Add HMAC-SHA224 (but it does not work yet!)

Unit Tests for HMAC-SHA224 not passed

lib/sha256.c

@@ -392,6 +392,45 @@ sha256_hmac_init(sha256_hmac_context *ctx, const void *key, size_t keylen)
   }
 }
 
+void sha224_hmac_init(sha224_hmac_context *ctx, const void *key, size_t keylen)
+{
+  sha224_init(&ctx->ctx);
+
+  ctx->finalized = 0;
+  ctx->use_hmac = 0;
+
+  if (key)
+  {
+    int i;
+    unsigned char ipad[64];
+
+    memset(ipad, 0, 64);
+    memset(ctx->opad, 0, 64);
+    if (keylen <= 64)
+    {
+      memcpy(ipad, key, keylen);
+      memcpy(ctx->opad, key, keylen);
+    }
+    else
+    {
+      sha224_hmac_context tmp_ctx;
+
+      sha224_hmac_init(&tmp_ctx, NULL, 0);
+      sha224_hmac_update(&tmp_ctx, key, keylen);
+      sha224_final(&tmp_ctx.ctx);
+      memcpy(ipad, tmp_ctx.ctx.buf, 32);
+      memcpy(ctx->opad, tmp_ctx.ctx.buf, 32);
+    }
+    for(i=0; i < 64; i++)
+    {
+      ipad[i] ^= 0x36;
+      ctx->opad[i] ^= 0x5c;
+    }
+    ctx->use_hmac = 1;
+    sha224_hmac_update(ctx, ipad, 64);
+  }
+}
+
 /* Update the message digest with the contents of BUFFER containing
    LENGTH bytes.  */
 void

lib/sha256.h

@@ -42,8 +42,8 @@ byte* sha224_final(sha224_context *ctx)
   return sha256_final(ctx);
 }
 
-/*
+/**
- *	HMAC-SHA256
+ *	HMAC-SHA256  &  HMAC-SHA224
  */
 typedef struct
 {
@@ -52,9 +52,21 @@ typedef struct
   int  use_hmac:1;
   byte opad[64];
 } sha256_hmac_context;
+typedef sha256_hmac_context sha224_hmac_context;
 
 void sha256_hmac_init(sha256_hmac_context *ctx, const void *key, size_t keylen);
+void sha224_hmac_init(sha224_hmac_context *ctx, const void *key, size_t keylen);
+
 void sha256_hmac_update(sha256_hmac_context *ctx, const void *buf, size_t buflen);
+void sha224_hmac_update(sha224_hmac_context *ctx, const void *buf, size_t buflen)
+{
+  sha256_hmac_update(ctx, buf, buflen);
+}
+
 const byte *sha256_hmac_final(sha256_hmac_context *ctx);
+const byte *sha224_hmac_final(sha224_hmac_context *ctx)
+{
+  return sha256_hmac_final(ctx);
+}
 
 #endif /* _BIRD_SHA256_H_ */

lib/sha256_test.c

@@ -171,6 +171,20 @@ get_sha256_hmac(const struct hmac_data_in in, char (*out_hash)[SHA256_HEX_SIZE])
     sprintf(*out_hash + i*2, "%02x", hash_byte[i]);
 }
 
+static void
+get_sha224_hmac(const struct hmac_data_in in, char (*out_hash)[SHA256_HEX_SIZE])
+{
+  sha224_hmac_context ctx;
+  sha224_hmac_init(&ctx, in.key, in.key_len);
+  sha224_hmac_update(&ctx, in.data, in.data_len);
+  byte *hash_byte = sha224_hmac_final(&ctx);
+
+  int i;
+  for (i = 0; i < SHA224_SIZE; i++)
+    sprintf(*out_hash + i*2, "%02x", hash_byte[i]);
+}
+
+
 static int
 t_sha256_hmac(void)
 {
@@ -303,6 +317,139 @@ t_sha256_hmac(void)
   return BT_SUCCESS;
 }
 
+
+static int
+t_sha224_hmac(void)
+{
+  struct in_out {
+    struct hmac_data_in in;
+    char out[SHA256_HEX_SIZE];
+  } in_out[] = {
+      {
+	  .in  = {
+	      .key = {
+		  0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+		  0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+	      },
+	      .key_len = 20,
+	      .data = "Hi There",
+	      .data_len = 8,
+	  },
+	  .out = "896fb1128abbdf196832107cd49df33f47b4b1169912ba4f53684b22",
+      },
+      {
+	  .in  = {
+	      .key = "Jefe",
+	      .key_len = 4,
+	      .data = "what do ya want for nothing?",
+	      .data_len = 28,
+	  },
+	  .out = "a30e01098bc6dbbf45690f3a7e9e6d0f8bbea2a39e6148008fd05e44",
+      },
+      {
+	  .in  = {
+	      .key = {
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+	      },
+	      .key_len = 20,
+	      .data = {
+		  0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+		  0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+		  0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+		  0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+		  0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+	      },
+	      .data_len = 50,
+	  },
+	  .out = "7fb3cb3588c6c1f6ffa9694d7d6ad2649365b0c1f65d69d1ec8333ea",
+      },
+      {
+	  .in  = {
+	      .key = {
+		  0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
+		  0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14,
+		  0x15, 0x16, 0x17, 0x18, 0x19,
+	      },
+	      .key_len = 25,
+	      .data = {
+		  0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+		  0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+		  0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+		  0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+		  0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+	      },
+	      .data_len = 50,
+	  },
+	  .out = "6c11506874013cac6a2abc1bb382627cec6a90d86efc012de7afec5a",
+      },
+      {
+	  .in  = {
+	      .key = {
+		  0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+		  0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	      },
+	      .key_len = 20,
+	      .data = "Test With Truncation",
+	      .data_len = 20,
+	  },
+	  .out = "0e2aea68a90c8d37c988bcdb9fca6fa8",
+      },
+      {
+	  .in  = {
+	      .key = {
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa,
+	      },
+	      .key_len = 131,
+	      .data = "Test Using Larger Than Block-Size Key - Hash Key First",
+	      .data_len = 54,
+	  },
+	  .out = "95e9a0db962095adaebe9b2d6f0dbce2d499f112f2d2b7273fa6870e",
+      },
+      {
+	  .in  = {
+	      .key = {
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+		  0xaa,
+	      },
+	      .key_len = 131,
+	      .data = "This is a test using a larger than block-size key and a larger than block-size data. The key needs to be hashed before being used by the HMAC algorithm.",
+	      .data_len = 152,
+	  },
+	  .out = "3a854166ac5d9f023f54d517d0b39dbd946770db9c2b95c9f6f565d1",
+      },
+  };
+
+  bt_assert_fn_in_out(get_sha224_hmac, in_out, NULL, "'%s'");
+
+  return BT_SUCCESS;
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -313,6 +460,7 @@ main(int argc, char *argv[])
   bt_test_suite(t_sha256_concating, "Testing concating input string to hash process via sha256_update");
 
   bt_test_suite(t_sha256_hmac, "Test Suite by RFC 4231");
+  bt_test_suite(t_sha224_hmac, "Test Suite by RFC 4231");
 
   return bt_end();
 }