Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/modes/ccm128.c

Index: openssl/crypto/modes/ccm128.c
diff --git a/openssl/crypto/modes/ccm128.c b/openssl/crypto/modes/ccm128.c
deleted file mode 100644
index c9b35e5b35e58fd0c802e5b76c2158a3c3d3771f..0000000000000000000000000000000000000000
--- a/openssl/crypto/modes/ccm128.c
+++ /dev/null
@@ -1,441 +0,0 @@
-/* ====================================================================
- * Copyright (c) 2011 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
- *    openssl-core@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 <openssl/crypto.h>
-#include "modes_lcl.h"
-#include <string.h>
-
-#ifndef MODES_DEBUG
-# ifndef NDEBUG
-#  define NDEBUG
-# endif
-#endif
-#include <assert.h>
-
-/* First you setup M and L parameters and pass the key schedule.
- * This is called once per session setup... */
-void CRYPTO_ccm128_init(CCM128_CONTEXT *ctx,
-	unsigned int M,unsigned int L,void *key,block128_f block)
-{
-	memset(ctx->nonce.c,0,sizeof(ctx->nonce.c));
-	ctx->nonce.c[0] = ((u8)(L-1)&7) | (u8)(((M-2)/2)&7)<<3;
-	ctx->blocks = 0;
-	ctx->block = block;
-	ctx->key = key;
-}
-
-/* !!! Following interfaces are to be called *once* per packet !!! */
-
-/* Then you setup per-message nonce and pass the length of the message */
-int CRYPTO_ccm128_setiv(CCM128_CONTEXT *ctx,
-	const unsigned char *nonce,size_t nlen,size_t mlen)
-{
-	unsigned int L = ctx->nonce.c[0]&7;	/* the L parameter */
-
-	if (nlen<(14-L)) return -1;		/* nonce is too short */
-
-	if (sizeof(mlen)==8 && L>=3) {
-		ctx->nonce.c[8]  = (u8)(mlen>>(56%(sizeof(mlen)*8)));
-		ctx->nonce.c[9]  = (u8)(mlen>>(48%(sizeof(mlen)*8)));
-		ctx->nonce.c[10] = (u8)(mlen>>(40%(sizeof(mlen)*8)));
-		ctx->nonce.c[11] = (u8)(mlen>>(32%(sizeof(mlen)*8)));
-	}
-	else
-		*(u32*)(&ctx->nonce.c[8]) = 0;
-
-	ctx->nonce.c[12] = (u8)(mlen>>24);
-	ctx->nonce.c[13] = (u8)(mlen>>16);
-	ctx->nonce.c[14] = (u8)(mlen>>8);
-	ctx->nonce.c[15] = (u8)mlen;
-
-	ctx->nonce.c[0] &= ~0x40;	/* clear Adata flag */
-	memcpy(&ctx->nonce.c[1],nonce,14-L);
-
-	return 0;
-}
-
-/* Then you pass additional authentication data, this is optional */
-void CRYPTO_ccm128_aad(CCM128_CONTEXT *ctx,
-	const unsigned char *aad,size_t alen)
-{	unsigned int i;
-	block128_f block = ctx->block;
-
-	if (alen==0) return;
-
-	ctx->nonce.c[0] |= 0x40;	/* set Adata flag */
-	(*block)(ctx->nonce.c,ctx->cmac.c,ctx->key),
-	ctx->blocks++;
-
-	if (alen<(0x10000-0x100)) {
-		ctx->cmac.c[0] ^= (u8)(alen>>8);
-		ctx->cmac.c[1] ^= (u8)alen;
-		i=2;
-	}
