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tls 1.3 init

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Zhi Guan
2021-07-28 16:32:10 +08:00
parent ce7dd7fccf
commit 62d1899760
66 changed files with 3080 additions and 18101 deletions
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127
src/sm4_cbc.c
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@@ -1,127 +0,0 @@
/*
* Copyright (c) 2021 - 2021 The GmSSL 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 GmSSL Project.
* (http://gmssl.org/)"
*
* 4. The name "GmSSL Project" must not be used to endorse or promote
* products derived from this software without prior written
* permission. For written permission, please contact
* guanzhi1980@gmail.com.
*
* 5. Products derived from this software may not be called "GmSSL"
* nor may "GmSSL" appear in their names without prior written
* permission of the GmSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the GmSSL Project
* (http://gmssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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 <gmssl/sm4.h>
#include <gmssl/error.h>
#include "mem.h"
void sm4_cbc_encrypt(const SM4_KEY *key, const uint8_t iv[16],
const uint8_t *in, size_t nblocks, uint8_t *out)
{
while (nblocks--) {
gmssl_memxor(out, in, iv, 16);
sm4_encrypt(key, out, out);
iv = out;
in += 16;
out += 16;
}
}
void sm4_cbc_decrypt(const SM4_KEY *key, const uint8_t iv[16],
const uint8_t *in, size_t nblocks, uint8_t *out)
{
while (nblocks--) {
sm4_decrypt(key, in, out);
memxor(out, iv, 16);
iv = in;
in += 16;
out += 16;
}
}
int sm4_cbc_padding_encrypt(const SM4_KEY *key, const uint8_t iv[16],
const uint8_t *in, size_t inlen,
uint8_t *out, size_t *outlen)
{
uint8_t block[16];
size_t rem = inlen % 16;
int padding = 16 - rem;
if (in) {
memcpy(block, in + inlen - rem, rem);
}
memset(block + rem, padding, padding);
if (inlen/16) {
sm4_cbc_encrypt(key, iv, in, inlen/16, out);
out += inlen - rem;
iv = out - 16;
}
sm4_cbc_encrypt(key, iv, block, 1, out);
*outlen = inlen - rem + 16;
return 1;
}
int sm4_cbc_padding_decrypt(const SM4_KEY *key, const uint8_t iv[16],
const uint8_t *in, size_t inlen,
uint8_t *out, size_t *outlen)
{
uint8_t block[16];
int padding;
if (inlen == 0) {
error_print("warning: input lenght = 0");
return 0;
}
if (inlen%16 != 0 || inlen < 16) {
error_print("invalid cbc ciphertext length");
return -1;
}
if (inlen > 16) {
sm4_cbc_decrypt(key, iv, in, inlen/16 - 1, out);
iv = in + inlen - 32;
}
sm4_cbc_decrypt(key, iv, in + inlen - 16, 1, block);
padding = block[15];
if (padding < 1 || padding > 16) {
error_print();
return -1;
}
memcpy(out + inlen - 16, block, 16 - padding);
*outlen = inlen - padding;
return 1;
}