3 #ifdef DC_SHA1_EXTERNAL
5 * Same as SHA1DCInit, but with default save_hash=0
7 void git_SHA1DCInit(SHA1_CTX *ctx)
10 SHA1DCSetSafeHash(ctx, 0);
15 * Same as SHA1DCFinal, but convert collision attack case into a verbose die().
17 void git_SHA1DCFinal(unsigned char hash[20], SHA1_CTX *ctx)
19 if (!SHA1DCFinal(hash, ctx))
21 die("SHA-1 appears to be part of a collision attack: %s",
26 * Same as SHA1DCUpdate, but adjust types to match git's usual interface.
28 void git_SHA1DCUpdate(SHA1_CTX *ctx, const void *vdata, unsigned long len)
30 const char *data = vdata;
31 /* We expect an unsigned long, but sha1dc only takes an int */
32 while (len > INT_MAX) {
33 SHA1DCUpdate(ctx, data, INT_MAX);
37 SHA1DCUpdate(ctx, data, len);