X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Futil%2Fcrypto_hash.c;h=af492e15e021ff5d861d7f26df91d561308cbe7c;hb=94f01bdd2fda575769f01f8072689fa6936af8f4;hp=60104b604263a2b0a6b95b20618e66cd379b9a6d;hpb=7db4f64461a77f19bb39f1b84d26f96e6acf40ab;p=oweals%2Fgnunet.git

diff --git a/src/util/crypto_hash.c b/src/util/crypto_hash.c
index 60104b604..af492e15e 100644
--- a/src/util/crypto_hash.c
+++ b/src/util/crypto_hash.c
@@ -63,36 +63,6 @@ RORu64 (unsigned long long x, unsigned long long y)
   return (x >> y) | (x << (64 - y));
 }
 
-const unsigned long long sha512_K[80] = {
-  0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
-  0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
-  0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
-  0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
-  0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
-  0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
-  0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
-  0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
-  0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
-  0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
-  0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
-  0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
-  0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
-  0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
-  0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
-  0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
-  0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
-  0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
-  0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
-  0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
-  0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
-  0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
-  0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
-  0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
-  0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
-  0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
-  0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
-};
-
 #define e0(x)       (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39))
 #define e1(x)       (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41))
 #define s0(x)       (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7))
@@ -143,6 +113,36 @@ const unsigned long long sha512_K[80] = {
 static void
 sha512_transform (unsigned long long *state, const unsigned char *input)
 {
+  static const unsigned long long sha512_K[80] = {
+    0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
+    0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+    0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
+    0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+    0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
+    0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+    0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
+    0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+    0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
+    0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+    0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
+    0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+    0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
+    0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+    0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
+    0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+    0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
+    0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+    0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
+    0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+    0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
+    0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+    0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
+    0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+    0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
+    0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+    0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
+  };
+  
   unsigned long long a, b, c, d, e, f, g, h, t1, t2;
   unsigned long long W[80];
   unsigned long long t0;
@@ -561,11 +561,6 @@ GNUNET_CRYPTO_hash_file_cancel (struct GNUNET_CRYPTO_FileHashContext *fhc)
 
 /* ***************** binary-ASCII encoding *************** */
 
-/**
- * 32 characters for encoding (GNUNET_CRYPTO_hash => 32 characters)
- */
-static char *encTable__ = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
-
 static unsigned int
 getValue__ (unsigned char a)
 {
@@ -591,6 +586,10 @@ void
 GNUNET_CRYPTO_hash_to_enc (const GNUNET_HashCode * block,
                            struct GNUNET_CRYPTO_HashAsciiEncoded *result)
 {
+  /**
+   * 32 characters for encoding (GNUNET_CRYPTO_hash => 32 characters)
+   */
+  static char *encTable__ = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
   unsigned int wpos;
   unsigned int rpos;
   unsigned int bits;
@@ -669,8 +668,10 @@ GNUNET_CRYPTO_hash_from_string (const char *enc, GNUNET_HashCode * result)
  * fast, not involve bits[0] or bits[4] (they're used elsewhere), and be
  * somewhat consistent. And of course, the result should be a positive
  * number.
- *
- * @returns a positive number which is a measure for
+ * 
+ * @param a some hash code
+ * @param b some hash code
+ * @return a positive number which is a measure for
  *  hashcode proximity.
  */
 unsigned int
@@ -688,7 +689,7 @@ GNUNET_CRYPTO_hash_create_random (enum GNUNET_CRYPTO_Quality mode,
 {
   int i;
   for (i = (sizeof (GNUNET_HashCode) / sizeof (uint32_t)) - 1; i >= 0; i--)
-    result->bits[i] = GNUNET_CRYPTO_random_u32 (mode, (uint32_t) - 1);
+    result->bits[i] = GNUNET_CRYPTO_random_u32 (mode, UINT32_MAX);
 }
 
 void
@@ -807,4 +808,43 @@ GNUNET_CRYPTO_hash_xorcmp (const GNUNET_HashCode * h1,
   return 0;
 }
 
+
+/**
+ * Calculate HMAC of a message (RFC 2104)
+ *
+ * @param key secret key
+ * @param plaintext input plaintext
+ * @param plaintext_len length of plaintext
+ * @param hmac where to store the hmac
+ */
+void 
+GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AesSessionKey *key,
+		    const void *plaintext,
+		    size_t plaintext_len,
+		    GNUNET_HashCode *hmac)
+{
+  GNUNET_HashCode kh;
+  GNUNET_HashCode ipad;
+  GNUNET_HashCode opad;
+  GNUNET_HashCode him;
+  struct sha512_ctx sctx;
+
+  memset (&kh, 0, sizeof (kh));
+  GNUNET_assert (sizeof (GNUNET_HashCode) > sizeof (struct GNUNET_CRYPTO_AesSessionKey));
+  memcpy (&kh, key, sizeof (struct GNUNET_CRYPTO_AesSessionKey));				
+  memset (&ipad, 0x5c, sizeof (ipad));
+  memset (&opad, 0x36, sizeof (opad));
+  GNUNET_CRYPTO_hash_xor (&ipad, &kh, &ipad);
+  GNUNET_CRYPTO_hash_xor (&opad, &kh, &opad);
+  sha512_init (&sctx);
+  sha512_update (&sctx, (const unsigned char*) &ipad, sizeof (ipad));
+  sha512_update (&sctx, plaintext, plaintext_len);
+  sha512_final (&sctx, (unsigned char*) &him);
+  sha512_init (&sctx);
+  sha512_update (&sctx, (const unsigned char*) &opad, sizeof (opad));
+  sha512_update (&sctx, (const unsigned char*) &him, sizeof (him));
+  sha512_final (&sctx, (unsigned char*) hmac);
+}
+
+
 /* end of crypto_hash.c */