Mercurial > vim
annotate src/crypt.c @ 27998:ef7d9789919d v8.2.4524
patch 8.2.4524: MS-Windows: cannot build with some sodium libraries
Commit: https://github.com/vim/vim/commit/d8f8629b1bf566e1dada7515e9b146c69e5d9757
Author: K.Takata <kentkt@csc.jp>
Date: Mon Mar 7 15:16:15 2022 +0000
patch 8.2.4524: MS-Windows: cannot build with some sodium libraries
Problem: MS-Windows: cannot build with some sodium libraries.
Solution: Make the DLL name configuragle. Add build instructions.
(Ken Takata, closes #9905)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Mon, 07 Mar 2022 16:30:04 +0100 |
| parents | a077948be0f4 |
| children | 4dcccb2673fe |
| rev | line source |
|---|---|
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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| 26 * Blowfish addition originally made by Mohsin Ahmed, | |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 # ifdef MSWIN |
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166 # define SODIUM_PROC FARPROC |
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167 # define load_dll vimLoadLib |
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168 # define symbol_from_dll GetProcAddress |
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169 # define close_dll FreeLibrary |
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170 # define load_dll_error GetWin32Error |
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171 # else |
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172 # error Dynamic loading of libsodium is not supported for now. |
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173 //# define HINSTANCE void* |
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174 //# define SODIUM_PROC void* |
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175 //# define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL) |
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176 //# define symbol_from_dll dlsym |
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177 //# define close_dll dlclose |
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178 //# define load_dll_error dlerror |
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179 # endif |
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180 |
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181 # define sodium_init load_sodium |
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182 # define sodium_free dll_sodium_free |
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183 # define sodium_malloc dll_sodium_malloc |
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184 # define sodium_memzero dll_sodium_memzero |
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185 # define sodium_mlock dll_sodium_mlock |
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186 # define sodium_munlock dll_sodium_munlock |
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187 # define crypto_secretstream_xchacha20poly1305_init_push \ |
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188 dll_crypto_secretstream_xchacha20poly1305_init_push |
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189 # define crypto_secretstream_xchacha20poly1305_push \ |
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190 dll_crypto_secretstream_xchacha20poly1305_push |
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191 # define crypto_secretstream_xchacha20poly1305_init_pull \ |
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192 dll_crypto_secretstream_xchacha20poly1305_init_pull |
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193 # define crypto_secretstream_xchacha20poly1305_pull \ |
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194 dll_crypto_secretstream_xchacha20poly1305_pull |
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195 # define crypto_pwhash dll_crypto_pwhash |
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196 # define randombytes_buf dll_randombytes_buf |
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197 |
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198 static int (*dll_sodium_init)(void) = NULL; |
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199 static void (*dll_sodium_free)(void *) = NULL; |
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200 static void *(*dll_sodium_malloc)(const size_t) = NULL; |
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201 static void (*dll_sodium_memzero)(void * const, const size_t) = NULL; |
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202 static int (*dll_sodium_mlock)(void * const, const size_t) = NULL; |
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203 static int (*dll_sodium_munlock)(void * const, const size_t) = NULL; |
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204 static int (*dll_crypto_secretstream_xchacha20poly1305_init_push) |
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205 (crypto_secretstream_xchacha20poly1305_state *state, |
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206 unsigned char [], |
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207 const unsigned char []) = NULL; |
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208 static int (*dll_crypto_secretstream_xchacha20poly1305_push) |
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209 (crypto_secretstream_xchacha20poly1305_state *state, |
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210 unsigned char *c, unsigned long long *clen_p, |
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211 const unsigned char *m, unsigned long long mlen, |
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212 const unsigned char *ad, unsigned long long adlen, unsigned char tag) |
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213 = NULL; |
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214 static int (*dll_crypto_secretstream_xchacha20poly1305_init_pull) |
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215 (crypto_secretstream_xchacha20poly1305_state *state, |
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216 const unsigned char [], |
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217 const unsigned char []) = NULL; |
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218 static int (*dll_crypto_secretstream_xchacha20poly1305_pull) |
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219 (crypto_secretstream_xchacha20poly1305_state *state, |
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220 unsigned char *m, unsigned long long *mlen_p, unsigned char *tag_p, |
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221 const unsigned char *c, unsigned long long clen, |
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222 const unsigned char *ad, unsigned long long adlen) = NULL; |
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223 static int (*dll_crypto_pwhash)(unsigned char * const out, |
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224 unsigned long long outlen, |
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225 const char * const passwd, unsigned long long passwdlen, |
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226 const unsigned char * const salt, |
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227 unsigned long long opslimit, size_t memlimit, int alg) |
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228 = NULL; |
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229 static void (*dll_randombytes_buf)(void * const buf, const size_t size); |
