updated for version 7.3.816
Problem: Can't compute a hash.
Solution: Add the sha256() function. (Tyru, Hirohito Higashi)
diff --git a/src/proto/sha256.pro b/src/proto/sha256.pro
index 3c4d975..464b354 100644
--- a/src/proto/sha256.pro
+++ b/src/proto/sha256.pro
@@ -2,6 +2,7 @@
void sha256_start __ARGS((context_sha256_T *ctx));
void sha256_update __ARGS((context_sha256_T *ctx, char_u *input, UINT32_T length));
void sha256_finish __ARGS((context_sha256_T *ctx, char_u digest[32]));
+char_u *sha256_bytes __ARGS((char_u *buf, int buf_len, char_u *salt, int salt_len));
char_u *sha256_key __ARGS((char_u *buf, char_u *salt, int salt_len));
int sha256_self_test __ARGS((void));
void sha2_seed __ARGS((char_u *header, int header_len, char_u *salt, int salt_len));