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Commit | Line | Data |
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36f048c5 | 1 | #include "cache.h" |
41771fa4 | 2 | #include "hex.h" |
36f048c5 | 3 | |
3964cbbb TI |
4 | #ifdef DC_SHA1_EXTERNAL |
5 | /* | |
6 | * Same as SHA1DCInit, but with default save_hash=0 | |
7 | */ | |
8 | void git_SHA1DCInit(SHA1_CTX *ctx) | |
9 | { | |
10 | SHA1DCInit(ctx); | |
11 | SHA1DCSetSafeHash(ctx, 0); | |
12 | } | |
13 | #endif | |
14 | ||
a0103914 | 15 | /* |
36f048c5 | 16 | * Same as SHA1DCFinal, but convert collision attack case into a verbose die(). |
a0103914 | 17 | */ |
a0103914 ÆAB |
18 | void git_SHA1DCFinal(unsigned char hash[20], SHA1_CTX *ctx) |
19 | { | |
20 | if (!SHA1DCFinal(hash, ctx)) | |
21 | return; | |
22 | die("SHA-1 appears to be part of a collision attack: %s", | |
b19f3fe9 | 23 | hash_to_hex_algop(hash, &hash_algos[GIT_HASH_SHA1])); |
a0103914 ÆAB |
24 | } |
25 | ||
36f048c5 TI |
26 | /* |
27 | * Same as SHA1DCUpdate, but adjust types to match git's usual interface. | |
28 | */ | |
a0103914 ÆAB |
29 | void git_SHA1DCUpdate(SHA1_CTX *ctx, const void *vdata, unsigned long len) |
30 | { | |
31 | const char *data = vdata; | |
32 | /* We expect an unsigned long, but sha1dc only takes an int */ | |
33 | while (len > INT_MAX) { | |
34 | SHA1DCUpdate(ctx, data, INT_MAX); | |
35 | data += INT_MAX; | |
36 | len -= INT_MAX; | |
37 | } | |
38 | SHA1DCUpdate(ctx, data, len); | |
39 | } |