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230 |
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231 static struct { |
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232 const char *name; |
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233 SODIUM_PROC *ptr; |
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234 } sodium_funcname_table[] = { |
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235 {"sodium_init", (SODIUM_PROC*)&dll_sodium_init}, |
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236 {"sodium_free", (SODIUM_PROC*)&dll_sodium_free}, |
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237 {"sodium_malloc", (SODIUM_PROC*)&dll_sodium_malloc}, |
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238 {"sodium_memzero", (SODIUM_PROC*)&dll_sodium_memzero}, |
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239 {"sodium_mlock", (SODIUM_PROC*)&dll_sodium_mlock}, |
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240 {"sodium_munlock", (SODIUM_PROC*)&dll_sodium_munlock}, |
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241 {"crypto_secretstream_xchacha20poly1305_init_push", (SODIUM_PROC*)&dll_crypto_secretstream_xchacha20poly1305_init_push}, |
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242 {"crypto_secretstream_xchacha20poly1305_push", (SODIUM_PROC*)&dll_crypto_secretstream_xchacha20poly1305_push}, |
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243 {"crypto_secretstream_xchacha20poly1305_init_pull", (SODIUM_PROC*)&dll_crypto_secretstream_xchacha20poly1305_init_pull}, |
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244 {"crypto_secretstream_xchacha20poly1305_pull", (SODIUM_PROC*)&dll_crypto_secretstream_xchacha20poly1305_pull}, |
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245 {"crypto_pwhash", (SODIUM_PROC*)&dll_crypto_pwhash}, |
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246 {"randombytes_buf", (SODIUM_PROC*)&dll_randombytes_buf}, |
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247 {NULL, NULL} |
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248 }; |
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249 |
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250 static int |
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251 sodium_runtime_link_init(int verbose) |
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252 { |
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253 static HINSTANCE hsodium = NULL; |
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254 const char *libname = DYNAMIC_SODIUM_DLL; |
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255 int i; |
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256 |
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257 if (hsodium != NULL) |
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258 return OK; |
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259 |
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260 hsodium = load_dll(libname); |
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261 if (hsodium == NULL) |
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262 { |
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263 if (verbose) |
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264 semsg(_(e_could_not_load_library_str_str), libname, load_dll_error()); |
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265 return FAIL; |
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266 } |
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267 |
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268 for (i = 0; sodium_funcname_table[i].ptr; ++i) |
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269 { |
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270 if ((*sodium_funcname_table[i].ptr = symbol_from_dll(hsodium, |
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271 sodium_funcname_table[i].name)) == NULL) |
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272 { |
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273 close_dll(hsodium); |
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274 hsodium = NULL; |
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275 if (verbose) |
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276 semsg(_(e_could_not_load_library_function_str), sodium_funcname_table[i].name); |
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277 return FAIL; |
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278 } |
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279 } |
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280 return OK; |
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281 } |
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282 |
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283 static int |
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284 load_sodium(void) |
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285 { |
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286 if (sodium_runtime_link_init(TRUE) == FAIL) |
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287 return -1; |
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288 return dll_sodium_init(); |
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289 } |
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290 # endif |
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291 |
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292 # if defined(DYNAMIC_SODIUM) || defined(PROTO) |
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293 int |
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294 sodium_enabled(int verbose) |
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295 { |
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296 return sodium_runtime_link_init(verbose) == OK; |
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297 } |
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298 # endif |
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299 #endif |
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300 |
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301 #define CRYPT_MAGIC_LEN 12 // cannot change |
| 6122 | 302 static char crypt_magic_head[] = "VimCrypt~"; |
| 303 | |
| 304 /* | |
| 305 * Return int value for crypt method name. | |
| 306 * 0 for "zip", the old method. Also for any non-valid value. | |
| 307 * 1 for "blowfish". | |
| 308 * 2 for "blowfish2". | |
| 309 */ | |
| 310 int | |
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311 crypt_method_nr_from_name(char_u *name) |
| 6122 | 312 { |
| 313 int i; | |
| 314 | |
| 315 for (i = 0; i < CRYPT_M_COUNT; ++i) | |
| 316 if (STRCMP(name, cryptmethods[i].name) == 0) | |
| 317 return i; | |
| 318 return 0; | |
| 319 } | |
| 320 | |
| 321 /* | |
| 322 * Get the crypt method used for a file from "ptr[len]", the magic text at the | |
| 323 * start of the file. | |
| 324 * Returns -1 when no encryption used. | |
| 325 */ | |
| 326 int | |
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327 crypt_method_nr_from_magic(char *ptr, int len) |
| 6122 | 328 { |
| 329 int i; | |
| 330 | |
| 331 if (len < CRYPT_MAGIC_LEN) | |
| 332 return -1; | |
| 333 | |
| 334 for (i = 0; i < CRYPT_M_COUNT; i++) | |
| 335 if (memcmp(ptr, cryptmethods[i].magic, CRYPT_MAGIC_LEN) == 0) | |
| 336 return i; | |
| 337 | |
| 338 i = (int)STRLEN(crypt_magic_head); | |
| 339 if (len >= i && memcmp(ptr, crypt_magic_head, i) == 0) | |
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340 emsg(_(e_file_is_encrypted_with_unknown_method)); |
