Mercurial > vim
annotate src/crypt.c @ 27496:cd5a89c0e571
Added tag v8.2.4275 for changeset b98c20b53a2d622a24d3a5168c3968e51ffab915
author | Bram Moolenaar <Bram@vim.org> |
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date | Mon, 31 Jan 2022 18:30:04 +0100 |
parents | e1cedf009920 |
children | a077948be0f4 |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
6122 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 | |
10 /* | |
11 * crypt.c: Generic encryption support. | |
12 */ | |
13 #include "vim.h" | |
14 | |
15 #if defined(FEAT_CRYPT) || defined(PROTO) | |
16 /* | |
17 * Optional encryption support. | |
18 * Mohsin Ahmed, mosh@sasi.com, 1998-09-24 | |
19 * Based on zip/crypt sources. | |
20 * Refactored by David Leadbeater, 2014. | |
21 * | |
22 * NOTE FOR USA: Since 2000 exporting this code from the USA is allowed to | |
23 * most countries. There are a few exceptions, but that still should not be a | |
24 * problem since this code was originally created in Europe and India. | |
25 * | |
26 * Blowfish addition originally made by Mohsin Ahmed, | |
27 * http://www.cs.albany.edu/~mosh 2010-03-14 | |
28 * Based on blowfish by Bruce Schneier (http://www.schneier.com/blowfish.html) | |
29 * and sha256 by Christophe Devine. | |
30 */ | |
31 | |
32 typedef struct { | |
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33 char *name; // encryption name as used in 'cryptmethod' |
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34 char *magic; // magic bytes stored in file header |
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35 int salt_len; // length of salt, or 0 when not using salt |
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36 int seed_len; // length of seed, or 0 when not using seed |
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37 #ifdef CRYPT_NOT_INPLACE |
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38 int works_inplace; // encryption/decryption can be done in-place |
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39 #endif |
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40 int whole_undofile; // whole undo file is encrypted |
6122 | 41 |
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42 // Optional function pointer for a self-test. |
6122 | 43 int (* self_test_fn)(); |
44 | |
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45 // Function pointer for initializing encryption/decryption. |
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46 int (* init_fn)(cryptstate_T *state, char_u *key, |
6122 | 47 char_u *salt, int salt_len, char_u *seed, int seed_len); |
48 | |
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49 // Function pointers for encoding/decoding from one buffer into another. |
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50 // Optional, however, these or the _buffer ones should be configured. |
6122 | 51 void (*encode_fn)(cryptstate_T *state, char_u *from, size_t len, |
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52 char_u *to, int last); |
6122 | 53 void (*decode_fn)(cryptstate_T *state, char_u *from, size_t len, |
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54 char_u *to, int last); |
6122 | 55 |
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56 // Function pointers for encoding and decoding, can buffer data if needed. |
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57 // Optional (however, these or the above should be configured). |
6122 | 58 long (*encode_buffer_fn)(cryptstate_T *state, char_u *from, size_t len, |
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59 char_u **newptr, int last); |
6122 | 60 long (*decode_buffer_fn)(cryptstate_T *state, char_u *from, size_t len, |
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61 char_u **newptr, int last); |
6122 | 62 |
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63 // Function pointers for in-place encoding and decoding, used for |
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64 // crypt_*_inplace(). "from" and "to" arguments will be equal. |
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65 // These may be the same as decode_fn and encode_fn above, however an |
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66 // algorithm may implement them in a way that is not interchangeable with |
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67 // the crypt_(en|de)code() interface (for example because it wishes to add |
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68 // padding to files). |
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69 // This method is used for swap and undo files which have a rigid format. |
6122 | 70 void (*encode_inplace_fn)(cryptstate_T *state, char_u *p1, size_t len, |
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71 char_u *p2, int last); |
6122 | 72 void (*decode_inplace_fn)(cryptstate_T *state, char_u *p1, size_t len, |
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73 char_u *p2, int last); |
6122 | 74 } cryptmethod_T; |
75 | |
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76 // index is method_nr of cryptstate_T, CRYPT_M_* |
6122 | 77 static cryptmethod_T cryptmethods[CRYPT_M_COUNT] = { |
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78 // PK_Zip; very weak |
6122 | 79 { |
80 "zip", | |
81 "VimCrypt~01!", | |
82 0, | |
83 0, | |
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84 #ifdef CRYPT_NOT_INPLACE |
6122 | 85 TRUE, |
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86 #endif |
6122 | 87 FALSE, |
88 NULL, | |
89 crypt_zip_init, | |
90 crypt_zip_encode, crypt_zip_decode, | |
91 NULL, NULL, | |
92 crypt_zip_encode, crypt_zip_decode, | |
93 }, | |
94 | |
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95 // Blowfish/CFB + SHA-256 custom key derivation; implementation issues. |
6122 | 96 { |
97 "blowfish", | |
98 "VimCrypt~02!", | |
99 8, | |
100 8, | |
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101 #ifdef CRYPT_NOT_INPLACE |
6122 | 102 TRUE, |
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103 #endif |
6122 | 104 FALSE, |
105 blowfish_self_test, | |
106 crypt_blowfish_init, | |
107 crypt_blowfish_encode, crypt_blowfish_decode, | |
108 NULL, NULL, | |
109 crypt_blowfish_encode, crypt_blowfish_decode, | |
110 }, | |
111 | |
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112 // Blowfish/CFB + SHA-256 custom key derivation; fixed. |
6122 | 113 { |
114 "blowfish2", | |
115 "VimCrypt~03!", | |
116 8, | |
117 8, | |
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118 #ifdef CRYPT_NOT_INPLACE |
6122 | 119 TRUE, |
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120 #endif |
6122 | 121 TRUE, |
122 blowfish_self_test, | |
123 crypt_blowfish_init, | |
124 crypt_blowfish_encode, crypt_blowfish_decode, | |
125 NULL, NULL, | |
126 crypt_blowfish_encode, crypt_blowfish_decode, | |
127 }, | |
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128 |
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129 // XChaCha20 using libsodium |
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130 { |
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131 "xchacha20", |
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132 "VimCrypt~04!", |
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133 #ifdef FEAT_SODIUM |
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134 crypto_pwhash_argon2id_SALTBYTES, // 16 |
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135 #else |
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136 16, |
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137 #endif |
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138 8, |
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139 #ifdef CRYPT_NOT_INPLACE |
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140 FALSE, |
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141 #endif |
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142 FALSE, |
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143 NULL, |
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144 crypt_sodium_init, |
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145 NULL, NULL, |
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146 crypt_sodium_buffer_encode, crypt_sodium_buffer_decode, |
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147 NULL, NULL, |
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148 }, |
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149 |
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150 // NOTE: when adding a new method, use some random bytes for the magic key, |
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151 // to avoid that a text file is recognized as encrypted. |
6122 | 152 }; |
153 | |
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154 #ifdef FEAT_SODIUM |
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155 typedef struct { |