-	else if (sizeof(alen)==8 && alen>=(size_t)1<<(32%(sizeof(alen)*8))) {
-		ctx->cmac.c[0] ^= 0xFF;
-		ctx->cmac.c[1] ^= 0xFF;
-		ctx->cmac.c[2] ^= (u8)(alen>>(56%(sizeof(alen)*8)));
-		ctx->cmac.c[3] ^= (u8)(alen>>(48%(sizeof(alen)*8)));
-		ctx->cmac.c[4] ^= (u8)(alen>>(40%(sizeof(alen)*8)));
-		ctx->cmac.c[5] ^= (u8)(alen>>(32%(sizeof(alen)*8)));
-		ctx->cmac.c[6] ^= (u8)(alen>>24);
-		ctx->cmac.c[7] ^= (u8)(alen>>16);
-		ctx->cmac.c[8] ^= (u8)(alen>>8);
-		ctx->cmac.c[9] ^= (u8)alen;
-		i=10;
-	}
-	else {
-		ctx->cmac.c[0] ^= 0xFF;
-		ctx->cmac.c[1] ^= 0xFE;
-		ctx->cmac.c[2] ^= (u8)(alen>>24);
-		ctx->cmac.c[3] ^= (u8)(alen>>16);
-		ctx->cmac.c[4] ^= (u8)(alen>>8);
-		ctx->cmac.c[5] ^= (u8)alen;
-		i=6;
-	}
-
-	do {
-		for(;i<16 && alen;++i,++aad,--alen)
-			ctx->cmac.c[i] ^= *aad;
-		(*block)(ctx->cmac.c,ctx->cmac.c,ctx->key),
-		ctx->blocks++;
-		i=0;
-	} while (alen);
-}
-
-/* Finally you encrypt or decrypt the message */
-
-/* counter part of nonce may not be larger than L*8 bits,
- * L is not larger than 8, therefore 64-bit counter... */
-static void ctr64_inc(unsigned char *counter) {
-	unsigned int n=8;
-	u8  c;
-
-	counter += 8;
-	do {
-		--n;
-		c = counter[n];
-		++c;
-		counter[n] = c;
-		if (c) return;
-	} while (n);
-}
-
-int CRYPTO_ccm128_encrypt(CCM128_CONTEXT *ctx,
-	const unsigned char *inp, unsigned char *out,
-	size_t len)
-{
-	size_t		n;
-	unsigned int	i,L;
-	unsigned char	flags0	= ctx->nonce.c[0];
-	block128_f	block	= ctx->block;
-	void *		key	= ctx->key;
-	union { u64 u[2]; u8 c[16]; } scratch;
-
-	if (!(flags0&0x40))
-		(*block)(ctx->nonce.c,ctx->cmac.c,key),
-		ctx->blocks++;
-
-	ctx->nonce.c[0] = L = flags0&7;
-	for (n=0,i=15-L;i<15;++i) {
-		n |= ctx->nonce.c[i];
-		ctx->nonce.c[i]=0;
-		n <<= 8;
-	}
-	n |= ctx->nonce.c[15];	/* reconstructed length */
-	ctx->nonce.c[15]=1;
-
-	if (n!=len) return -1;	/* length mismatch */
-
-	ctx->blocks += ((len+15)>>3)|1;
-	if (ctx->blocks > (U64(1)<<61))	return -2; /* too much data */
-
-	while (len>=16) {
-#if defined(STRICT_ALIGNMENT)
-		union { u64 u[2]; u8 c[16]; } temp;
-
-		memcpy (temp.c,inp,16);
-		ctx->cmac.u[0] ^= temp.u[0];
-		ctx->cmac.u[1] ^= temp.u[1];
-#else
-		ctx->cmac.u[0] ^= ((u64*)inp)[0];
-		ctx->cmac.u[1] ^= ((u64*)inp)[1];
-#endif
-		(*block)(ctx->cmac.c,ctx->cmac.c,key);
-		(*block)(ctx->nonce.c,scratch.c,key);
-		ctr64_inc(ctx->nonce.c);
-#if defined(STRICT_ALIGNMENT)
-		temp.u[0] ^= scratch.u[0];
-		temp.u[1] ^= scratch.u[1];
-		memcpy(out,temp.c,16);
-#else
-		((u64*)out)[0] = scratch.u[0]^((u64*)inp)[0];