| 6122 | 341 |
| 342 return -1; | |
| 343 } | |
| 344 | |
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345 #ifdef CRYPT_NOT_INPLACE |
| 6122 | 346 /* |
| 347 * Return TRUE if the crypt method for "method_nr" can be done in-place. | |
| 348 */ | |
| 349 int | |
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350 crypt_works_inplace(cryptstate_T *state) |
| 6122 | 351 { |
| 352 return cryptmethods[state->method_nr].works_inplace; | |
| 353 } | |
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354 #endif |
| 6122 | 355 |
| 356 /* | |
| 357 * Get the crypt method for buffer "buf" as a number. | |
| 358 */ | |
| 359 int | |
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360 crypt_get_method_nr(buf_T *buf) |
| 6122 | 361 { |
| 362 return crypt_method_nr_from_name(*buf->b_p_cm == NUL ? p_cm : buf->b_p_cm); | |
| 363 } | |
| 364 | |
| 365 /* | |
| 366 * Return TRUE when the buffer uses an encryption method that encrypts the | |
| 367 * whole undo file, not only the text. | |
| 368 */ | |
| 369 int | |
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370 crypt_whole_undofile(int method_nr) |
| 6122 | 371 { |
| 372 return cryptmethods[method_nr].whole_undofile; | |
| 373 } | |
| 374 | |
| 375 /* | |
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376 * Get crypt method specific length of the file header in bytes. |
| 6122 | 377 */ |
| 378 int | |
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379 crypt_get_header_len(int method_nr) |
| 6122 | 380 { |
| 381 return CRYPT_MAGIC_LEN | |
| 382 + cryptmethods[method_nr].salt_len | |
| 383 + cryptmethods[method_nr].seed_len; | |
| 384 } | |
| 385 | |
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386 |
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387 #if defined(FEAT_SODIUM) || defined(PROTO) |
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388 /* |
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389 * Get maximum crypt method specific length of the file header in bytes. |
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390 */ |
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391 int |
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392 crypt_get_max_header_len() |
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393 { |
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394 int i; |
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395 int max = 0; |
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396 int temp = 0; |
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397 |
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398 for (i = 0; i < CRYPT_M_COUNT; ++i) |
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399 { |
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400 temp = crypt_get_header_len(i); |
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401 if (temp > max) |
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402 max = temp; |
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403 } |
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404 return max; |
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405 } |
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406 #endif |
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407 |
| 6122 | 408 /* |
| 409 * Set the crypt method for buffer "buf" to "method_nr" using the int value as | |
| 410 * returned by crypt_method_nr_from_name(). | |
| 411 */ | |
| 412 void | |
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413 crypt_set_cm_option(buf_T *buf, int method_nr) |
| 6122 | 414 { |
| 415 free_string_option(buf->b_p_cm); | |
| 416 buf->b_p_cm = vim_strsave((char_u *)cryptmethods[method_nr].name); | |
| 417 } | |
| 418 | |
| 419 /* | |
| 420 * If the crypt method for the current buffer has a self-test, run it and | |
| 421 * return OK/FAIL. | |
| 422 */ | |
| 423 int | |
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424 crypt_self_test(void) |
| 6122 | 425 { |
| 426 int method_nr = crypt_get_method_nr(curbuf); | |
| 427 | |
| 428 if (cryptmethods[method_nr].self_test_fn == NULL) | |
| 429 return OK; | |
| 430 return cryptmethods[method_nr].self_test_fn(); | |
| 431 } | |
| 432 | |
| 433 /* | |
| 434 * Allocate a crypt state and initialize it. | |
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435 * Return NULL for failure. |
| 6122 | 436 */ |
| 437 cryptstate_T * | |
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438 crypt_create( |
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439 int method_nr, |
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440 char_u *key, |
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441 char_u *salt, |
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442 int salt_len, |
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443 char_u *seed, |
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444 int seed_len) |
| 6122 | 445 { |
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446 cryptstate_T *state = ALLOC_ONE(cryptstate_T); |
| 6122 | 447 |
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448 if (state == NULL) |
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449 return state; |
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450 |
| 6122 | 451 state->method_nr = method_nr; |
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452 if (cryptmethods[method_nr].init_fn( |
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453 state, key, salt, salt_len, seed, seed_len) == FAIL) |
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454 { |
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455 vim_free(state); |
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456 return NULL; |
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457 } |
| 6122 | 458 return state; |
| 459 } | |
| 460 | |
| 461 /* | |
| 462 * Allocate a crypt state from a file header and initialize it. | |
| 463 * Assumes that header contains at least the number of bytes that | |
| 464 * crypt_get_header_len() returns for "method_nr". | |
| 465 */ | |
| 466 cryptstate_T * | |
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467 crypt_create_from_header( |
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468 int method_nr, |
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469 char_u *key, |
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470 char_u *header) |
| 6122 | 471 { |
| 472 char_u *salt = NULL; | |
| 473 char_u *seed = NULL; | |
| 474 int salt_len = cryptmethods[method_nr].salt_len; | |
| 475 int seed_len = cryptmethods[method_nr].seed_len; | |
| 476 | |
| 477 if (salt_len > 0) | |
| 478 salt = header + CRYPT_MAGIC_LEN; | |
| 479 if (seed_len > 0) | |
| 480 seed = header + CRYPT_MAGIC_LEN + salt_len; | |
| 481 | |
| 482 return crypt_create(method_nr, key, salt, salt_len, seed, seed_len); | |
| 483 } | |
| 484 | |
| 485 /* | |
| 486 * Read the crypt method specific header data from "fp". | |
| 487 * Return an allocated cryptstate_T or NULL on error. | |
| 488 */ | |
| 489 cryptstate_T * | |
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490 crypt_create_from_file(FILE *fp, char_u *key) |
| 6122 | 491 { |
| 492 int method_nr; | |
| 493 int header_len; | |
| 494 char magic_buffer[CRYPT_MAGIC_LEN]; | |
| 495 char_u *buffer; | |
| 496 cryptstate_T *state; | |
| 497 | |
| 498 if (fread(magic_buffer, CRYPT_MAGIC_LEN, 1, fp) != 1) | |
| 499 return NULL; | |
| 500 method_nr = crypt_method_nr_from_magic(magic_buffer, CRYPT_MAGIC_LEN); | |