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156 size_t count; |
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157 unsigned char key[crypto_box_SEEDBYTES]; |
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158 // 32, same as crypto_secretstream_xchacha20poly1305_KEYBYTES |
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159 crypto_secretstream_xchacha20poly1305_state |
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160 state; |
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161 } sodium_state_T; |
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162 |
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163 |
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164 # ifdef DYNAMIC_SODIUM |
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165 # define sodium_init load_sodium |
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166 # define sodium_free dll_sodium_free |
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167 # define sodium_malloc dll_sodium_malloc |
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168 # define sodium_memzero dll_sodium_memzero |
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169 # define sodium_mlock dll_sodium_mlock |
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170 # define sodium_munlock dll_sodium_munlock |
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171 # define crypto_secretstream_xchacha20poly1305_init_push \ |
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172 dll_crypto_secretstream_xchacha20poly1305_init_push |
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173 # define crypto_secretstream_xchacha20poly1305_push \ |
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174 dll_crypto_secretstream_xchacha20poly1305_push |
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175 # define crypto_secretstream_xchacha20poly1305_init_pull \ |
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176 dll_crypto_secretstream_xchacha20poly1305_init_pull |
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177 # define crypto_secretstream_xchacha20poly1305_pull \ |
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178 dll_crypto_secretstream_xchacha20poly1305_pull |
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179 # define crypto_pwhash dll_crypto_pwhash |
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180 # define randombytes_buf dll_randombytes_buf |
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181 |
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182 static int (*dll_sodium_init)(void) = NULL; |
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183 static void (*dll_sodium_free)(void *) = NULL; |
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184 static void *(*dll_sodium_malloc)(const size_t) = NULL; |
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185 static void (*dll_sodium_memzero)(void * const, const size_t) = NULL; |
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186 static int (*dll_sodium_mlock)(void * const, const size_t) = NULL; |
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187 static int (*dll_sodium_munlock)(void * const, const size_t) = NULL; |
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188 static int (*dll_crypto_secretstream_xchacha20poly1305_init_push) |
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189 (crypto_secretstream_xchacha20poly1305_state *state, |
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190 unsigned char [], |
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191 const unsigned char []) = NULL; |
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192 static int (*dll_crypto_secretstream_xchacha20poly1305_push) |
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193 (crypto_secretstream_xchacha20poly1305_state *state, |
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194 unsigned char *c, unsigned long long *clen_p, |
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195 const unsigned char *m, unsigned long long mlen, |
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196 const unsigned char *ad, unsigned long long adlen, unsigned char tag) |
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197 = NULL; |
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198 static int (*dll_crypto_secretstream_xchacha20poly1305_init_pull) |
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199 (crypto_secretstream_xchacha20poly1305_state *state, |
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200 const unsigned char [], |
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201 const unsigned char []) = NULL; |
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202 static int (*dll_crypto_secretstream_xchacha20poly1305_pull) |
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203 (crypto_secretstream_xchacha20poly1305_state *state, |
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204 unsigned char *m, unsigned long long *mlen_p, unsigned char *tag_p, |
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205 const unsigned char *c, unsigned long long clen, |
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206 const unsigned char *ad, unsigned long long adlen) = NULL; |
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207 static int (*dll_crypto_pwhash)(unsigned char * const out, |
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208 unsigned long long outlen, |
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209 const char * const passwd, unsigned long long passwdlen, |
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210 const unsigned char * const salt, |
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211 unsigned long long opslimit, size_t memlimit, int alg) |
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212 = NULL; |
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213 static void (*dll_randombytes_buf)(void * const buf, const size_t size); |
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214 |
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215 static struct { |
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216 const char *name; |
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217 FARPROC *ptr; |
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218 } sodium_funcname_table[] = { |
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219 {"sodium_init", (FARPROC*)&dll_sodium_init}, |
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220 {"sodium_free", (FARPROC*)&dll_sodium_free}, |
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221 {"sodium_malloc", (FARPROC*)&dll_sodium_malloc}, |
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222 {"sodium_memzero", (FARPROC*)&dll_sodium_memzero}, |
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223 {"sodium_mlock", (FARPROC*)&dll_sodium_mlock}, |
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224 {"sodium_munlock", (FARPROC*)&dll_sodium_munlock}, |
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225 {"crypto_secretstream_xchacha20poly1305_init_push", (FARPROC*)&dll_crypto_secretstream_xchacha20poly1305_init_push}, |
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226 {"crypto_secretstream_xchacha20poly1305_push", (FARPROC*)&dll_crypto_secretstream_xchacha20poly1305_push}, |
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227 {"crypto_secretstream_xchacha20poly1305_init_pull", (FARPROC*)&dll_crypto_secretstream_xchacha20poly1305_init_pull}, |
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228 {"crypto_secretstream_xchacha20poly1305_pull", (FARPROC*)&dll_crypto_secretstream_xchacha20poly1305_pull}, |
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229 {"crypto_pwhash", (FARPROC*)&dll_crypto_pwhash}, |
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230 {"randombytes_buf", (FARPROC*)&dll_randombytes_buf}, |
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231 {NULL, NULL} |
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232 }; |
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233 |
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234 static int |
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235 load_sodium(void) |
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236 { |
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237 static HANDLE hsodium = NULL; |
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238 int i; |
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239 |
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240 if (hsodium != NULL) |
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241 return 0; |
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242 |
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243 hsodium = vimLoadLib("libsodium.dll"); |
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244 if (hsodium == NULL) |
