41 lines
940 B
C
41 lines
940 B
C
#include "git-compat-util.h"
|
|
#include "sha1dc_git.h"
|
|
#include "hex.h"
|
|
|
|
#ifdef DC_SHA1_EXTERNAL
|
|
/*
|
|
* Same as SHA1DCInit, but with default save_hash=0
|
|
*/
|
|
void git_SHA1DCInit(SHA1_CTX *ctx)
|
|
{
|
|
SHA1DCInit(ctx);
|
|
SHA1DCSetSafeHash(ctx, 0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Same as SHA1DCFinal, but convert collision attack case into a verbose die().
|
|
*/
|
|
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",
|
|
hash_to_hex_algop(hash, &hash_algos[GIT_HASH_SHA1]));
|
|
}
|
|
|
|
/*
|
|
* Same as SHA1DCUpdate, but adjust types to match git's usual interface.
|
|
*/
|
|
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);
|
|
}
|