| 501 if (method_nr < 0) | |
| 502 return NULL; | |
| 503 | |
| 504 header_len = crypt_get_header_len(method_nr); | |
| 505 if ((buffer = alloc(header_len)) == NULL) | |
| 506 return NULL; | |
| 507 mch_memmove(buffer, magic_buffer, CRYPT_MAGIC_LEN); | |
| 508 if (header_len > CRYPT_MAGIC_LEN | |
| 509 && fread(buffer + CRYPT_MAGIC_LEN, | |
| 510 header_len - CRYPT_MAGIC_LEN, 1, fp) != 1) | |
| 511 { | |
| 512 vim_free(buffer); | |
| 513 return NULL; | |
| 514 } | |
| 515 | |
| 516 state = crypt_create_from_header(method_nr, key, buffer); | |
| 517 vim_free(buffer); | |
| 518 return state; | |
| 519 } | |
| 520 | |
| 521 /* | |
| 522 * Allocate a cryptstate_T for writing and initialize it with "key". | |
| 523 * Allocates and fills in the header and stores it in "header", setting | |
| 524 * "header_len". The header may include salt and seed, depending on | |
| 525 * cryptmethod. Caller must free header. | |
| 526 * Returns the state or NULL on failure. | |
| 527 */ | |
| 528 cryptstate_T * | |
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529 crypt_create_for_writing( |
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530 int method_nr, |
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531 char_u *key, |
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532 char_u **header, |
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533 int *header_len) |
| 6122 | 534 { |
| 535 int len = crypt_get_header_len(method_nr); | |
| 536 char_u *salt = NULL; | |
| 537 char_u *seed = NULL; | |
| 538 int salt_len = cryptmethods[method_nr].salt_len; | |
| 539 int seed_len = cryptmethods[method_nr].seed_len; | |
| 540 cryptstate_T *state; | |
| 541 | |
| 542 *header_len = len; | |
| 543 *header = alloc(len); | |
| 544 if (*header == NULL) | |
| 545 return NULL; | |
| 546 | |
| 547 mch_memmove(*header, cryptmethods[method_nr].magic, CRYPT_MAGIC_LEN); | |
| 548 if (salt_len > 0 || seed_len > 0) | |
| 549 { | |
| 550 if (salt_len > 0) | |
| 551 salt = *header + CRYPT_MAGIC_LEN; | |
| 552 if (seed_len > 0) | |
| 553 seed = *header + CRYPT_MAGIC_LEN + salt_len; | |
| 554 | |
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555 // TODO: Should this be crypt method specific? (Probably not worth |
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556 // it). sha2_seed is pretty bad for large amounts of entropy, so make |
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557 // that into something which is suitable for anything. |
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558 #ifdef FEAT_SODIUM |
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559 if (sodium_init() >= 0) |
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560 { |
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561 if (salt_len > 0) |
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562 randombytes_buf(salt, salt_len); |
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563 if (seed_len > 0) |
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564 randombytes_buf(seed, seed_len); |
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565 } |
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566 else |
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567 #endif |
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568 sha2_seed(salt, salt_len, seed, seed_len); |
| 6122 | 569 } |
| 570 state = crypt_create(method_nr, key, salt, salt_len, seed, seed_len); | |
| 571 if (state == NULL) | |
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572 VIM_CLEAR(*header); |
| 6122 | 573 return state; |
| 574 } | |
| 575 | |
| 576 /* | |
| 577 * Free the crypt state. | |
| 578 */ | |
| 579 void | |
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580 crypt_free_state(cryptstate_T *state) |
| 6122 | 581 { |
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582 #ifdef FEAT_SODIUM |
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583 if (state->method_nr == CRYPT_M_SOD) |
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584 { |
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585 sodium_munlock(((sodium_state_T *)state->method_state)->key, |
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586 crypto_box_SEEDBYTES); |
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587 sodium_memzero(state->method_state, sizeof(sodium_state_T)); |
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588 sodium_free(state->method_state); |
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589 } |
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590 else |
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591 #endif |
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592 vim_free(state->method_state); |
| 6122 | 593 vim_free(state); |
| 594 } | |
| 595 | |
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596 #ifdef CRYPT_NOT_INPLACE |
| 6122 | 597 /* |
| 598 * Encode "from[len]" and store the result in a newly allocated buffer, which | |
| 599 * is stored in "newptr". | |
| 600 * Return number of bytes in "newptr", 0 for need more or -1 on error. | |
| 601 */ | |
| 602 long | |
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603 crypt_encode_alloc( |
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604 cryptstate_T *state, |
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605 char_u *from, |
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606 size_t len, |
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607 char_u **newptr, |
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608 int last) |
| 6122 | 609 { |
| 610 cryptmethod_T *method = &cryptmethods[state->method_nr]; | |
| 611 | |
| 612 if (method->encode_buffer_fn != NULL) | |
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613 // Has buffer function, pass through. |
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614 return method->encode_buffer_fn(state, from, len, newptr, last); |
| 6122 | 615 if (len == 0) |
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616 // Not buffering, just return EOF. |
| 6132 | 617 return (long)len; |
| 6122 | 618 |
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619 *newptr = alloc(len + 50); |
| 6122 | 620 if (*newptr == NULL) |
| 621 return -1; | |
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622 method->encode_fn(state, from, len, *newptr, last); |
| 6132 | 623 return (long)len; |
| 6122 | 624 } |
| 625 | |
| 626 /* | |
| 627 * Decrypt "ptr[len]" and store the result in a newly allocated buffer, which | |
| 628 * is stored in "newptr". | |
| 629 * Return number of bytes in "newptr", 0 for need more or -1 on error. | |
| 630 */ | |
| 631 long | |
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632 crypt_decode_alloc( |
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633 cryptstate_T *state, |
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634 char_u *ptr, |
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635 long len, |
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636 char_u **newptr, |
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637 int last) |
| 6122 | 638 { |
| 639 cryptmethod_T *method = &cryptmethods[state->method_nr]; | |
| 640 | |
| 641 if (method->decode_buffer_fn != NULL) | |
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642 // Has buffer function, pass through. |
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643 return method->decode_buffer_fn(state, ptr, len, newptr, last); |
| 6122 | 644 |
| 645 if (len == 0) | |
