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add sms4 module

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This commit is contained in:
Zhi Guan
2017-02-14 23:14:06 +08:00
parent 4e49434209
commit 01c76aa6a0
33 changed files with 3036 additions and 6 deletions
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3
crypto/evp/build.info
View File

@@ -13,7 +13,8 @@ SOURCE[../../libcrypto]=\
e_old.c pmeth_lib.c pmeth_fn.c pmeth_gn.c m_sigver.c \
e_aes_cbc_hmac_sha1.c e_aes_cbc_hmac_sha256.c e_rc4_hmac_md5.c \
e_chacha20_poly1305.c cmeth_lib.c \
m_sm3.c
m_sm3.c \
e_sms4.c e_sms4_ccm.c e_sms4_gcm.c e_sms4_ocb.c e_sms4_wrap.c e_sms4_xts.c
INCLUDE[e_aes.o]=.. ../modes
INCLUDE[e_aes_cbc_hmac_sha1.o]=../modes

21
crypto/evp/c_allc.c
View File

@@ -216,5 +216,26 @@ void openssl_add_all_ciphers_int(void)
# ifndef OPENSSL_NO_POLY1305
EVP_add_cipher(EVP_chacha20_poly1305());
# endif
#ifndef OPENSSL_NO_SMS4
EVP_add_cipher(EVP_sms4_ecb());
EVP_add_cipher(EVP_sms4_cbc());
EVP_add_cipher(EVP_sms4_cfb());
EVP_add_cipher(EVP_sms4_cfb1());
EVP_add_cipher(EVP_sms4_cfb8());
EVP_add_cipher(EVP_sms4_ofb());
EVP_add_cipher(EVP_sms4_ctr());
EVP_add_cipher(EVP_sms4_ccm());
EVP_add_cipher(EVP_sms4_gcm());
# ifndef OPENSSL_NO_OCB
EVP_add_cipher(EVP_sms4_ocb());
# endif
EVP_add_cipher(EVP_sms4_xts());
EVP_add_cipher(EVP_sms4_wrap());
EVP_add_cipher(EVP_sms4_wrap_pad());
EVP_add_cipher_alias(SN_sms4_cbc,"SMS4");
EVP_add_cipher_alias(SN_sms4_cbc,"sms4");
#endif
#endif
}

200
crypto/evp/e_sms4.c Normal file
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@@ -0,0 +1,200 @@
/* ====================================================================
* Copyright (c) 2014 - 2017 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.
* ====================================================================
*/
/*
* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include "evp_locl.h"
# include "internal/evp_int.h"
#include "../modes/modes_lcl.h"
#ifndef OPENSSL_NO_SMS4
# include <openssl/sms4.h>
typedef struct {
sms4_key_t ks;
} EVP_SMS4_KEY;
static int sms4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
if (!enc) {
if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE)
enc = 1;
else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE)
enc = 1; //encrypt key == decrypt key
}
if (enc)
sms4_set_encrypt_key(ctx->cipher_data, key);
else sms4_set_decrypt_key(ctx->cipher_data, key);
return 1;
}
IMPLEMENT_BLOCK_CIPHER(sms4, ks, sms4, EVP_SMS4_KEY, NID_sms4,
SMS4_BLOCK_SIZE, SMS4_KEY_LENGTH, SMS4_IV_LENGTH, 128, 0,
sms4_init_key, NULL, NULL, NULL, NULL)
# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
static int sms4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_KEY *sms4_key = (EVP_SMS4_KEY *)ctx->cipher_data;
if (ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) {
CRYPTO_cfb128_1_encrypt(in, out, len, &sms4_key->ks,
ctx->iv, &ctx->num, ctx->encrypt, (block128_f)sms4_encrypt);
return 1;
}
while (len >= MAXBITCHUNK) {
CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &sms4_key->ks,
ctx->iv, &ctx->num, ctx->encrypt, (block128_f)sms4_encrypt);
len -= MAXBITCHUNK;
}
if (len) {
CRYPTO_cfb128_1_encrypt(in, out, len * 8, &sms4_key->ks,
ctx->iv, &ctx->num, ctx->encrypt, (block128_f)sms4_encrypt);
}
return 1;
}
const EVP_CIPHER sms4_cfb1 = {
NID_sms4_cfb1,
SMS4_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_IV_LENGTH,
EVP_CIPH_CTR_MODE,
sms4_init_key,
sms4_cfb1_cipher,
NULL,
sizeof(EVP_SMS4_KEY),
NULL,NULL,NULL,NULL,
};
const EVP_CIPHER *EVP_sms4_cfb1(void)
{
return &sms4_cfb1;
}
static int sms4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_KEY *sms4_key = (EVP_SMS4_KEY *)ctx->cipher_data;
CRYPTO_cfb128_8_encrypt(in, out, len, &sms4_key->ks,
ctx->iv, &ctx->num, ctx->encrypt, (block128_f)sms4_encrypt);
return 1;
}
const EVP_CIPHER sms4_cfb8 = {
NID_sms4_cfb8,
