Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/cmac/cmac.c

Index: openssl/crypto/cmac/cmac.c
diff --git a/openssl/crypto/cmac/cmac.c b/openssl/crypto/cmac/cmac.c
deleted file mode 100644
index 8b72b096813c61c032f76270b45670f1a134b69e..0000000000000000000000000000000000000000
--- a/openssl/crypto/cmac/cmac.c
+++ /dev/null
@@ -1,308 +0,0 @@
-/* crypto/cmac/cmac.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * Copyright (c) 2010 The OpenSSL Project.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "cryptlib.h"
-#include <openssl/cmac.h>
-
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-#endif
-
-struct CMAC_CTX_st
-	{
-	/* Cipher context to use */
-	EVP_CIPHER_CTX cctx;
-	/* Keys k1 and k2 */
-	unsigned char k1[EVP_MAX_BLOCK_LENGTH];
-	unsigned char k2[EVP_MAX_BLOCK_LENGTH];
-	/* Temporary block */
-	unsigned char tbl[EVP_MAX_BLOCK_LENGTH];
-	/* Last (possibly partial) block */
-	unsigned char last_block[EVP_MAX_BLOCK_LENGTH];
-	/* Number of bytes in last block: -1 means context not initialised */
-	int nlast_block;
-	};
-
-
-/* Make temporary keys K1 and K2 */
-
-static void make_kn(unsigned char *k1, unsigned char *l, int bl)
-	{
-	int i;
-	/* Shift block to left, including carry */
-	for (i = 0; i < bl; i++)
-		{
-		k1[i] = l[i] << 1;
-		if (i < bl - 1 && l[i + 1] & 0x80)
-			k1[i] |= 1;
-		}
-	/* If MSB set fixup with R */
-	if (l[0] & 0x80)
-		k1[bl - 1] ^= bl == 16 ? 0x87 : 0x1b;
-	}
-
-CMAC_CTX *CMAC_CTX_new(void)
-	{
-	CMAC_CTX *ctx;
-	ctx = OPENSSL_malloc(sizeof(CMAC_CTX));
-	if (!ctx)
-		return NULL;
-	EVP_CIPHER_CTX_init(&ctx->cctx);
-	ctx->nlast_block = -1;
-	return ctx;
-	}
-
-void CMAC_CTX_cleanup(CMAC_CTX *ctx)
-	{
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode() && !ctx->cctx.engine)
-		{
-		FIPS_cmac_ctx_cleanup(ctx);
-		return;
-		}
-#endif
-	EVP_CIPHER_CTX_cleanup(&ctx->cctx);
-	OPENSSL_cleanse(ctx->tbl, EVP_MAX_BLOCK_LENGTH);
-	OPENSSL_cleanse(ctx->k1, EVP_MAX_BLOCK_LENGTH);
-	OPENSSL_cleanse(ctx->k2, EVP_MAX_BLOCK_LENGTH);
-	OPENSSL_cleanse(ctx->last_block, EVP_MAX_BLOCK_LENGTH);
-	ctx->nlast_block = -1;
-	}
-
-EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx)
-	{
-	return &ctx->cctx;
-	}
-
-void CMAC_CTX_free(CMAC_CTX *ctx)
-	{
-	CMAC_CTX_cleanup(ctx);
-	OPENSSL_free(ctx);
-	}
-
-int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in)
-	{
-	int bl;
-	if (in->nlast_block == -1)
-		return 0;
-	if (!EVP_CIPHER_CTX_copy(&out->cctx, &in->cctx))
-		return 0;
-	bl = EVP_CIPHER_CTX_block_size(&in->cctx);
-	memcpy(out->k1, in->k1, bl);
-	memcpy(out->k2, in->k2, bl);
-	memcpy(out->tbl, in->tbl, bl);
-	memcpy(out->last_block, in->last_block, bl);
-	out->nlast_block = in->nlast_block;
-	return 1;
-	}
-
-int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen, 
-			const EVP_CIPHER *cipher, ENGINE *impl)
-	{
-	static unsigned char zero_iv[EVP_MAX_BLOCK_LENGTH];
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode())
-		{
-		/* If we have an ENGINE need to allow non FIPS */
-		if ((impl || ctx->cctx.engine)
-			&& !(ctx->cctx.flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW))
-
-			{
-			EVPerr(EVP_F_CMAC_INIT, EVP_R_DISABLED_FOR_FIPS);
-			return 0;
-			}
-		/* Other algorithm blocking will be done in FIPS_cmac_init,
-		 * via FIPS_cipherinit().