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646 // Not buffering, just return EOF. |
| 6122 | 647 return len; |
| 648 | |
| 649 *newptr = alloc(len); | |
| 650 if (*newptr == NULL) | |
| 651 return -1; | |
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652 method->decode_fn(state, ptr, len, *newptr, last); |
| 6122 | 653 return len; |
| 654 } | |
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655 #endif |
| 6122 | 656 |
| 657 /* | |
| 658 * Encrypting "from[len]" into "to[len]". | |
| 659 */ | |
| 660 void | |
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661 crypt_encode( |
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662 cryptstate_T *state, |
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663 char_u *from, |
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664 size_t len, |
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665 char_u *to, |
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666 int last) |
| 6122 | 667 { |
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668 cryptmethods[state->method_nr].encode_fn(state, from, len, to, last); |
| 6122 | 669 } |
| 670 | |
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671 #if 0 // unused |
| 6122 | 672 /* |
| 673 * decrypting "from[len]" into "to[len]". | |
| 674 */ | |
| 675 void | |
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676 crypt_decode( |
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677 cryptstate_T *state, |
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678 char_u *from, |
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679 size_t len, |
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680 char_u *to, |
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681 int last) |
| 6122 | 682 { |
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683 cryptmethods[state->method_nr].decode_fn(state, from, len, to, last); |
| 6122 | 684 } |
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685 #endif |
| 6122 | 686 |
| 687 /* | |
| 688 * Simple inplace encryption, modifies "buf[len]" in place. | |
| 689 */ | |
| 690 void | |
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691 crypt_encode_inplace( |
|
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692 cryptstate_T *state, |
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693 char_u *buf, |
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694 size_t len, |
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695 int last) |
| 6122 | 696 { |
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697 cryptmethods[state->method_nr].encode_inplace_fn(state, buf, len, |
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698 buf, last); |
| 6122 | 699 } |
| 700 | |
| 701 /* | |
| 702 * Simple inplace decryption, modifies "buf[len]" in place. | |
| 703 */ | |
| 704 void | |
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705 crypt_decode_inplace( |
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706 cryptstate_T *state, |
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707 char_u *buf, |
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708 size_t len, |
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709 int last) |
| 6122 | 710 { |
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711 cryptmethods[state->method_nr].decode_inplace_fn(state, buf, len, |
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712 buf, last); |
| 6122 | 713 } |
| 714 | |
| 715 /* | |
| 716 * Free an allocated crypt key. Clear the text to make sure it doesn't stay | |
| 717 * in memory anywhere. | |
| 718 */ | |
| 719 void | |
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720 crypt_free_key(char_u *key) |
| 6122 | 721 { |
| 722 char_u *p; | |
| 723 | |
| 724 if (key != NULL) | |
| 725 { | |
| 726 for (p = key; *p != NUL; ++p) | |
| 727 *p = 0; | |
| 728 vim_free(key); | |
| 729 } | |
| 730 } | |
| 731 | |
| 732 /* | |
| 6353 | 733 * Check the crypt method and give a warning if it's outdated. |
| 734 */ | |
| 735 void | |
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736 crypt_check_method(int method) |
| 6353 | 737 { |
| 738 if (method < CRYPT_M_BF2) | |
| 739 { | |
| 740 msg_scroll = TRUE; | |
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741 msg(_("Warning: Using a weak encryption method; see :help 'cm'")); |
| 6353 | 742 } |
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743 } |
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744 |
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745 #ifdef FEAT_SODIUM |
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746 static void |
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747 crypt_check_swapfile_curbuf(void) |
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748 { |
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749 int method = crypt_get_method_nr(curbuf); |
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750 if (method == CRYPT_M_SOD) |
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751 { |
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752 // encryption uses padding and MAC, that does not work very well with |
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753 // swap and undo files, so disable them |
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754 mf_close_file(curbuf, TRUE); // remove the swap file |
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755 set_option_value((char_u *)"swf", 0, NULL, OPT_LOCAL); |
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756 msg_scroll = TRUE; |
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757 msg(_("Note: Encryption of swapfile not supported, disabling swap file")); |
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758 } |
| 6353 | 759 } |
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760 #endif |
| 6353 | 761 |
| 762 void | |
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763 crypt_check_current_method(void) |
| 6353 | 764 { |
| 765 crypt_check_method(crypt_get_method_nr(curbuf)); | |
| 766 } | |
| 767 | |
| 768 /* | |
| 6122 | 769 * Ask the user for a crypt key. |
| 770 * When "store" is TRUE, the new key is stored in the 'key' option, and the | |
| 771 * 'key' option value is returned: Don't free it. | |
| 772 * When "store" is FALSE, the typed key is returned in allocated memory. | |
| 773 * Returns NULL on failure. | |
| 774 */ | |
| 775 char_u * | |
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776 crypt_get_key( |
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777 int store, |
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778 int twice) // Ask for the key twice. |
| 6122 | 779 { |
| 780 char_u *p1, *p2 = NULL; | |
| 781 int round; | |
| 782 | |
| 783 for (round = 0; ; ++round) | |
| 784 { | |
| 785 cmdline_star = TRUE; | |
| 786 cmdline_row = msg_row; | |
| 787 p1 = getcmdline_prompt(NUL, round == 0 | |
| 788 ? (char_u *)_("Enter encryption key: ") | |
| 789 : (char_u *)_("Enter same key again: "), 0, EXPAND_NOTHING, | |
| 790 NULL); | |
| 791 cmdline_star = FALSE; | |
| 792 | |
| 793 if (p1 == NULL) | |
| 794 break; | |
| 795 | |
| 796 if (round == twice) | |
| 797 { | |
| 798 if (p2 != NULL && STRCMP(p1, p2) != 0) | |
| 799 { | |
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800 msg(_("Keys don't match!")); |
| 6122 | 801 crypt_free_key(p1); |
| 802 crypt_free_key(p2); | |
| 803 p2 = NULL; | |
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804 round = -1; // do it again |
| 6122 | 805 continue; |
| 806 } | |
| 807 | |
| 808 if (store) | |