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245 { |
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246 // TODO: Show error message. |
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247 return -1; |
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248 } |
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249 |
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250 for (i = 0; sodium_funcname_table[i].ptr; ++i) |
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251 { |
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252 if ((*sodium_funcname_table[i].ptr = GetProcAddress(hsodium, |
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253 sodium_funcname_table[i].name)) == NULL) |
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254 { |
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255 FreeLibrary(hsodium); |
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256 hsodium = NULL; |
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257 // TODO: Show error message. |
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258 return -1; |
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259 } |
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260 } |
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261 return dll_sodium_init(); |
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262 } |
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263 # endif |
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264 #endif |
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265 |
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266 #define CRYPT_MAGIC_LEN 12 // cannot change |
6122 | 267 static char crypt_magic_head[] = "VimCrypt~"; |
268 | |
269 /* | |
270 * Return int value for crypt method name. | |
271 * 0 for "zip", the old method. Also for any non-valid value. | |
272 * 1 for "blowfish". | |
273 * 2 for "blowfish2". | |
274 */ | |
275 int | |
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276 crypt_method_nr_from_name(char_u *name) |
6122 | 277 { |
278 int i; | |
279 | |
280 for (i = 0; i < CRYPT_M_COUNT; ++i) | |
281 if (STRCMP(name, cryptmethods[i].name) == 0) | |
282 return i; | |
283 return 0; | |
284 } | |
285 | |
286 /* | |
287 * Get the crypt method used for a file from "ptr[len]", the magic text at the | |
288 * start of the file. | |
289 * Returns -1 when no encryption used. | |
290 */ | |
291 int | |
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292 crypt_method_nr_from_magic(char *ptr, int len) |
6122 | 293 { |
294 int i; | |
295 | |
296 if (len < CRYPT_MAGIC_LEN) | |
297 return -1; | |
298 | |
299 for (i = 0; i < CRYPT_M_COUNT; i++) | |
300 if (memcmp(ptr, cryptmethods[i].magic, CRYPT_MAGIC_LEN) == 0) | |
301 return i; | |
302 | |
303 i = (int)STRLEN(crypt_magic_head); | |
304 if (len >= i && memcmp(ptr, crypt_magic_head, i) == 0) | |
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305 emsg(_(e_file_is_encrypted_with_unknown_method)); |
6122 | 306 |
307 return -1; | |
308 } | |
309 | |
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310 #ifdef CRYPT_NOT_INPLACE |
6122 | 311 /* |
312 * Return TRUE if the crypt method for "method_nr" can be done in-place. | |
313 */ | |
314 int | |
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315 crypt_works_inplace(cryptstate_T *state) |
6122 | 316 { |
317 return cryptmethods[state->method_nr].works_inplace; | |
318 } | |
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319 #endif |
6122 | 320 |
321 /* | |
322 * Get the crypt method for buffer "buf" as a number. | |
323 */ | |
324 int | |
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325 crypt_get_method_nr(buf_T *buf) |
6122 | 326 { |
327 return crypt_method_nr_from_name(*buf->b_p_cm == NUL ? p_cm : buf->b_p_cm); | |
328 } | |
329 | |
330 /* | |
331 * Return TRUE when the buffer uses an encryption method that encrypts the | |
332 * whole undo file, not only the text. | |
333 */ | |
334 int | |
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335 crypt_whole_undofile(int method_nr) |
6122 | 336 { |
337 return cryptmethods[method_nr].whole_undofile; | |
338 } | |
339 | |
340 /* | |
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341 * Get crypt method specific length of the file header in bytes. |
6122 | 342 */ |
343 int | |
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344 crypt_get_header_len(int method_nr) |
6122 | 345 { |
346 return CRYPT_MAGIC_LEN | |
347 + cryptmethods[method_nr].salt_len | |
348 + cryptmethods[method_nr].seed_len; | |
349 } | |
350 | |
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351 |
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352 #if defined(FEAT_SODIUM) || defined(PROTO) |
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353 /* |
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354 * Get maximum crypt method specific length of the file header in bytes. |
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355 */ |
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356 int |
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357 crypt_get_max_header_len() |
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358 { |
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359 int i; |
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360 int max = 0; |
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361 int temp = 0; |
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362 |
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363 for (i = 0; i < CRYPT_M_COUNT; ++i) |
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364 { |
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365 temp = crypt_get_header_len(i); |
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366 if (temp > max) |
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367 max = temp; |
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368 } |
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369 return max; |
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370 } |
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371 #endif |
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372 |
6122 | 373 /* |
374 * Set the crypt method for buffer "buf" to "method_nr" using the int value as | |
375 * returned by crypt_method_nr_from_name(). | |
376 */ | |
377 void | |
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378 crypt_set_cm_option(buf_T *buf, int method_nr) |
6122 | 379 { |
380 free_string_option(buf->b_p_cm); | |
381 buf->b_p_cm = vim_strsave((char_u *)cryptmethods[method_nr].name); | |
382 } | |
383 | |
384 /* | |
385 * If the crypt method for the current buffer has a self-test, run it and | |
386 * return OK/FAIL. | |
387 */ | |
388 int | |
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389 crypt_self_test(void) |
6122 | 390 { |
391 int method_nr = crypt_get_method_nr(curbuf); | |
392 | |
393 if (cryptmethods[method_nr].self_test_fn == NULL) | |
394 return OK; | |
395 return cryptmethods[method_nr].self_test_fn(); | |
396 } | |
397 | |
398 /* | |
399 * Allocate a crypt state and initialize it. | |
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400 * Return NULL for failure. |
6122 | 401 */ |
402 cryptstate_T * | |
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403 crypt_create( |
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404 int method_nr, |
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405 char_u *key, |
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406 char_u *salt, |
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407 int salt_len, |
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408 char_u *seed, |
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409 int seed_len) |
6122 | 410 { |
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411 cryptstate_T *state = ALLOC_ONE(cryptstate_T); |
6122 | 412 |
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413 if (state == NULL) |
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414 return state; |
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415 |
6122 | 416 state->method_nr = method_nr; |
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417 if (cryptmethods[method_nr].init_fn( |
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418 state, key, salt, salt_len, seed, seed_len) == FAIL) |
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419 { |
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420 vim_free(state); |
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421 return NULL; |
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422 } |
6122 | 423 return state; |
424 } | |
425 | |
426 /* | |
427 * Allocate a crypt state from a file header and initialize it. | |
428 * Assumes that header contains at least the number of bytes that | |
429 * crypt_get_header_len() returns for "method_nr". | |