SMS4_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_IV_LENGTH,
EVP_CIPH_CTR_MODE,
sms4_init_key,
sms4_cfb8_cipher,
NULL,
sizeof(EVP_SMS4_KEY),
NULL,NULL,NULL,NULL,
};
const EVP_CIPHER *EVP_sms4_cfb8(void)
{
return &sms4_cfb8;
}
static int sms4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
unsigned int num = ctx->num;
EVP_SMS4_KEY *sms4 = (EVP_SMS4_KEY *)ctx->cipher_data;
CRYPTO_ctr128_encrypt_ctr32(in, out, len, &sms4->ks, ctx->iv, ctx->buf,
&num, (ctr128_f)sms4_encrypt);
ctx->num = (size_t)num;
return 1;
}
const EVP_CIPHER sms4_ctr = {
NID_sms4_ctr,
SMS4_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_IV_LENGTH,
EVP_CIPH_CTR_MODE,
sms4_init_key,
sms4_ctr_cipher,
NULL, /* cleanup() */
sizeof(EVP_SMS4_KEY),
NULL,NULL,NULL,NULL,
};
const EVP_CIPHER *EVP_sms4_ctr(void)
{
return &sms4_ctr;
}
#endif /* OPENSSL_NO_SMS4 */

340
crypto/evp/e_sms4_ccm.c Normal file
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@@ -0,0 +1,340 @@
/* ====================================================================
* Copyright (c) 2014 - 2017 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.
* ====================================================================
*/
/*
* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include "evp_locl.h"
# include "internal/evp_int.h"
#include "../modes/modes_lcl.h"
#ifndef OPENSSL_NO_SMS4
#include <openssl/sms4.h>
typedef struct {
union {
double align;
sms4_key_t ks;
} ks; /* SMS4 key schedule to use */
int key_set; /* Set if key initialised */
int iv_set; /* Set if an iv is set */
int tag_set; /* Set if tag is valid */
int len_set; /* Set if message length set */
int L, M; /* L and M parameters from RFC3610 */
int tls_aad_len; /* TLS AAD length */
CCM128_CONTEXT ccm;
ccm128_f str;
} EVP_SMS4_CCM_CTX;
static int sms4_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,c);
switch (type) {
case EVP_CTRL_INIT:
cctx->key_set = 0;
cctx->iv_set = 0;
cctx->L = 8;
cctx->M = 12;
cctx->tag_set = 0;
cctx->len_set = 0;
cctx->tls_aad_len = -1;
return 1;
case EVP_CTRL_AEAD_TLS1_AAD:
/* Save the AAD for later use */
if (arg != EVP_AEAD_TLS1_AAD_LEN)
return 0;
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
cctx->tls_aad_len = arg;
{
uint16_t len =
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
| EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
/* Correct length for explicit IV */
len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
/* If decrypting correct for tag too */
if (!EVP_CIPHER_CTX_encrypting(c))
len -= cctx->M;
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
}
/* Extra padding: tag appended to record */
return cctx->M;
case EVP_CTRL_CCM_SET_IV_FIXED:
/* Sanity check length */
if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
return 0;
/* Just copy to first part of IV */
memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg);
return 1;
case EVP_CTRL_AEAD_SET_IVLEN:
arg = 15 - arg;
case EVP_CTRL_CCM_SET_L:
if (arg < 2 || arg > 8)
return 0;
cctx->L = arg;
return 1;
case EVP_CTRL_AEAD_SET_TAG:
if ((arg & 1) || arg < 4 || arg > 16)
return 0;
if (EVP_CIPHER_CTX_encrypting(c) && ptr)
return 0;
if (ptr) {
cctx->tag_set = 1;
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
}
cctx->M = arg;
return 1;
case EVP_CTRL_AEAD_GET_TAG:
if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set)
return 0;
if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
return 0;
cctx->tag_set = 0;
cctx->iv_set = 0;
cctx->len_set = 0;
return 1;
case EVP_CTRL_COPY:
{
EVP_CIPHER_CTX *out = ptr;
EVP_SMS4_CCM_CTX *cctx_out = EVP_C_DATA(EVP_SMS4_CCM_CTX,out);
if (cctx->ccm.key) {
if (cctx->ccm.key != &cctx->ks)
return 0;
cctx_out->ccm.key = &cctx_out->ks;
}
return 1;
}
default:
return -1;
}
}
static int sms4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,ctx);
if (!iv && !key)
return 1;
if (key)
do {
sms4_set_encrypt_key(&cctx->ks.ks, key);