-		((u64*)out)[1] = scratch.u[1]^((u64*)inp)[1];
-#endif
-		inp += 16;
-		out += 16;
-		len -= 16;
-	}
-
-	if (len) {
-		for (i=0; i<len; ++i) ctx->cmac.c[i] ^= inp[i];
-		(*block)(ctx->cmac.c,ctx->cmac.c,key);
-		(*block)(ctx->nonce.c,scratch.c,key);
-		for (i=0; i<len; ++i) out[i] = scratch.c[i]^inp[i];
-	}
-
-	for (i=15-L;i<16;++i)
-		ctx->nonce.c[i]=0;
-
-	(*block)(ctx->nonce.c,scratch.c,key);
-	ctx->cmac.u[0] ^= scratch.u[0];
-	ctx->cmac.u[1] ^= scratch.u[1];
-
-	ctx->nonce.c[0] = flags0;
-
-	return 0;
-}
-
-int CRYPTO_ccm128_decrypt(CCM128_CONTEXT *ctx,
-	const unsigned char *inp, unsigned char *out,
-	size_t len)
-{
-	size_t		n;
-	unsigned int	i,L;
-	unsigned char	flags0	= ctx->nonce.c[0];
-	block128_f	block	= ctx->block;
-	void *		key	= ctx->key;
-	union { u64 u[2]; u8 c[16]; } scratch;
-
-	if (!(flags0&0x40))
-		(*block)(ctx->nonce.c,ctx->cmac.c,key);
-
-	ctx->nonce.c[0] = L = flags0&7;
-	for (n=0,i=15-L;i<15;++i) {
-		n |= ctx->nonce.c[i];
-		ctx->nonce.c[i]=0;
-		n <<= 8;
-	}
-	n |= ctx->nonce.c[15];	/* reconstructed length */
-	ctx->nonce.c[15]=1;
-
-	if (n!=len) return -1;
-
-	while (len>=16) {
-#if defined(STRICT_ALIGNMENT)
-		union { u64 u[2]; u8 c[16]; } temp;
-#endif
-		(*block)(ctx->nonce.c,scratch.c,key);
-		ctr64_inc(ctx->nonce.c);
-#if defined(STRICT_ALIGNMENT)
-		memcpy (temp.c,inp,16);
-		ctx->cmac.u[0] ^= (scratch.u[0] ^= temp.u[0]);
-		ctx->cmac.u[1] ^= (scratch.u[1] ^= temp.u[1]);
-		memcpy (out,scratch.c,16);
-#else
-		ctx->cmac.u[0] ^= (((u64*)out)[0] = scratch.u[0]^((u64*)inp)[0]);
-		ctx->cmac.u[1] ^= (((u64*)out)[1] = scratch.u[1]^((u64*)inp)[1]);
-#endif
-		(*block)(ctx->cmac.c,ctx->cmac.c,key);
-
-		inp += 16;
-		out += 16;
-		len -= 16;
-	}
-
-	if (len) {
-		(*block)(ctx->nonce.c,scratch.c,key);
-		for (i=0; i<len; ++i)
-			ctx->cmac.c[i] ^= (out[i] = scratch.c[i]^inp[i]);
-		(*block)(ctx->cmac.c,ctx->cmac.c,key);
-	}
-
-	for (i=15-L;i<16;++i)
-		ctx->nonce.c[i]=0;
-
-	(*block)(ctx->nonce.c,scratch.c,key);
-	ctx->cmac.u[0] ^= scratch.u[0];
-	ctx->cmac.u[1] ^= scratch.u[1];
-
-	ctx->nonce.c[0] = flags0;
-
-	return 0;
-}
-
-static void ctr64_add (unsigned char *counter,size_t inc)
-{	size_t n=8, val=0;
-
-	counter += 8;
-	do {
-		--n;
-		val += counter[n] + (inc&0xff);
-		counter[n] = (unsigned char)val;
-		val >>= 8;	/* carry bit */
-		inc >>= 8;
-	} while(n && (inc || val));
-}
-
-int CRYPTO_ccm128_encrypt_ccm64(CCM128_CONTEXT *ctx,
-	const unsigned char *inp, unsigned char *out,
-	size_t len,ccm128_f stream)
-{
-	size_t		n;
-	unsigned int	i,L;
-	unsigned char	flags0	= ctx->nonce.c[0];