430 */ | |
431 cryptstate_T * | |
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432 crypt_create_from_header( |
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433 int method_nr, |
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434 char_u *key, |
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435 char_u *header) |
6122 | 436 { |
437 char_u *salt = NULL; | |
438 char_u *seed = NULL; | |
439 int salt_len = cryptmethods[method_nr].salt_len; | |
440 int seed_len = cryptmethods[method_nr].seed_len; | |
441 | |
442 if (salt_len > 0) | |
443 salt = header + CRYPT_MAGIC_LEN; | |
444 if (seed_len > 0) | |
445 seed = header + CRYPT_MAGIC_LEN + salt_len; | |
446 | |
447 return crypt_create(method_nr, key, salt, salt_len, seed, seed_len); | |
448 } | |
449 | |
450 /* | |
451 * Read the crypt method specific header data from "fp". | |
452 * Return an allocated cryptstate_T or NULL on error. | |
453 */ | |
454 cryptstate_T * | |
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455 crypt_create_from_file(FILE *fp, char_u *key) |
6122 | 456 { |
457 int method_nr; | |
458 int header_len; | |
459 char magic_buffer[CRYPT_MAGIC_LEN]; | |
460 char_u *buffer; | |
461 cryptstate_T *state; | |
462 | |
463 if (fread(magic_buffer, CRYPT_MAGIC_LEN, 1, fp) != 1) | |
464 return NULL; | |
465 method_nr = crypt_method_nr_from_magic(magic_buffer, CRYPT_MAGIC_LEN); | |
466 if (method_nr < 0) | |
467 return NULL; | |
468 | |
469 header_len = crypt_get_header_len(method_nr); | |
470 if ((buffer = alloc(header_len)) == NULL) | |
471 return NULL; | |
472 mch_memmove(buffer, magic_buffer, CRYPT_MAGIC_LEN); | |
473 if (header_len > CRYPT_MAGIC_LEN | |
474 && fread(buffer + CRYPT_MAGIC_LEN, | |
475 header_len - CRYPT_MAGIC_LEN, 1, fp) != 1) | |
476 { | |
477 vim_free(buffer); | |
478 return NULL; | |
479 } | |
480 | |
481 state = crypt_create_from_header(method_nr, key, buffer); | |
482 vim_free(buffer); | |
483 return state; | |
484 } | |
485 | |
486 /* | |
487 * Allocate a cryptstate_T for writing and initialize it with "key". | |
488 * Allocates and fills in the header and stores it in "header", setting | |
489 * "header_len". The header may include salt and seed, depending on | |
490 * cryptmethod. Caller must free header. | |
491 * Returns the state or NULL on failure. | |
492 */ | |
493 cryptstate_T * | |
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494 crypt_create_for_writing( |
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495 int method_nr, |
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496 char_u *key, |
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497 char_u **header, |
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498 int *header_len) |
6122 | 499 { |
500 int len = crypt_get_header_len(method_nr); | |
501 char_u *salt = NULL; | |
502 char_u *seed = NULL; | |
503 int salt_len = cryptmethods[method_nr].salt_len; | |
504 int seed_len = cryptmethods[method_nr].seed_len; | |
505 cryptstate_T *state; | |
506 | |
507 *header_len = len; | |
508 *header = alloc(len); | |
509 if (*header == NULL) | |
510 return NULL; | |
511 | |
512 mch_memmove(*header, cryptmethods[method_nr].magic, CRYPT_MAGIC_LEN); | |
513 if (salt_len > 0 || seed_len > 0) | |
514 { | |
515 if (salt_len > 0) | |
516 salt = *header + CRYPT_MAGIC_LEN; | |
517 if (seed_len > 0) | |
518 seed = *header + CRYPT_MAGIC_LEN + salt_len; | |
519 | |
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520 // TODO: Should this be crypt method specific? (Probably not worth |
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521 // it). sha2_seed is pretty bad for large amounts of entropy, so make |
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522 // that into something which is suitable for anything. |
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523 #ifdef FEAT_SODIUM |
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524 if (sodium_init() >= 0) |
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525 { |
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526 if (salt_len > 0) |
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527 randombytes_buf(salt, salt_len); |
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528 if (seed_len > 0) |
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529 randombytes_buf(seed, seed_len); |
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530 } |
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531 else |
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532 #endif |
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533 sha2_seed(salt, salt_len, seed, seed_len); |
6122 | 534 } |
535 state = crypt_create(method_nr, key, salt, salt_len, seed, seed_len); | |
536 if (state == NULL) | |
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537 VIM_CLEAR(*header); |
6122 | 538 return state; |
539 } | |
540 | |
541 /* | |
542 * Free the crypt state. | |
543 */ | |
544 void | |
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545 crypt_free_state(cryptstate_T *state) |
6122 | 546 { |
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547 #ifdef FEAT_SODIUM |
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548 if (state->method_nr == CRYPT_M_SOD) |
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549 { |
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550 sodium_munlock(((sodium_state_T *)state->method_state)->key, |
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551 crypto_box_SEEDBYTES); |
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552 sodium_memzero(state->method_state, sizeof(sodium_state_T)); |
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553 sodium_free(state->method_state); |
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554 } |
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555 else |
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556 #endif |
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557 vim_free(state->method_state); |
6122 | 558 vim_free(state); |
559 } | |
560 | |
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561 #ifdef CRYPT_NOT_INPLACE |
6122 | 562 /* |
563 * Encode "from[len]" and store the result in a newly allocated buffer, which | |
564 * is stored in "newptr". | |
565 * Return number of bytes in "newptr", 0 for need more or -1 on error. | |
566 */ | |
567 long | |
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568 crypt_encode_alloc( |
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569 cryptstate_T *state, |
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570 char_u *from, |
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571 size_t len, |
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572 char_u **newptr, |
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573 int last) |
6122 | 574 { |
575 cryptmethod_T *method = &cryptmethods[state->method_nr]; | |
576 | |
577 if (method->encode_buffer_fn != NULL) | |
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578 // Has buffer function, pass through. |
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579 return method->encode_buffer_fn(state, from, len, newptr, last); |
6122 | 580 if (len == 0) |
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581 // Not buffering, just return EOF. |
6132 | 582 return (long)len; |
6122 | 583 |
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584 *newptr = alloc(len + 50); |
6122 | 585 if (*newptr == NULL) |
586 return -1; | |
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587 method->encode_fn(state, from, len, *newptr, last); |
6132 | 588 return (long)len; |
6122 | 589 } |
590 | |
591 /* | |
592 * Decrypt "ptr[len]" and store the result in a newly allocated buffer, which | |
593 * is stored in "newptr". | |
594 * Return number of bytes in "newptr", 0 for need more or -1 on error. | |
595 */ | |
596 long | |
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597 crypt_decode_alloc( |
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598 cryptstate_T *state, |
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599 char_u *ptr, |
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600 long len, |
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601 char_u **newptr, |
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602 int last) |
6122 | 603 { |
604 cryptmethod_T *method = &cryptmethods[state->method_nr]; | |
605 | |
606 if (method->decode_buffer_fn != NULL) | |
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607 // Has buffer function, pass through. |
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608 return method->decode_buffer_fn(state, ptr, len, newptr, last); |
6122 | 609 |
610 if (len == 0) | |
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611 // Not buffering, just return EOF. |
6122 | 612 return len; |
613 | |
614 *newptr = alloc(len); | |