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
&cctx->ks, (block128_f) sms4_encrypt);
cctx->str = NULL;
cctx->key_set = 1;
} while (0);
if (iv) {
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
cctx->iv_set = 1;
}
return 1;
}
static int sms4_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,ctx);
CCM128_CONTEXT *ccm = &cctx->ccm;
/* Encrypt/decrypt must be performed in place */
if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M))
return -1;
/* If encrypting set explicit IV from sequence number (start of AAD) */
if (EVP_CIPHER_CTX_encrypting(ctx))
memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx),
EVP_CCM_TLS_EXPLICIT_IV_LEN);
/* Get rest of IV from explicit IV */
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in,
EVP_CCM_TLS_EXPLICIT_IV_LEN);
/* Correct length value */
len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L,
len))
return -1;
/* Use saved AAD */
CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len);
/* Fix buffer to point to payload */
in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
if (EVP_CIPHER_CTX_encrypting(ctx)) {
if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
cctx->str) :
CRYPTO_ccm128_encrypt(ccm, in, out, len))
return -1;
if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M))
return -1;
return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
} else {
if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
cctx->str) :
!CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
unsigned char tag[16];
if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
if (!CRYPTO_memcmp(tag, in + len, cctx->M))
return len;
}
}
OPENSSL_cleanse(out, len);
return -1;
}
}
static int sms4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,ctx);
CCM128_CONTEXT *ccm = &cctx->ccm;
/* If not set up, return error */
if (!cctx->key_set)
return -1;
if (cctx->tls_aad_len >= 0)
return sms4_ccm_tls_cipher(ctx, out, in, len);
if (!cctx->iv_set)
return -1;
if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
return -1;
if (!out) {
if (!in) {
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
15 - cctx->L, len))
return -1;
cctx->len_set = 1;
return len;
}
/* If have AAD need message length */
if (!cctx->len_set && len)
return -1;
CRYPTO_ccm128_aad(ccm, in, len);
return len;
}
/* EVP_*Final() doesn't return any data */
if (!in)
return 0;
/* If not set length yet do it */
if (!cctx->len_set) {
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
15 - cctx->L, len))
return -1;
cctx->len_set = 1;
}
if (EVP_CIPHER_CTX_encrypting(ctx)) {
if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
cctx->str) :
CRYPTO_ccm128_encrypt(ccm, in, out, len))
return -1;
cctx->tag_set = 1;
return len;
} else {
int rv = -1;
if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
cctx->str) :
!CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
unsigned char tag[16];
if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx),
cctx->M))
rv = len;
}
}
if (rv == -1)
OPENSSL_cleanse(out, len);
cctx->iv_set = 0;
cctx->tag_set = 0;
cctx->len_set = 0;
return rv;
}
}
#define SMS4_CCM_BLOCK_SIZE 1
#define SMS4_CCM_IV_LENGTH 12
#define SMS4_CCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
| EVP_CIPH_CUSTOM_COPY \
| EVP_CIPH_FLAG_AEAD_CIPHER)
static const EVP_CIPHER sms4_ccm = {
NID_sms4_ccm,
SMS4_CCM_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_CCM_IV_LENGTH,
SMS4_CCM_FLAGS,
sms4_ccm_init_key,
sms4_ccm_cipher,
NULL,
sizeof(EVP_SMS4_CCM_CTX),
NULL, NULL, sms4_ccm_ctrl, NULL
};
const EVP_CIPHER *EVP_sms4_ccm(void) {
return &sms4_ccm;
}
#endif /* OPENSSL_NO_SMS4 */

463
crypto/evp/e_sms4_gcm.c Normal file
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@@ -0,0 +1,463 @@
/* ====================================================================
* Copyright (c) 2014 - 2017 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.
