Merge branch 'feature/establish-an-upstream-relationship-with-ics-openvpn-codebase-#5381' into develop

1 files changed, 441 insertions, 0 deletions

diff --git a/app/openssl/crypto/modes/ccm128.c b/app/openssl/crypto/modes/ccm128.c
new file mode 100644
index 00000000..3ce11d0d
--- /dev/null
+++ b/app/openssl/crypto/modes/ccm128.c
@@ -0,0 +1,441 @@
+/* ====================================================================
+ * 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
+		ctx->nonce.u[1] = 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;
+}