615 if (*newptr == NULL) | |
616 return -1; | |
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617 method->decode_fn(state, ptr, len, *newptr, last); |
6122 | 618 return len; |
619 } | |
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620 #endif |
6122 | 621 |
622 /* | |
623 * Encrypting "from[len]" into "to[len]". | |
624 */ | |
625 void | |
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626 crypt_encode( |
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627 cryptstate_T *state, |
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628 char_u *from, |
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629 size_t len, |
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630 char_u *to, |
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631 int last) |
6122 | 632 { |
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633 cryptmethods[state->method_nr].encode_fn(state, from, len, to, last); |
6122 | 634 } |
635 | |
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636 #if 0 // unused |
6122 | 637 /* |
638 * decrypting "from[len]" into "to[len]". | |
639 */ | |
640 void | |
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641 crypt_decode( |
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642 cryptstate_T *state, |
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643 char_u *from, |
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644 size_t len, |
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645 char_u *to, |
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646 int last) |
6122 | 647 { |
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648 cryptmethods[state->method_nr].decode_fn(state, from, len, to, last); |
6122 | 649 } |
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650 #endif |
6122 | 651 |
652 /* | |
653 * Simple inplace encryption, modifies "buf[len]" in place. | |
654 */ | |
655 void | |
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656 crypt_encode_inplace( |
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657 cryptstate_T *state, |
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658 char_u *buf, |
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659 size_t len, |
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660 int last) |
6122 | 661 { |
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662 cryptmethods[state->method_nr].encode_inplace_fn(state, buf, len, |
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663 buf, last); |
6122 | 664 } |
665 | |
666 /* | |
667 * Simple inplace decryption, modifies "buf[len]" in place. | |
668 */ | |
669 void | |
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670 crypt_decode_inplace( |
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671 cryptstate_T *state, |
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672 char_u *buf, |
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673 size_t len, |
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674 int last) |
6122 | 675 { |
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676 cryptmethods[state->method_nr].decode_inplace_fn(state, buf, len, |
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677 buf, last); |
6122 | 678 } |
679 | |
680 /* | |
681 * Free an allocated crypt key. Clear the text to make sure it doesn't stay | |
682 * in memory anywhere. | |
683 */ | |
684 void | |
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685 crypt_free_key(char_u *key) |
6122 | 686 { |
687 char_u *p; | |
688 | |
689 if (key != NULL) | |
690 { | |
691 for (p = key; *p != NUL; ++p) | |
692 *p = 0; | |
693 vim_free(key); | |
694 } | |
695 } | |
696 | |
697 /* | |
6353 | 698 * Check the crypt method and give a warning if it's outdated. |
699 */ | |
700 void | |
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701 crypt_check_method(int method) |
6353 | 702 { |
703 if (method < CRYPT_M_BF2) | |
704 { | |
705 msg_scroll = TRUE; | |
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706 msg(_("Warning: Using a weak encryption method; see :help 'cm'")); |
6353 | 707 } |
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708 } |
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709 |
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710 #ifdef FEAT_SODIUM |
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711 static void |
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712 crypt_check_swapfile_curbuf(void) |
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713 { |
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714 int method = crypt_get_method_nr(curbuf); |
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715 if (method == CRYPT_M_SOD) |
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716 { |
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717 // encryption uses padding and MAC, that does not work very well with |
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718 // swap and undo files, so disable them |
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719 mf_close_file(curbuf, TRUE); // remove the swap file |
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720 set_option_value((char_u *)"swf", 0, NULL, OPT_LOCAL); |
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721 msg_scroll = TRUE; |
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722 msg(_("Note: Encryption of swapfile not supported, disabling swap file")); |
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723 } |
6353 | 724 } |
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725 #endif |
6353 | 726 |
727 void | |
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728 crypt_check_current_method(void) |
6353 | 729 { |
730 crypt_check_method(crypt_get_method_nr(curbuf)); | |
731 } | |
732 | |
733 /* | |
6122 | 734 * Ask the user for a crypt key. |
735 * When "store" is TRUE, the new key is stored in the 'key' option, and the | |
736 * 'key' option value is returned: Don't free it. | |
737 * When "store" is FALSE, the typed key is returned in allocated memory. | |
738 * Returns NULL on failure. | |
739 */ | |
740 char_u * | |
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741 crypt_get_key( |
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742 int store, |
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743 int twice) // Ask for the key twice. |
6122 | 744 { |
745 char_u *p1, *p2 = NULL; | |
746 int round; | |
747 | |
748 for (round = 0; ; ++round) | |
749 { | |
750 cmdline_star = TRUE; | |
751 cmdline_row = msg_row; | |
752 p1 = getcmdline_prompt(NUL, round == 0 | |
753 ? (char_u *)_("Enter encryption key: ") | |
754 : (char_u *)_("Enter same key again: "), 0, EXPAND_NOTHING, | |
755 NULL); | |
756 cmdline_star = FALSE; | |
757 | |
758 if (p1 == NULL) | |
759 break; | |
760 | |
761 if (round == twice) | |
762 { | |
763 if (p2 != NULL && STRCMP(p1, p2) != 0) | |
764 { | |
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765 msg(_("Keys don't match!")); |
6122 | 766 crypt_free_key(p1); |
767 crypt_free_key(p2); | |
768 p2 = NULL; | |
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769 round = -1; // do it again |
6122 | 770 continue; |
771 } | |
772 | |
773 if (store) | |
774 { | |
775 set_option_value((char_u *)"key", 0L, p1, OPT_LOCAL); | |
776 crypt_free_key(p1); | |
777 p1 = curbuf->b_p_key; | |
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778 #ifdef FEAT_SODIUM |
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779 crypt_check_swapfile_curbuf(); |
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780 #endif |
6122 | 781 } |
782 break; | |
783 } | |
784 p2 = p1; | |
785 } | |
786 | |
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|
787 // since the user typed this, no need to wait for return |
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|
788 if (crypt_get_method_nr(curbuf) != CRYPT_M_SOD) |
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|
789 { |
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patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
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|
790 if (msg_didout) |
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patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
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changeset
|
791 msg_putchar('\n'); |
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
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diff
changeset
|
792 need_wait_return = FALSE; |
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
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|
793 msg_didout = FALSE; |
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
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|
794 } |
6122 | 795 |
796 crypt_free_key(p2); | |
797 return p1; | |
798 } | |
799 | |
800 | |
801 /* | |
802 * Append a message to IObuff for the encryption/decryption method being used. | |