* ====================================================================
*/
/*
* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include "evp_locl.h"
# include "internal/evp_int.h"
#include "../modes/modes_lcl.h"
#ifndef OPENSSL_NO_SMS4
#include <openssl/sms4.h>
typedef struct {
union {
double align;
sms4_key_t ks;
} ks; /* SMS4 key schedule to use */
int key_set; /* Set if key initialised */
int iv_set; /* Set if an iv is set */
GCM128_CONTEXT gcm;
unsigned char *iv; /* Temporary IV store */
int ivlen; /* IV length */
int taglen;
int iv_gen; /* It is OK to generate IVs */
int tls_aad_len; /* TLS AAD length */
ctr128_f ctr;
} EVP_SMS4_GCM_CTX;
static int sms4_gcm_cleanup(EVP_CIPHER_CTX *c)
{
EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,c);
OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
OPENSSL_free(gctx->iv);
return 1;
}
/* increment counter (64-bit int) by 1 */
static void ctr64_inc(unsigned char *counter)
{
int n = 8;
unsigned char c;
do {
--n;
c = counter[n];
++c;
counter[n] = c;
if (c)
return;
} while (n);
}
static int sms4_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,c);
switch (type) {
case EVP_CTRL_INIT:
gctx->key_set = 0;
gctx->iv_set = 0;
gctx->ivlen = EVP_CIPHER_CTX_iv_length(c);
gctx->iv = EVP_CIPHER_CTX_iv_noconst(c);
gctx->taglen = -1;
gctx->iv_gen = 0;
gctx->tls_aad_len = -1;
return 1;
case EVP_CTRL_AEAD_SET_IVLEN:
if (arg <= 0)
return 0;
/* Allocate memory for IV if needed */
if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) {
if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
OPENSSL_free(gctx->iv);
gctx->iv = OPENSSL_malloc(arg);
if (gctx->iv == NULL)
return 0;
}
gctx->ivlen = arg;
return 1;
case EVP_CTRL_AEAD_SET_TAG:
if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c))
return 0;
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
gctx->taglen = arg;
return 1;
case EVP_CTRL_AEAD_GET_TAG:
if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c)
|| gctx->taglen < 0)
return 0;
memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(c), arg);
return 1;
case EVP_CTRL_GCM_SET_IV_FIXED:
/* Special case: -1 length restores whole IV */
if (arg == -1) {
memcpy(gctx->iv, ptr, gctx->ivlen);
gctx->iv_gen = 1;
return 1;
}
/*
* Fixed field must be at least 4 bytes and invocation field at least
* 8.
*/
if ((arg < 4) || (gctx->ivlen - arg) < 8)
return 0;
if (arg)
memcpy(gctx->iv, ptr, arg);
if (EVP_CIPHER_CTX_encrypting(c)
&& RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
return 0;
gctx->iv_gen = 1;
return 1;
case EVP_CTRL_GCM_IV_GEN:
if (gctx->iv_gen == 0 || gctx->key_set == 0)
return 0;
CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
if (arg <= 0 || arg > gctx->ivlen)
arg = gctx->ivlen;
memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
/*
* Invocation field will be at least 8 bytes in size and so no need
* to check wrap around or increment more than last 8 bytes.