-		 */
-		if (!impl && !ctx->cctx.engine)
-			return FIPS_cmac_init(ctx, key, keylen, cipher, NULL);
-		}
-#endif
-	/* All zeros means restart */
-	if (!key && !cipher && !impl && keylen == 0)
-		{
-		/* Not initialised */
-		if (ctx->nlast_block == -1)
-			return 0;
-		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
-			return 0;
-		memset(ctx->tbl, 0, EVP_CIPHER_CTX_block_size(&ctx->cctx));
-		ctx->nlast_block = 0;
-		return 1;
-		}
-	/* Initialiase context */
-	if (cipher && !EVP_EncryptInit_ex(&ctx->cctx, cipher, impl, NULL, NULL))
-		return 0;
-	/* Non-NULL key means initialisation complete */
-	if (key)
-		{
-		int bl;
-		if (!EVP_CIPHER_CTX_cipher(&ctx->cctx))
-			return 0;
-		if (!EVP_CIPHER_CTX_set_key_length(&ctx->cctx, keylen))
-			return 0;
-		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, key, zero_iv))
-			return 0;
-		bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
-		if (!EVP_Cipher(&ctx->cctx, ctx->tbl, zero_iv, bl))
-			return 0;
-		make_kn(ctx->k1, ctx->tbl, bl);
-		make_kn(ctx->k2, ctx->k1, bl);
-		OPENSSL_cleanse(ctx->tbl, bl);
-		/* Reset context again ready for first data block */
-		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
-			return 0;
-		/* Zero tbl so resume works */
-		memset(ctx->tbl, 0, bl);
-		ctx->nlast_block = 0;
-		}
-	return 1;
-	}
-
-int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen)
-	{
-	const unsigned char *data = in;
-	size_t bl;
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode() && !ctx->cctx.engine)
-		return FIPS_cmac_update(ctx, in, dlen);
-#endif
-	if (ctx->nlast_block == -1)
-		return 0;
-	if (dlen == 0)
-		return 1;
-	bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
-	/* Copy into partial block if we need to */
-	if (ctx->nlast_block > 0)
-		{
-		size_t nleft;
-		nleft = bl - ctx->nlast_block;
-		if (dlen < nleft)
-			nleft = dlen;
-		memcpy(ctx->last_block + ctx->nlast_block, data, nleft);
-		dlen -= nleft;
-		ctx->nlast_block += nleft;
-		/* If no more to process return */
-		if (dlen == 0)
-			return 1;
-		data += nleft;
-		/* Else not final block so encrypt it */
-		if (!EVP_Cipher(&ctx->cctx, ctx->tbl, ctx->last_block,bl))
-			return 0;
-		}
-	/* Encrypt all but one of the complete blocks left */
-	while(dlen > bl)
-		{
-		if (!EVP_Cipher(&ctx->cctx, ctx->tbl, data, bl))
-			return 0;
-		dlen -= bl;
-		data += bl;
-		}
-	/* Copy any data left to last block buffer */
-	memcpy(ctx->last_block, data, dlen);
-	ctx->nlast_block = dlen;
-	return 1;
-
-	}
-
-int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen)
-	{
-	int i, bl, lb;
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode() && !ctx->cctx.engine)
-		return FIPS_cmac_final(ctx, out, poutlen);
-#endif
-	if (ctx->nlast_block == -1)
-		return 0;
-	bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
-	*poutlen = (size_t)bl;
-	if (!out)
-		return 1;
-	lb = ctx->nlast_block;
-	/* Is last block complete? */
-	if (lb == bl)
-		{
-		for (i = 0; i < bl; i++)
-			out[i] = ctx->last_block[i] ^ ctx->k1[i];
-		}
-	else
-		{
-		ctx->last_block[lb] = 0x80;
-		if (bl - lb > 1)
-			memset(ctx->last_block + lb + 1, 0, bl - lb - 1);
-		for (i = 0; i < bl; i++)
-			out[i] = ctx->last_block[i] ^ ctx->k2[i];
-		}
-	if (!EVP_Cipher(&ctx->cctx, out, out, bl))
-		{
-		OPENSSL_cleanse(out, bl);	
-		return 0;
-		}
-	return 1;
-	}
-
-int CMAC_resume(CMAC_CTX *ctx)
-	{
-	if (ctx->nlast_block == -1)
-		return 0;
-	/* The buffer "tbl" containes the last fully encrypted block
-	 * which is the last IV (or all zeroes if no last encrypted block).
-	 * The last block has not been modified since CMAC_final().
-	 * So reinitliasing using the last decrypted block will allow
-	 * CMAC to continue after calling CMAC_Final(). 
-	 */
-	return EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, ctx->tbl);
-	}