803 */ | |
804 void | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
805 crypt_append_msg( |
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
806 buf_T *buf) |
6122 | 807 { |
808 if (crypt_get_method_nr(buf) == 0) | |
809 STRCAT(IObuff, _("[crypted]")); | |
810 else | |
811 { | |
812 STRCAT(IObuff, "["); | |
813 STRCAT(IObuff, *buf->b_p_cm == NUL ? p_cm : buf->b_p_cm); | |
814 STRCAT(IObuff, "]"); | |
815 } | |
816 } | |
817 | |
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patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
818 int |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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changeset
|
819 crypt_sodium_init( |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
820 cryptstate_T *state UNUSED, |
7e9e53a0368f
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diff
changeset
|
821 char_u *key UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
822 char_u *salt UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
823 int salt_len UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
824 char_u *seed UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
825 int seed_len UNUSED) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
826 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
827 # ifdef FEAT_SODIUM |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
828 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
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patch 8.2.3022: available encryption methods are not strong enough
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changeset
|
829 unsigned char dkey[crypto_box_SEEDBYTES]; // 32 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
830 sodium_state_T *sd_state; |
25417
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
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diff
changeset
|
831 int retval = 0; |
24970
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patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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|
832 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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changeset
|
833 if (sodium_init() < 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
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|
834 return FAIL; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
835 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
836 sd_state = (sodium_state_T *)sodium_malloc(sizeof(sodium_state_T)); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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changeset
|
837 sodium_memzero(sd_state, sizeof(sodium_state_T)); |
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patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
838 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
839 // derive a key from the password |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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changeset
|
840 if (crypto_pwhash(dkey, sizeof(dkey), (const char *)key, STRLEN(key), salt, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
841 crypto_pwhash_OPSLIMIT_INTERACTIVE, crypto_pwhash_MEMLIMIT_INTERACTIVE, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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changeset
|
842 crypto_pwhash_ALG_DEFAULT) != 0) |
7e9e53a0368f
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changeset
|
843 { |
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patch 8.2.3022: available encryption methods are not strong enough
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changeset
|
844 // out of memory |
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patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
845 sodium_free(sd_state); |
7e9e53a0368f
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diff
changeset
|
846 return FAIL; |
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patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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|
847 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
848 memcpy(sd_state->key, dkey, crypto_box_SEEDBYTES); |
25417
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patch 8.2.3245: the crypt key may appear in a swap partition
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|
849 |
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diff
changeset
|
850 retval += sodium_mlock(sd_state->key, crypto_box_SEEDBYTES); |
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patch 8.2.3245: the crypt key may appear in a swap partition
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changeset
|
851 retval += sodium_mlock(key, STRLEN(key)); |
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patch 8.2.3245: the crypt key may appear in a swap partition
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|
852 |
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
853 if (retval < 0) |
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
854 { |
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
855 emsg(_(e_encryption_sodium_mlock_failed)); |
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
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diff
changeset
|
856 sodium_free(sd_state); |
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
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parents:
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|
857 return FAIL; |
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
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|
858 } |
24970
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|
859 sd_state->count = 0; |
7e9e53a0368f
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diff
changeset
|
860 state->method_state = sd_state; |
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|
861 |
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|
862 return OK; |
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|
863 # else |
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patch 8.2.3022: available encryption methods are not strong enough
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|
864 emsg(e_libsodium_not_built_in); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
865 return FAIL; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
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|
866 # endif |
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|
867 } |
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patch 8.2.3022: available encryption methods are not strong enough
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|
868 |
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
869 /* |
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patch 8.2.3022: available encryption methods are not strong enough
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|
870 * Encrypt "from[len]" into "to[len]". |
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patch 8.2.3022: available encryption methods are not strong enough
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changeset
|
871 * "from" and "to" can be equal to encrypt in place. |
7e9e53a0368f
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diff
changeset
|
872 * Call needs to ensure that there is enough space in to (for the header) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
873 */ |
24990
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patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
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diff
changeset
|
874 #if 0 // Currently unused |
24970
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changeset
|
875 void |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
876 crypt_sodium_encode( |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
877 cryptstate_T *state UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
878 char_u *from UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
879 size_t len UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
880 char_u *to UNUSED, |
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patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
881 int last UNUSED) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
882 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
883 # ifdef FEAT_SODIUM |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
884 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
885 sodium_state_T *sod_st = state->method_state; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
886 unsigned char tag = last |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
887 ? crypto_secretstream_xchacha20poly1305_TAG_FINAL : 0; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
888 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