| 809 { | |
| 810 set_option_value((char_u *)"key", 0L, p1, OPT_LOCAL); | |
| 811 crypt_free_key(p1); | |
| 812 p1 = curbuf->b_p_key; | |
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813 #ifdef FEAT_SODIUM |
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814 crypt_check_swapfile_curbuf(); |
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815 #endif |
| 6122 | 816 } |
| 817 break; | |
| 818 } | |
| 819 p2 = p1; | |
| 820 } | |
| 821 | |
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822 // since the user typed this, no need to wait for return |
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823 if (crypt_get_method_nr(curbuf) != CRYPT_M_SOD) |
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824 { |
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825 if (msg_didout) |
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826 msg_putchar('\n'); |
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827 need_wait_return = FALSE; |
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828 msg_didout = FALSE; |
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829 } |
| 6122 | 830 |
| 831 crypt_free_key(p2); | |
| 832 return p1; | |
| 833 } | |
| 834 | |
| 835 | |
| 836 /* | |
| 837 * Append a message to IObuff for the encryption/decryption method being used. | |
| 838 */ | |
| 839 void | |
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840 crypt_append_msg( |
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841 buf_T *buf) |
| 6122 | 842 { |
| 843 if (crypt_get_method_nr(buf) == 0) | |
| 844 STRCAT(IObuff, _("[crypted]")); | |
| 845 else | |
| 846 { | |
| 847 STRCAT(IObuff, "["); | |
| 848 STRCAT(IObuff, *buf->b_p_cm == NUL ? p_cm : buf->b_p_cm); | |
| 849 STRCAT(IObuff, "]"); | |
| 850 } | |
| 851 } | |
| 852 | |
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853 int |
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854 crypt_sodium_init( |
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855 cryptstate_T *state UNUSED, |
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856 char_u *key UNUSED, |
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857 char_u *salt UNUSED, |
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858 int salt_len UNUSED, |
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859 char_u *seed UNUSED, |
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860 int seed_len UNUSED) |
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861 { |
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862 # ifdef FEAT_SODIUM |
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863 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
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864 unsigned char dkey[crypto_box_SEEDBYTES]; // 32 |
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865 sodium_state_T *sd_state; |
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866 int retval = 0; |
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867 |
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868 if (sodium_init() < 0) |
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869 return FAIL; |
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870 |
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871 sd_state = (sodium_state_T *)sodium_malloc(sizeof(sodium_state_T)); |
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872 sodium_memzero(sd_state, sizeof(sodium_state_T)); |
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873 |
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874 // derive a key from the password |
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875 if (crypto_pwhash(dkey, sizeof(dkey), (const char *)key, STRLEN(key), salt, |
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876 crypto_pwhash_OPSLIMIT_INTERACTIVE, crypto_pwhash_MEMLIMIT_INTERACTIVE, |
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877 crypto_pwhash_ALG_DEFAULT) != 0) |
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878 { |
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879 // out of memory |
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880 sodium_free(sd_state); |
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881 return FAIL; |
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882 } |
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diff
changeset
|
883 memcpy(sd_state->key, dkey, crypto_box_SEEDBYTES); |
|
25417
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
884 |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
885 retval += sodium_mlock(sd_state->key, crypto_box_SEEDBYTES); |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
886 retval += sodium_mlock(key, STRLEN(key)); |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
887 |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
888 if (retval < 0) |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
889 { |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
890 emsg(_(e_encryption_sodium_mlock_failed)); |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
891 sodium_free(sd_state); |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
892 return FAIL; |
|
1919361a53da
patch 8.2.3245: the crypt key may appear in a swap partition
Bram Moolenaar <Bram@vim.org>
parents:
25362
diff
changeset
|
893 } |
|
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
894 sd_state->count = 0; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
895 state->method_state = sd_state; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
896 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
897 return OK; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
898 # else |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
899 emsg(e_libsodium_not_built_in); |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
900 return FAIL; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
901 # endif |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
902 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
903 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
904 /* |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
905 * 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
|
906 * "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
|
907 * 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>
parents:
18757
diff
changeset
|
908 */ |
|
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
909 #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
|
910 void |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
911 crypt_sodium_encode( |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
912 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
|
913 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
|
914 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
|
915 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
|
916 int last UNUSED) |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
917 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
918 # ifdef FEAT_SODIUM |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
919 // 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
|
920 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
|
921 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
|
922 ? 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
|
923 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
924 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
|
925 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