-	block128_f	block	= ctx->block;
-	void *		key	= ctx->key;
-	union { u64 u[2]; u8 c[16]; } scratch;
-
-	if (!(flags0&0x40))
-		(*block)(ctx->nonce.c,ctx->cmac.c,key),
-		ctx->blocks++;
-
-	ctx->nonce.c[0] = L = flags0&7;
-	for (n=0,i=15-L;i<15;++i) {
-		n |= ctx->nonce.c[i];
-		ctx->nonce.c[i]=0;
-		n <<= 8;
-	}
-	n |= ctx->nonce.c[15];	/* reconstructed length */
-	ctx->nonce.c[15]=1;
-
-	if (n!=len) return -1;	/* length mismatch */
-
-	ctx->blocks += ((len+15)>>3)|1;
-	if (ctx->blocks > (U64(1)<<61))	return -2; /* too much data */
-
-	if ((n=len/16)) {
-		(*stream)(inp,out,n,key,ctx->nonce.c,ctx->cmac.c);
-		n   *= 16;
-		inp += n;
-		out += n;
-		len -= n;
-		if (len) ctr64_add(ctx->nonce.c,n/16);
-	}
-
-	if (len) {
-		for (i=0; i<len; ++i) ctx->cmac.c[i] ^= inp[i];
-		(*block)(ctx->cmac.c,ctx->cmac.c,key);
-		(*block)(ctx->nonce.c,scratch.c,key);
-		for (i=0; i<len; ++i) out[i] = scratch.c[i]^inp[i];
-	}
-
-	for (i=15-L;i<16;++i)
-		ctx->nonce.c[i]=0;
-
-	(*block)(ctx->nonce.c,scratch.c,key);
-	ctx->cmac.u[0] ^= scratch.u[0];
-	ctx->cmac.u[1] ^= scratch.u[1];
-
-	ctx->nonce.c[0] = flags0;
-
-	return 0;
-}
-
-int CRYPTO_ccm128_decrypt_ccm64(CCM128_CONTEXT *ctx,
-	const unsigned char *inp, unsigned char *out,
-	size_t len,ccm128_f stream)
-{
-	size_t		n;
-	unsigned int	i,L;
-	unsigned char	flags0	= ctx->nonce.c[0];
-	block128_f	block	= ctx->block;
-	void *		key	= ctx->key;
-	union { u64 u[2]; u8 c[16]; } scratch;
-
-	if (!(flags0&0x40))
-		(*block)(ctx->nonce.c,ctx->cmac.c,key);
-
-	ctx->nonce.c[0] = L = flags0&7;
-	for (n=0,i=15-L;i<15;++i) {
-		n |= ctx->nonce.c[i];
-		ctx->nonce.c[i]=0;
-		n <<= 8;
-	}
-	n |= ctx->nonce.c[15];	/* reconstructed length */
-	ctx->nonce.c[15]=1;
-
-	if (n!=len) return -1;
-
-	if ((n=len/16)) {
-		(*stream)(inp,out,n,key,ctx->nonce.c,ctx->cmac.c);
-		n   *= 16;
-		inp += n;
-		out += n;
-		len -= n;
-		if (len) ctr64_add(ctx->nonce.c,n/16);
-	}
-
-	if (len) {
-		(*block)(ctx->nonce.c,scratch.c,key);
-		for (i=0; i<len; ++i)
-			ctx->cmac.c[i] ^= (out[i] = scratch.c[i]^inp[i]);
-		(*block)(ctx->cmac.c,ctx->cmac.c,key);
-	}
-
-	for (i=15-L;i<16;++i)
-		ctx->nonce.c[i]=0;
-
-	(*block)(ctx->nonce.c,scratch.c,key);
-	ctx->cmac.u[0] ^= scratch.u[0];
-	ctx->cmac.u[1] ^= scratch.u[1];
-
-	ctx->nonce.c[0] = flags0;
-
-	return 0;
-}
-
-size_t CRYPTO_ccm128_tag(CCM128_CONTEXT *ctx,unsigned char *tag,size_t len)
-{	unsigned int M = (ctx->nonce.c[0]>>3)&7;	/* the M parameter */
-
-	M *= 2; M += 2;
-	if (len<M)	return 0;
-	memcpy(tag,ctx->cmac.c,M);
-	return M;
-}