*/
ctr64_inc(gctx->iv + gctx->ivlen - 8);
gctx->iv_set = 1;
return 1;
case EVP_CTRL_GCM_SET_IV_INV:
if (gctx->iv_gen == 0 || gctx->key_set == 0
|| EVP_CIPHER_CTX_encrypting(c))
return 0;
memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
gctx->iv_set = 1;
return 1;
case EVP_CTRL_AEAD_TLS1_AAD:
/* Save the AAD for later use */
if (arg != EVP_AEAD_TLS1_AAD_LEN)
return 0;
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
gctx->tls_aad_len = arg;
{
unsigned int len =
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
| EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
/* Correct length for explicit IV */
len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
/* If decrypting correct for tag too */
if (!EVP_CIPHER_CTX_encrypting(c))
len -= EVP_GCM_TLS_TAG_LEN;
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
}
/* Extra padding: tag appended to record */
return EVP_GCM_TLS_TAG_LEN;
case EVP_CTRL_COPY:
{
EVP_CIPHER_CTX *out = ptr;
EVP_SMS4_GCM_CTX *gctx_out = EVP_C_DATA(EVP_SMS4_GCM_CTX,out);
if (gctx->gcm.key) {
if (gctx->gcm.key != &gctx->ks)
return 0;
gctx_out->gcm.key = &gctx_out->ks;
}
if (gctx->iv == EVP_CIPHER_CTX_iv_noconst(c))
gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
else {
gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
if (gctx_out->iv == NULL)
return 0;
memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
}
return 1;
}
default:
return -1;
}
}
static int sms4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,ctx);
if (!iv && !key)
return 1;
if (key) {
do {
(void)0; /* terminate potentially open 'else' */
sms4_set_encrypt_key(&gctx->ks.ks, key);
CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
(block128_f)sms4_encrypt);
gctx->ctr = NULL;
} while (0);
/*
* If we have an iv can set it directly, otherwise use saved IV.
*/
if (iv == NULL && gctx->iv_set)
iv = gctx->iv;
if (iv) {
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
gctx->iv_set = 1;
}
gctx->key_set = 1;
} else {
/* If key set use IV, otherwise copy */
if (gctx->key_set)
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
else
memcpy(gctx->iv, iv, gctx->ivlen);
gctx->iv_set = 1;
gctx->iv_gen = 0;
}
return 1;
}
/*
* Handle TLS GCM packet format. This consists of the last portion of the IV
* followed by the payload and finally the tag. On encrypt generate IV,
* encrypt payload and write the tag. On verify retrieve IV, decrypt payload
* and verify tag.
*/
static int sms4_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,ctx);
int rv = -1;
/* Encrypt/decrypt must be performed in place */
if (out != in
|| len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
return -1;
/*
* Set IV from start of buffer or generate IV and write to start of
* buffer.
*/
if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CIPHER_CTX_encrypting(ctx) ?
EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
goto err;
/* Use saved AAD */
if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
gctx->tls_aad_len))
goto err;
/* Fix buffer and length to point to payload */
in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
if (EVP_CIPHER_CTX_encrypting(ctx)) {
/* Encrypt payload */
if (gctx->ctr) {
size_t bulk = 0;
if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
in + bulk,
out + bulk,
len - bulk, gctx->ctr))
goto err;
} else {
size_t bulk = 0;
if (CRYPTO_gcm128_encrypt(&gctx->gcm,
in + bulk, out + bulk, len - bulk))
goto err;
}
out += len;
/* Finally write tag */
CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
} else {
/* Decrypt */
if (gctx->ctr) {
size_t bulk = 0;
if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
in + bulk,
out + bulk,
len - bulk, gctx->ctr))
goto err;
} else {
size_t bulk = 0;
if (CRYPTO_gcm128_decrypt(&gctx->gcm,
in + bulk, out + bulk, len - bulk))
goto err;
}
/* Retrieve tag */
CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
EVP_GCM_TLS_TAG_LEN);
/* If tag mismatch wipe buffer */
if (CRYPTO_memcmp(EVP_CIPHER_CTX_buf_noconst(ctx), in + len,
EVP_GCM_TLS_TAG_LEN)) {
OPENSSL_cleanse(out, len);
goto err;
}
rv = len;
}
err:
gctx->iv_set = 0;
gctx->tls_aad_len = -1;
return rv;
}
static int sms4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,ctx);
/* If not set up, return error */
if (!gctx->key_set)
return -1;
