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| author | Roger Dingledine <arma@torproject.org> | 2004-05-15 23:49:41 +0000 |
|---|---|---|
| committer | Roger Dingledine <arma@torproject.org> | 2004-05-15 23:49:41 +0000 |
| commit | 6dc576bab7cf2be774649ea9b3fa665dbc6566d6 (patch) | |
| tree | 5f28ee8b3c2e2185b61f34426f911eb1daa71039 | |
| parent | 04bb8c804677f1ba1aa0212e34c19869c853a1e4 (diff) | |
| download | tor-6dc576bab7cf2be774649ea9b3fa665dbc6566d6.tar.gz tor-6dc576bab7cf2be774649ea9b3fa665dbc6566d6.zip | |
bugfix: our integrity-checking digest was checking only the most
recent cell, not the previous cells like we'd thought.
this change is backward incompatible.
svn:r1868
| -rw-r--r-- | src/common/crypto.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/common/crypto.c b/src/common/crypto.c index ba6e99f024..1c265628ae 100644 --- a/src/common/crypto.c +++ b/src/common/crypto.c @@ -1029,9 +1029,12 @@ void crypto_digest_get_digest(crypto_digest_env_t *digest, char *out, size_t out_len) { static char r[DIGEST_LEN]; + SHA_CTX tmpctx; tor_assert(digest && out); tor_assert(out_len <= DIGEST_LEN); - SHA1_Final(r, &digest->d); + /* memcpy into a temporary ctx, since SHA1_Final clears the context */ + memcpy(&tmpctx, &digest->d, sizeof(SHA_CTX)); + SHA1_Final(r, &tmpctx); memcpy(out, r, out_len); } |