Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2
   3/*
   4 * Same as SHA1DCFinal, but convert collision attack case into a verbose die().
   5 */
   6void git_SHA1DCFinal(unsigned char hash[20], SHA1_CTX *ctx)
   7{
   8        if (!SHA1DCFinal(hash, ctx))
   9                return;
  10        die("SHA-1 appears to be part of a collision attack: %s",
  11            sha1_to_hex(hash));
  12}
  13
  14/*
  15 * Same as SHA1DCUpdate, but adjust types to match git's usual interface.
  16 */
  17void git_SHA1DCUpdate(SHA1_CTX *ctx, const void *vdata, unsigned long len)
  18{
  19        const char *data = vdata;
  20        /* We expect an unsigned long, but sha1dc only takes an int */
  21        while (len > INT_MAX) {
  22                SHA1DCUpdate(ctx, data, INT_MAX);
  23                data += INT_MAX;
  24                len -= INT_MAX;
  25        }
  26        SHA1DCUpdate(ctx, data, len);
  27}