889 if (sod_st->count == 0) |
7e9e53a0368f
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changeset
|
890 { |
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patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
891 if (len <= crypto_secretstream_xchacha20poly1305_HEADERBYTES) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
892 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
893 emsg(e_libsodium_cannot_encrypt_header); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
894 return; |
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changeset
|
895 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
896 crypto_secretstream_xchacha20poly1305_init_push(&sod_st->state, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
897 to, sod_st->key); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
898 to += crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
899 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
900 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
901 if (sod_st->count && len <= crypto_secretstream_xchacha20poly1305_ABYTES) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
902 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
903 emsg(e_libsodium_cannot_encrypt_buffer); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
904 return; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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diff
changeset
|
905 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
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parents:
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diff
changeset
|
906 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
907 crypto_secretstream_xchacha20poly1305_push(&sod_st->state, to, NULL, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
908 from, len, NULL, 0, tag); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
909 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
910 sod_st->count++; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
911 # endif |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
912 } |
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
913 #endif |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
914 |
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
915 /* |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
916 * Decrypt "from[len]" into "to[len]". |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
917 * "from" and "to" can be equal to encrypt in place. |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
918 */ |
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
919 #if 0 // Currently unused |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
920 void |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
921 crypt_sodium_decode( |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
922 cryptstate_T *state UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
923 char_u *from UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
924 size_t len UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
925 char_u *to UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
926 int last UNUSED) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
927 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
928 # ifdef FEAT_SODIUM |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
929 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
930 sodium_state_T *sod_st = state->method_state; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
931 unsigned char tag; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
932 unsigned long long buf_len; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
933 char_u *p1 = from; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
934 char_u *p2 = to; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
935 char_u *buf_out; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
936 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
937 if (sod_st->count == 0 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
938 && len <= crypto_secretstream_xchacha20poly1305_HEADERBYTES) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
939 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
940 emsg(e_libsodium_cannot_decrypt_header); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
941 return; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
942 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
943 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
944 buf_out = (char_u *)alloc(len); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
945 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
946 if (buf_out == NULL) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
947 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
948 emsg(e_libsodium_cannot_allocate_buffer); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
949 return; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
950 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
951 if (sod_st->count == 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
952 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
953 if (crypto_secretstream_xchacha20poly1305_init_pull( |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
954 &sod_st->state, from, sod_st->key) != 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
955 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
956 emsg(e_libsodium_decryption_failed_header_incomplete); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
957 goto fail; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
958 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
959 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
960 from += crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
961 len -= crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
962 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
963 if (p1 == p2) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
964 to += crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
965 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
966 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
967 if (sod_st->count && len <= crypto_secretstream_xchacha20poly1305_ABYTES) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
968 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
969 emsg(e_libsodium_cannot_decrypt_buffer); |
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
970 goto fail; |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
971 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
972 if (crypto_secretstream_xchacha20poly1305_pull(&sod_st->state, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
973 buf_out, &buf_len, &tag, from, len, NULL, 0) != 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
974 { |
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
975 emsg(e_libsodium_decryption_failed); |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
976 goto fail; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
977 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
978 sod_st->count++; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
979 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
980 if (tag == crypto_secretstream_xchacha20poly1305_TAG_FINAL && !last) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
981 { |
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
982 emsg(e_libsodium_decryption_failed_premature); |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
983 goto fail; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
984 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
985 if (p1 == p2) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
986 mch_memmove(p2, buf_out, buf_len); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
987 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
988 fail: |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
989 vim_free(buf_out); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
990 # endif |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
991 } |
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
992 #endif |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
993 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
994 /* |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
995 * Encrypt "from[len]" into "to[len]". |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
996 * "from" and "to" can be equal to encrypt in place. |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
997 */ |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
998 long |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
