Revision 7f4e64169352e03476b0ea64e7e2973669e491a2 authored by Junio C Hamano on 21 November 2018, 14:24:52 UTC, committed by Junio C Hamano on 21 November 2018, 14:24:52 UTC
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 7cb1ea1
sha1dc_git.c
#include "cache.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",
sha1_to_hex(hash));
}
/*
* 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);
}
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