926 if (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
|
927 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
928 emsg(e_libsodium_cannot_encrypt_header); |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
929 return; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
930 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
931 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
|
932 to, sod_st->key); |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
933 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
|
934 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
935 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
936 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
|
937 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
938 emsg(e_libsodium_cannot_encrypt_buffer); |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
939 return; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
940 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
941 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
942 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>
parents:
18757
diff
changeset
|
943 from, len, NULL, 0, tag); |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
944 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
945 sod_st->count++; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
946 # endif |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
947 } |
|
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
948 #endif |
|
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
949 |
|
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
950 /* |
|
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
951 * 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
|
952 * "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
|
953 */ |
|
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
954 #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
|
955 void |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
956 crypt_sodium_decode( |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
957 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
|
958 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
|
959 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
|
960 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
|
961 int last UNUSED) |
|
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 # ifdef FEAT_SODIUM |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
964 // 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
|
965 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
|
966 unsigned char tag; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
967 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
|
968 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
|
969 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
|
970 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
|
971 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
972 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
|
973 && 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
|
974 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
975 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
|
976 return; |
|
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 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
979 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
|
980 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
981 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
|
982 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
983 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
|
984 return; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
985 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
986 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
|
987 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
988 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
|
989 &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
|
990 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
991 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
|
992 goto fail; |
|
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 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
|
996 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
|
997 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
998 if (p1 == p2) |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
999 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
|
1000 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1001 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1002 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
|
1003 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1004 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
|
1005 goto fail; |
|
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1006 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1007 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
|
1008 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
|
1009 { |
|
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
1010 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
|
1011 goto fail; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1012 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1013 sod_st->count++; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1014 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1015 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
|
1016 { |
|
24986
fa31a0ea09e1
patch 8.2.3030: Coverity reports a memory leak
Bram Moolenaar <Bram@vim.org>
parents:
24970
diff
changeset
|
1017 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
|
1018 goto fail; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1019 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1020 if (p1 == p2) |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1021 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
|
1022 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1023 fail: |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1024 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
|
1025 # endif |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1026 } |
|
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
1027 #endif |
|
24970
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1028 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1029 /* |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1030 * 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
|
1031 * "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
|
1032 */ |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1033 long |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1034 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
|
1035 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
|
1036 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
|
1037 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
|
1038 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
|
1039 int last UNUSED) |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1040 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1041 # ifdef FEAT_SODIUM |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1042 // 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
|
1043 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
|
1044 char_u *ptr; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1045 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
|
1046 ? 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