999 crypt_sodium_buffer_encode( |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1000 cryptstate_T *state UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1001 char_u *from UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1002 size_t len UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1003 char_u **buf_out UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1004 int last UNUSED) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1005 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1006 # ifdef FEAT_SODIUM |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1007 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1008 unsigned long long out_len; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1009 char_u *ptr; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1010 unsigned char tag = last |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1011 ? crypto_secretstream_xchacha20poly1305_TAG_FINAL : 0; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1012 int length; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1013 sodium_state_T *sod_st = state->method_state; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1014 int first = (sod_st->count == 0); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1015 |
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
1016 length = (int)len + crypto_secretstream_xchacha20poly1305_ABYTES |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1017 + (first ? crypto_secretstream_xchacha20poly1305_HEADERBYTES : 0); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1018 *buf_out = alloc_clear(length); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1019 if (*buf_out == NULL) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1020 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1021 emsg(e_libsodium_cannot_allocate_buffer); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1022 return -1; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1023 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1024 ptr = *buf_out; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1025 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1026 if (first) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1027 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
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|
1028 crypto_secretstream_xchacha20poly1305_init_push(&sod_st->state, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1029 ptr, sod_st->key); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1030 ptr += crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1031 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1032 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1033 crypto_secretstream_xchacha20poly1305_push(&sod_st->state, ptr, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1034 &out_len, from, len, NULL, 0, tag); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1035 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1036 sod_st->count++; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1037 return out_len + (first |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1038 ? crypto_secretstream_xchacha20poly1305_HEADERBYTES : 0); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1039 # else |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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|
1040 return -1; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1041 # endif |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1042 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1043 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1044 /* |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1045 * Decrypt "from[len]" into "to[len]". |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1046 * "from" and "to" can be equal to encrypt in place. |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1047 */ |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1048 long |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1049 crypt_sodium_buffer_decode( |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1050 cryptstate_T *state UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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|
1051 char_u *from UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1052 size_t len UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1053 char_u **buf_out UNUSED, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1054 int last UNUSED) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1055 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1056 # ifdef FEAT_SODIUM |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1057 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1058 sodium_state_T *sod_st = state->method_state; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1059 unsigned char tag; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1060 unsigned long long out_len; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1061 *buf_out = alloc_clear(len); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1062 if (*buf_out == NULL) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1063 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1064 emsg(e_libsodium_cannot_allocate_buffer); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1065 return -1; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1066 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1067 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1068 if (sod_st->count == 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1069 { |
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patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1070 if (crypto_secretstream_xchacha20poly1305_init_pull(&sod_st->state, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1071 from, sod_st->key) != 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1072 { |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1073 emsg(e_libsodium_decryption_failed_header_incomplete); |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1074 return -1; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
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|
1075 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1076 from += crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1077 len -= crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1078 sod_st->count++; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1079 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1080 if (crypto_secretstream_xchacha20poly1305_pull(&sod_st->state, |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1081 *buf_out, &out_len, &tag, from, len, NULL, 0) != 0) |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1082 { |
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
1083 emsg(e_libsodium_decryption_failed); |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1084 return -1; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1085 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1086 |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1087 if (tag == crypto_secretstream_xchacha20poly1305_TAG_FINAL && !last) |
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
1088 emsg(e_libsodium_decryption_failed_premature); |
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1089 return (long) out_len; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1090 # else |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1091 return -1; |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1092 # endif |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
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diff
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|
1093 } |
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1094 |
27231
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
27018
diff
changeset
|
1095 # if defined(FEAT_SODIUM) || defined(PROTO) |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1096 int |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1097 crypt_sodium_munlock(void *const addr, const size_t len) |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1098 { |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1099 return sodium_munlock(addr, len); |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1100 } |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1101 |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1102 void |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1103 crypt_sodium_randombytes_buf(void *const buf, const size_t size) |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1104 { |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1105 randombytes_buf(buf, size); |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1106 } |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1107 # endif |
e1cedf009920
patch 8.2.4144: cannot load libsodium dynamically
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1108 |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18498
diff
changeset
|
1109 #endif // FEAT_CRYPT |