updated for version 7.4.399 Problem: Encryption implementation is messy. Blowfish encryption has a weakness. Solution: Refactor the encryption, store the state in an allocated struct instead of using a save/restore mechanism. Introduce the "blowfish2" method, which does not have the weakness and encrypts the whole undo file. (largely by David Leadbeater)

/* crypt_zip.c */
void crypt_zip_init __ARGS((cryptstate_T *state, char_u *key, char_u *salt, int salt_len, char_u *seed, int seed_len));
void crypt_zip_encode __ARGS((cryptstate_T *state, char_u *from, size_t len, char_u *to));
void crypt_zip_decode __ARGS((cryptstate_T *state, char_u *from, size_t len, char_u *to));
/* vim: set ft=c : */