|
1047 int length; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1048 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
|
1049 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
|
1050 |
|
24990
85d1e82ed134
patch 8.2.3032: build problems with MSVC, other crypt issues with libsodium
Bram Moolenaar <Bram@vim.org>
parents:
24986
diff
changeset
|
1051 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
|
1052 + (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
|
1053 *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
|
1054 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
|
1055 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1056 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
|
1057 return -1; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1058 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1059 ptr = *buf_out; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1060 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1061 if (first) |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1062 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1063 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
|
1064 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
|
1065 ptr += 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
|
1066 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1067 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1068 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:
18757
diff
changeset
|
1069 &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:
18757
diff
changeset
|
1070 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1071 sod_st->count++; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1072 return out_len + (first |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1073 ? 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
|
1074 # else |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1075 return -1; |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1076 # endif |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1077 } |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1078 |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1079 /* |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1080 * 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
|
1081 * "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
|
1082 */ |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1083 long |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1084 crypt_sodium_buffer_decode( |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1085 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
|
1086 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
|
1087 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
|
1088 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
|
1089 int last UNUSED) |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1090 { |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1091 # ifdef FEAT_SODIUM |
|
7e9e53a0368f
patch 8.2.3022: available encryption methods are not strong enough
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
1092 // crypto_box_SEEDBYTES == crypto_secretstream_xchacha20poly1305_KEYBYTES |
|
7e9e53a0368f
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1093 sodium_state_T *sod_st = state->method_state; |
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1094 unsigned char tag; |
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1095 unsigned long long out_len; |
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1096 *buf_out = alloc_clear(len); |
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1097 if (*buf_out == NULL) |
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1098 { |
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1099 emsg(e_libsodium_cannot_allocate_buffer); |
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1100 return -1; |
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1101 } |
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1102 |
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1103 if (sod_st->count == 0) |
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1104 { |
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1105 if (crypto_secretstream_xchacha20poly1305_init_pull(&sod_st->state, |
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1106 from, sod_st->key) != 0) |
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1107 { |
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1108 emsg(e_libsodium_decryption_failed_header_incomplete); |
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1109 return -1; |
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1110 } |
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1111 from += crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
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1112 len -= crypto_secretstream_xchacha20poly1305_HEADERBYTES; |
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1113 sod_st->count++; |
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1114 } |
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1115 if (crypto_secretstream_xchacha20poly1305_pull(&sod_st->state, |
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1116 *buf_out, &out_len, &tag, from, len, NULL, 0) != 0) |
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1117 { |
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1118 emsg(e_libsodium_decryption_failed); |
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1119 return -1; |
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1120 } |
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1121 |
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1122 if (tag == crypto_secretstream_xchacha20poly1305_TAG_FINAL && !last) |
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1123 emsg(e_libsodium_decryption_failed_premature); |
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1124 return (long) out_len; |
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1125 # else |
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1126 return -1; |
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1127 # endif |
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1128 } |
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1129 |
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1130 # if defined(FEAT_SODIUM) || defined(PROTO) |
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1131 int |
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1132 crypt_sodium_munlock(void *const addr, const size_t len) |
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1133 { |
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1134 return sodium_munlock(addr, len); |
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1135 } |
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1136 |
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1137 void |
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1138 crypt_sodium_randombytes_buf(void *const buf, const size_t size) |
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1139 { |
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1140 randombytes_buf(buf, size); |
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1141 } |
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1142 # endif |
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1143 |
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1144 #endif // FEAT_CRYPT |