if (gctx->tls_aad_len >= 0)
return sms4_gcm_tls_cipher(ctx, out, in, len);
if (!gctx->iv_set)
return -1;
if (in) {
if (out == NULL) {
if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
return -1;
} else if (EVP_CIPHER_CTX_encrypting(ctx)) {
if (gctx->ctr) {
size_t bulk = 0;
if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
in + bulk,
out + bulk,
len - bulk, gctx->ctr))
return -1;
} else {
size_t bulk = 0;
if (CRYPTO_gcm128_encrypt(&gctx->gcm,
in + bulk, out + bulk, len - bulk))
return -1;
}
} else {
if (gctx->ctr) {
size_t bulk = 0;
if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
in + bulk,
out + bulk,
len - bulk, gctx->ctr))
return -1;
} else {
size_t bulk = 0;
if (CRYPTO_gcm128_decrypt(&gctx->gcm,
in + bulk, out + bulk, len - bulk))
return -1;
}
}
return len;
} else {
if (!EVP_CIPHER_CTX_encrypting(ctx)) {
if (gctx->taglen < 0)
return -1;
if (CRYPTO_gcm128_finish(&gctx->gcm,
EVP_CIPHER_CTX_buf_noconst(ctx),
gctx->taglen) != 0)
return -1;
gctx->iv_set = 0;
return 0;
}
CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), 16);
gctx->taglen = 16;
/* Don't reuse the IV */
gctx->iv_set = 0;
return 0;
}
}
#define SMS4_GCM_BLOCK_SIZE 1
#define SMS4_GCM_IV_LENGTH 12
#define SMS4_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
| EVP_CIPH_CUSTOM_COPY \
| EVP_CIPH_FLAG_AEAD_CIPHER)
static const EVP_CIPHER sms4_gcm = {
NID_sms4_gcm,
SMS4_GCM_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_GCM_IV_LENGTH,
SMS4_GCM_FLAGS,
sms4_gcm_init_key,
sms4_gcm_cipher,
sms4_gcm_cleanup,
sizeof(EVP_SMS4_GCM_CTX),
NULL, NULL, sms4_gcm_ctrl, NULL
};
const EVP_CIPHER *EVP_sms4_gcm(void) {
return &sms4_gcm;
}
#endif /* OPENSSL_NO_SMS4 */

373
crypto/evp/e_sms4_ocb.c Normal file
View File

@@ -0,0 +1,373 @@
/* ====================================================================
* Copyright (c) 2014 - 2017 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.
* ====================================================================
*/
/*
* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include "evp_locl.h"
# include "internal/evp_int.h"
#include "../modes/modes_lcl.h"
#ifndef OPENSSL_NO_SMS4
# include <openssl/sms4.h>
# ifndef OPENSSL_NO_OCB
typedef struct {
union {
double align;
sms4_key_t ks;
} ksenc; /* SMS4 key schedule to use for encryption */
union {
double align;
sms4_key_t ks;
} ksdec; /* SMS4 key schedule to use for decryption */
int key_set; /* Set if key initialised */
int iv_set; /* Set if an iv is set */
OCB128_CONTEXT ocb;
unsigned char *iv; /* Temporary IV store */
unsigned char tag[16];
unsigned char data_buf[16]; /* Store partial data blocks */
unsigned char aad_buf[16]; /* Store partial AAD blocks */
int data_buf_len;
int aad_buf_len;
int ivlen; /* IV length */
int taglen;
} EVP_SMS4_OCB_CTX;
static int sms4_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
EVP_SMS4_OCB_CTX *octx = EVP_C_DATA(EVP_SMS4_OCB_CTX,c);
EVP_CIPHER_CTX *newc;
EVP_SMS4_OCB_CTX *new_octx;
switch (type) {
case EVP_CTRL_INIT:
octx->key_set = 0;
octx->iv_set = 0;
octx->ivlen = EVP_CIPHER_CTX_iv_length(c);
octx->iv = EVP_CIPHER_CTX_iv_noconst(c);
octx->taglen = 16;
octx->data_buf_len = 0;
octx->aad_buf_len = 0;
return 1;
case EVP_CTRL_AEAD_SET_IVLEN:
/* IV len must be 1 to 15 */
if (arg <= 0 || arg > 15)
return 0;
octx->ivlen = arg;
return 1;
case EVP_CTRL_AEAD_SET_TAG:
if (!ptr) {
/* Tag len must be 0 to 16 */
if (arg < 0 || arg > 16)
return 0;
octx->taglen = arg;
return 1;
}
if (arg != octx->taglen || EVP_CIPHER_CTX_encrypting(c))
return 0;
memcpy(octx->tag, ptr, arg);
return 1;
case EVP_CTRL_AEAD_GET_TAG:
if (arg != octx->taglen || !EVP_CIPHER_CTX_encrypting(c))
return 0;
memcpy(ptr, octx->tag, arg);
return 1;
case EVP_CTRL_COPY:
newc = (EVP_CIPHER_CTX *)ptr;
new_octx = EVP_C_DATA(EVP_SMS4_OCB_CTX,newc);
return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb,
&new_octx->ksenc.ks,
&new_octx->ksdec.ks);
default:
return -1;
}
}
static int sms4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_SMS4_OCB_CTX *octx = EVP_C_DATA(EVP_SMS4_OCB_CTX,ctx);
if (!iv && !key)
return 1;
if (key) {
do {
/*
* We set both the encrypt and decrypt key here because decrypt
* needs both. We could possibly optimise to remove setting the
* decrypt for an encryption operation.
