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author | Timm Bäder <mail@baedert.org> | 2015-10-05 15:06:55 +0200 |
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committer | Timm Bäder <mail@baedert.org> | 2015-10-05 17:21:08 +0200 |
commit | e412da58080eec2e771482e7e4c509b9e71477ff (patch) | |
tree | 7232cd141efc474b03c7cec54f0ee177bb9361f4 | |
parent | 199a39c25355e33f39bfcb0ad2a59401fd20705b (diff) | |
download | librest-e412da58080eec2e771482e7e4c509b9e71477ff.tar.gz |
sha: Use GHmac
https://bugzilla.gnome.org/show_bug.cgi?id=658725
-rw-r--r-- | rest/sha1.c | 70 |
1 files changed, 7 insertions, 63 deletions
diff --git a/rest/sha1.c b/rest/sha1.c index b2f4f0b..70a61c0 100644 --- a/rest/sha1.c +++ b/rest/sha1.c @@ -23,7 +23,6 @@ #include <glib.h> #include "sha1.h" -#define SHA1_BLOCK_SIZE 64 #define SHA1_LENGTH 20 /* @@ -38,71 +37,16 @@ char * hmac_sha1 (const char *key, const char *message) { - GChecksum *checksum; - char *real_key; - guchar ipad[SHA1_BLOCK_SIZE]; - guchar opad[SHA1_BLOCK_SIZE]; - guchar inner[SHA1_LENGTH]; - guchar digest[SHA1_LENGTH]; - gsize key_length, inner_length, digest_length; - int i; + GHmac *hmac; + gsize digest_length = SHA1_LENGTH; + guchar digest[digest_length]; - g_return_val_if_fail (key, NULL); - g_return_val_if_fail (message, NULL); + hmac = g_hmac_new (G_CHECKSUM_SHA1, (guchar *)key, strlen (key)); + g_hmac_update (hmac, (guchar *)message, -1); - checksum = g_checksum_new (G_CHECKSUM_SHA1); + g_hmac_get_digest (hmac, digest, &digest_length); - /* If the key is longer than the block size, hash it first */ - if (strlen (key) > SHA1_BLOCK_SIZE) { - guchar new_key[SHA1_LENGTH]; - - key_length = sizeof (new_key); - - g_checksum_update (checksum, (guchar*)key, strlen (key)); - g_checksum_get_digest (checksum, new_key, &key_length); - g_checksum_reset (checksum); - - real_key = g_memdup (new_key, key_length); - } else { - real_key = g_strdup (key); - key_length = strlen (key); - } - - /* Sanity check the length */ - g_assert (key_length <= SHA1_BLOCK_SIZE); - - /* Protect against use of the provided key by NULLing it */ - key = NULL; - - /* Stage 1 */ - memset (ipad, 0, sizeof (ipad)); - memset (opad, 0, sizeof (opad)); - - memcpy (ipad, real_key, key_length); - memcpy (opad, real_key, key_length); - - /* Stage 2 and 5 */ - for (i = 0; i < sizeof (ipad); i++) { - ipad[i] ^= 0x36; - opad[i] ^= 0x5C; - } - - /* Stage 3 and 4 */ - g_checksum_update (checksum, ipad, sizeof (ipad)); - g_checksum_update (checksum, (guchar*)message, strlen (message)); - inner_length = sizeof (inner); - g_checksum_get_digest (checksum, inner, &inner_length); - g_checksum_reset (checksum); - - /* Stage 6 and 7 */ - g_checksum_update (checksum, opad, sizeof (opad)); - g_checksum_update (checksum, inner, inner_length); - - digest_length = sizeof (digest); - g_checksum_get_digest (checksum, digest, &digest_length); - - g_checksum_free (checksum); - g_free (real_key); + g_hmac_unref (hmac); return g_base64_encode (digest, digest_length); } |