Deleted unneeded casts of memxor arguments.

ChangeLog

 2013-04-24  Niels Möller  <nisse@lysator.liu.se>
 
+	* salsa20-crypt.c (salsa20_crypt): Deleted cast of memxor
+	argument, no longer needed.
+	* salsa20r12-crypt.c (salsa20r12_crypt): Likewise.
+	* sha3.c (sha3_absorb): Likewise.
+
 	* memxor.h: Updated prototypes. Drop include of nettle-types.h.
 
 	* memxor.c: Include nettle-types.h, for uintptr_t. Replace all

salsa20-crypt.c

@@ -61,10 +61,10 @@ salsa20_crypt(struct salsa20_ctx *ctx,
       
       if (length <= SALSA20_BLOCK_SIZE)
 	{
-	  memxor3 (c, m, (uint8_t *) x, length);
+	  memxor3 (c, m, x, length);
 	  return;
 	}
-      memxor3 (c, m, (uint8_t *) x, SALSA20_BLOCK_SIZE);
+      memxor3 (c, m, x, SALSA20_BLOCK_SIZE);
 
       length -= SALSA20_BLOCK_SIZE;
       c += SALSA20_BLOCK_SIZE;

salsa20r12-crypt.c

@@ -62,10 +62,10 @@ salsa20r12_crypt(struct salsa20_ctx *ctx,
       
       if (length <= SALSA20_BLOCK_SIZE)
 	{
-	  memxor3 (c, m, (uint8_t *) x, length);
+	  memxor3 (c, m, x, length);
 	  return;
 	}
-      memxor3 (c, m, (uint8_t *) x, SALSA20_BLOCK_SIZE);
+      memxor3 (c, m, x, SALSA20_BLOCK_SIZE);
 
       length -= SALSA20_BLOCK_SIZE;
       c += SALSA20_BLOCK_SIZE;

sha3.c

@@ -46,7 +46,7 @@ sha3_absorb (struct sha3_state *state, unsigned length, const uint8_t *data)
       *p ^= LE_READ_UINT64 (data);
   }
 #else /* !WORDS_BIGENDIAN */
-  memxor ((uint8_t *) state->a, data, length);
+  memxor (state->a, data, length);
 #endif
 
   sha3_permute (state);