*/
sms4_set_encrypt_key(&octx->ksenc.ks, key);
sms4_set_decrypt_key(&octx->ksdec.ks, key);
if (!CRYPTO_ocb128_init(&octx->ocb,
&octx->ksenc.ks, &octx->ksdec.ks,
(block128_f)sms4_encrypt,
(block128_f)sms4_encrypt,
NULL))
return 0;
}
while (0);
/*
* If we have an iv we can set it directly, otherwise use saved IV.
*/
if (iv == NULL && octx->iv_set)
iv = octx->iv;
if (iv) {
if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
!= 1)
return 0;
octx->iv_set = 1;
}
octx->key_set = 1;
} else {
/* If key set use IV, otherwise copy */
if (octx->key_set)
CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
else
memcpy(octx->iv, iv, octx->ivlen);
octx->iv_set = 1;
}
return 1;
}
static int sms4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
unsigned char *buf;
int *buf_len;
int written_len = 0;
size_t trailing_len;
EVP_SMS4_OCB_CTX *octx = EVP_C_DATA(EVP_SMS4_OCB_CTX,ctx);
/* If IV or Key not set then return error */
if (!octx->iv_set)
return -1;
if (!octx->key_set)
return -1;
if (in) {
/*
* Need to ensure we are only passing full blocks to low level OCB
* routines. We do it here rather than in EVP_EncryptUpdate/
* EVP_DecryptUpdate because we need to pass full blocks of AAD too
* and those routines don't support that
*/
/* Are we dealing with AAD or normal data here? */
if (out == NULL) {
buf = octx->aad_buf;
buf_len = &(octx->aad_buf_len);
} else {
buf = octx->data_buf;
buf_len = &(octx->data_buf_len);
}
/*
* If we've got a partially filled buffer from a previous call then
* use that data first
*/
if (*buf_len) {
unsigned int remaining;
remaining = 16 - (*buf_len);
if (remaining > len) {
memcpy(buf + (*buf_len), in, len);
*(buf_len) += len;
return 0;
}
memcpy(buf + (*buf_len), in, remaining);
/*
* If we get here we've filled the buffer, so process it
*/
len -= remaining;
in += remaining;
if (out == NULL) {
if (!CRYPTO_ocb128_aad(&octx->ocb, buf, 16))
return -1;
} else if (EVP_CIPHER_CTX_encrypting(ctx)) {
if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out, 16))
return -1;
} else {
if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out, 16))
return -1;
}
written_len = 16;
*buf_len = 0;
}
/* Do we have a partial block to handle at the end? */
trailing_len = len % 16;
/*
* If we've got some full blocks to handle, then process these first
*/
if (len != trailing_len) {
if (out == NULL) {
if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len))
return -1;
} else if (EVP_CIPHER_CTX_encrypting(ctx)) {
if (!CRYPTO_ocb128_encrypt
(&octx->ocb, in, out, len - trailing_len))
return -1;
} else {
if (!CRYPTO_ocb128_decrypt
(&octx->ocb, in, out, len - trailing_len))
return -1;
}
written_len += len - trailing_len;
in += len - trailing_len;
}
/* Handle any trailing partial block */
if (trailing_len) {
memcpy(buf, in, trailing_len);
*buf_len = trailing_len;
}
return written_len;
} else {
/*
* First of all empty the buffer of any partial block that we might
* have been provided - both for data and AAD
*/
if (octx->data_buf_len) {
if (EVP_CIPHER_CTX_encrypting(ctx)) {
if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out,
octx->data_buf_len))
return -1;
} else {
if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out,
octx->data_buf_len))
return -1;
}
written_len = octx->data_buf_len;
octx->data_buf_len = 0;
}
if (octx->aad_buf_len) {
if (!CRYPTO_ocb128_aad
(&octx->ocb, octx->aad_buf, octx->aad_buf_len))
return -1;
octx->aad_buf_len = 0;
}
/* If decrypting then verify */
if (!EVP_CIPHER_CTX_encrypting(ctx)) {
if (octx->taglen < 0)
return -1;
if (CRYPTO_ocb128_finish(&octx->ocb,
octx->tag, octx->taglen) != 0)
return -1;
