diff options
Diffstat (limited to 'sha1dc/sha1.c')
-rw-r--r-- | sha1dc/sha1.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sha1dc/sha1.c b/sha1dc/sha1.c index 8ff2321dfb..6dd0da3608 100644 --- a/sha1dc/sha1.c +++ b/sha1dc/sha1.c @@ -1786,3 +1786,23 @@ int SHA1DCFinal(unsigned char output[20], SHA1_CTX *ctx) output[19] = (unsigned char)(ctx->ihv[4]); return ctx->found_collision; } + +void git_SHA1DCFinal(unsigned char hash[20], SHA1_CTX *ctx) +{ + if (!SHA1DCFinal(hash, ctx)) + return; + die("SHA-1 appears to be part of a collision attack: %s", + sha1_to_hex(hash)); +} + +void git_SHA1DCUpdate(SHA1_CTX *ctx, const void *vdata, unsigned long len) +{ + const char *data = vdata; + /* We expect an unsigned long, but sha1dc only takes an int */ + while (len > INT_MAX) { + SHA1DCUpdate(ctx, data, INT_MAX); + data += INT_MAX; + len -= INT_MAX; + } + SHA1DCUpdate(ctx, data, len); +} |