1 files changed, 0 insertions, 62 deletions
diff --git a/board/cr50/dcrypto/hmac.c b/board/cr50/dcrypto/hmac.c
deleted file mode 100644
index 72d4296422..0000000000
--- a/board/cr50/dcrypto/hmac.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/* Copyright 2015 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "internal.h"
-#include "dcrypto.h"
-
-#include <stdint.h>
-
-#include "cryptoc/sha256.h"
-
-/* TODO(sukhomlinov): add support for hardware hmac. */
-static void hmac_sha256_init(LITE_HMAC_CTX *ctx, const void *key,
-			     unsigned int len)
-{
-	unsigned int i;
-
-	BUILD_ASSERT(sizeof(ctx->opad) >= SHA256_BLOCK_SIZE);
-
-	memset(&ctx->opad[0], 0, SHA256_BLOCK_SIZE);
-
-	if (len > SHA256_BLOCK_SIZE) {
-		DCRYPTO_SHA256_init(&ctx->hash, 0);
-		HASH_update(&ctx->hash, key, len);
-		memcpy(&ctx->opad[0], HASH_final(&ctx->hash),
-		       HASH_size(&ctx->hash));
-	} else {
-		memcpy(&ctx->opad[0], key, len);
-	}
-
-	for (i = 0; i < SHA256_BLOCK_SIZE; ++i)
-		ctx->opad[i] ^= 0x36;
-
-	DCRYPTO_SHA256_init(&ctx->hash, 0);
-	/* hash ipad */
-	HASH_update(&ctx->hash, ctx->opad, SHA256_BLOCK_SIZE);
-
-	for (i = 0; i < SHA256_BLOCK_SIZE; ++i)
-		ctx->opad[i] ^= (0x36 ^ 0x5c);
-}
-
-void DCRYPTO_HMAC_SHA256_init(LITE_HMAC_CTX *ctx, const void *key,
-			      unsigned int len)
-{
-	hmac_sha256_init(ctx, key, len);
-}
-
-const uint8_t *DCRYPTO_HMAC_final(LITE_HMAC_CTX *ctx)
-{
-	uint8_t digest[SHA256_DIGEST_SIZE]; /* up to SHA256 */
-
-	memcpy(digest, HASH_final(&ctx->hash),
-	       (HASH_size(&ctx->hash) <= sizeof(digest) ?
-			HASH_size(&ctx->hash) :
-			sizeof(digest)));
-	DCRYPTO_SHA256_init(&ctx->hash, 0);
-	HASH_update(&ctx->hash, ctx->opad, SHA256_BLOCK_SIZE);
-	HASH_update(&ctx->hash, digest, HASH_size(&ctx->hash));
-	always_memset(&ctx->opad[0], 0, SHA256_BLOCK_SIZE); /* wipe key */
-	return HASH_final(&ctx->hash);
-}