Adapted umac code to use new aes128 interface.

ChangeLog

+2013-08-07  Niels Möller  <nisse@lysator.liu.se>
+
+	* umac.h (_UMAC_STATE): Use struct aes128_ctx, not aes_ctx.
+	* umac-set-key.c (umac_kdf, _umac_set_key): Use aes128 interface.
+	* umac32.c (umac32_digest): Likewise.
+	* umac64.c (umac64_digest): Likewise.
+	* umac96.c (umac96_digest): Likewise.
+	* umac128.c (umac128_digest): Likewise.
+
 2013-06-25  Niels Möller  <nisse@lysator.liu.se>
 
 	* aes-meta.c: Deleted file.

umac-set-key.c

@@ -32,7 +32,7 @@
 #include "macros.h"
 
 static void
-umac_kdf (struct aes_ctx *aes, unsigned index, unsigned length, uint8_t *dst)
+umac_kdf (struct aes128_ctx *aes, unsigned index, unsigned length, uint8_t *dst)
 {
   uint8_t block[AES_BLOCK_SIZE];
   uint64_t count;
@@ -41,12 +41,12 @@ umac_kdf (struct aes_ctx *aes, unsigned index, unsigned length, uint8_t *dst)
        length -= AES_BLOCK_SIZE, dst += AES_BLOCK_SIZE, count++)
     {
       WRITE_UINT64 (block + 8, count);
-      aes_encrypt (aes, AES_BLOCK_SIZE, dst, block);
+      aes128_encrypt (aes, AES_BLOCK_SIZE, dst, block);
     }
   if (length > 0)
     {
       WRITE_UINT64 (block + 8, count);
-      aes_encrypt (aes, AES_BLOCK_SIZE, block, block);
+      aes128_encrypt (aes, AES_BLOCK_SIZE, block, block);
       memcpy (dst, block, length);
     }
 }
@@ -71,12 +71,12 @@ umac_kdf (struct aes_ctx *aes, unsigned index, unsigned length, uint8_t *dst)
 void
 _umac_set_key (uint32_t *l1_key, uint32_t *l2_key,
 	       uint64_t *l3_key1, uint32_t *l3_key2,
-	       struct aes_ctx *aes, const uint8_t *key, unsigned n)
+	       struct aes128_ctx *aes, const uint8_t *key, unsigned n)
 {
   unsigned size;
   uint8_t buffer[UMAC_KEY_SIZE];
 
-  aes_set_encrypt_key (aes, UMAC_KEY_SIZE, key);
+  aes128_set_encrypt_key (aes, key);
 
   size = UMAC_DATA_SIZE / 4 + 4*(n-1);
   umac_kdf (aes, 1, size * sizeof(uint32_t), (uint8_t *) l1_key);
@@ -94,5 +94,5 @@ _umac_set_key (uint32_t *l1_key, uint32_t *l2_key,
   umac_kdf (aes, 4, n * sizeof(uint32_t), (uint8_t *) l3_key2);
 
   umac_kdf (aes, 0, UMAC_KEY_SIZE, buffer);
-  aes_set_encrypt_key (aes, UMAC_KEY_SIZE, buffer);
+  aes128_set_encrypt_key (aes, buffer);
 }

umac.h

@@ -61,7 +61,7 @@ extern "C" {
 #include "nettle-types.h"
 #include "aes.h"
 
-#define UMAC_KEY_SIZE 16
+#define UMAC_KEY_SIZE AES128_KEY_SIZE
 #define UMAC32_DIGEST_SIZE 4
 #define UMAC64_DIGEST_SIZE 8
 #define UMAC96_DIGEST_SIZE 12
@@ -76,7 +76,7 @@ extern "C" {
   uint64_t l3_key1[8*(n)];				\
   uint32_t l3_key2[(n)];				\
   /* AES cipher for encrypting the nonce */		\
-  struct aes_ctx pdf_key;				\
+  struct aes128_ctx pdf_key;				\
   /* The l2_state consists of 2*n uint64_t, for poly64	\
      and poly128 hashing, followed by n additional	\
      uint64_t used as an input buffer. */		\
@@ -192,7 +192,7 @@ umac128_digest (struct umac128_ctx *ctx,
 void
 _umac_set_key (uint32_t *l1_key, uint32_t *l2_key,
 	       uint64_t *l3_key1, uint32_t *l3_key2,
-	       struct aes_ctx *pad, const uint8_t *key, unsigned n);
+	       struct aes128_ctx *pad, const uint8_t *key, unsigned n);
 
 uint64_t
 _umac_nh (const uint32_t *key, unsigned length, const uint8_t *msg);

umac128.c

@@ -103,7 +103,7 @@ umac128_digest (struct umac128_ctx *ctx,
     }
   assert (ctx->count > 0);
 
-  aes_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
+  aes128_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
 		  (uint8_t *) tag, ctx->nonce);
 
   INCREMENT (ctx->nonce_length, ctx->nonce);

umac32.c

@@ -100,7 +100,7 @@ umac32_digest (struct umac32_ctx *ctx,
   assert (ctx->count > 0);
   if ( !(ctx->nonce_low & _UMAC_NONCE_CACHED))
     {
-      aes_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
+      aes128_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
 		      (uint8_t *) ctx->pad_cache, ctx->nonce);
       ctx->nonce_low |= _UMAC_NONCE_CACHED;
     }

umac64.c

@@ -103,7 +103,7 @@ umac64_digest (struct umac64_ctx *ctx,
   assert (ctx->count > 0);
   if ( !(ctx->nonce_low & _UMAC_NONCE_CACHED))
     {
-      aes_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
+      aes128_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
 		      (uint8_t *) ctx->pad_cache, ctx->nonce);
       ctx->nonce_low |= _UMAC_NONCE_CACHED;
     }

umac96.c

@@ -101,7 +101,7 @@ umac96_digest (struct umac96_ctx *ctx,
     }
   assert (ctx->count > 0);
 
-  aes_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
+  aes128_encrypt (&ctx->pdf_key, AES_BLOCK_SIZE,
 		  (uint8_t *) tag, ctx->nonce);
 
   INCREMENT (ctx->nonce_length, ctx->nonce);