octx->iv_set = 0;
return written_len;
}
/* If encrypting then just get the tag */
if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1)
return -1;
/* Don't reuse the IV */
octx->iv_set = 0;
return written_len;
}
}
static int sms4_ocb_cleanup(EVP_CIPHER_CTX *c)
{
EVP_SMS4_OCB_CTX *octx = EVP_C_DATA(EVP_SMS4_OCB_CTX,c);
CRYPTO_ocb128_cleanup(&octx->ocb);
return 1;
}
#define SMS4_OCB_IV_LENGTH 12
#define SMS4_OCB_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
| EVP_CIPH_CUSTOM_COPY \
| EVP_CIPH_FLAG_AEAD_CIPHER)
static const EVP_CIPHER sms4_ocb = {
NID_sms4_ocb,
SMS4_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_OCB_IV_LENGTH,
SMS4_OCB_FLAGS,
sms4_ocb_init_key,
sms4_ocb_cipher,
sms4_ocb_cleanup,
sizeof(EVP_SMS4_OCB_CTX),
NULL, NULL, sms4_ocb_ctrl, NULL
};
const EVP_CIPHER *EVP_sms4_ocb(void) {
return &sms4_ocb;
}
# endif /* OPENSSL_NO_OCB */
#endif /* OPENSSL_NO_SMS4 */

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/* ====================================================================
* Copyright (c) 2014 - 2017 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.
* ====================================================================
*/
/*
* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include "evp_locl.h"
# include "internal/evp_int.h"
#include "../modes/modes_lcl.h"
#ifndef OPENSSL_NO_SMS4
# include <openssl/sms4.h>
typedef struct {
union {
double align;
sms4_key_t ks;
} ks;
/* Indicates if IV has been set */
unsigned char *iv;
} EVP_SMS4_WRAP_CTX;
static int sms4_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_SMS4_WRAP_CTX *wctx = EVP_C_DATA(EVP_SMS4_WRAP_CTX,ctx);
if (!iv && !key)
return 1;
if (key) {
if (EVP_CIPHER_CTX_encrypting(ctx))
sms4_set_encrypt_key(&wctx->ks.ks, key);
else
sms4_set_decrypt_key(&wctx->ks.ks, key);
if (!iv)
wctx->iv = NULL;
}
if (iv) {
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx));
wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx);
}
return 1;
}
static int sms4_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inlen)
{
EVP_SMS4_WRAP_CTX *wctx = EVP_C_DATA(EVP_SMS4_WRAP_CTX,ctx);
size_t rv;
/* SMS4 wrap with padding has IV length of 4, without padding 8 */
int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4;
/* No final operation so always return zero length */
if (!in)
return 0;
/* Input length must always be non-zero */
if (!inlen)
return -1;
/* If decrypting need at least 16 bytes and multiple of 8 */
if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7))
return -1;
/* If not padding input must be multiple of 8 */
if (!pad && inlen & 0x7)
return -1;
if (!out) {
if (EVP_CIPHER_CTX_encrypting(ctx)) {
/* If padding round up to multiple of 8 */
if (pad)
inlen = (inlen + 7) / 8 * 8;
/* 8 byte prefix */
return inlen + 8;
} else {
/*
* If not padding output will be exactly 8 bytes smaller than
* input. If padding it will be at least 8 bytes smaller but we
* don't know how much.
*/
return inlen - 8;
}
}
if (pad) {
if (EVP_CIPHER_CTX_encrypting(ctx))
rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv,
out, in, inlen,
(block128_f)sms4_encrypt);
else
rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv,
out, in, inlen,
(block128_f)sms4_encrypt);
} else {
if (EVP_CIPHER_CTX_encrypting(ctx))
rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv,
out, in, inlen, (block128_f)sms4_encrypt);
else
rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
out, in, inlen, (block128_f)sms4_encrypt);
}
return rv ? (int)rv : -1;
}
#define SMS4_WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
static const EVP_CIPHER sms4_wrap = {
NID_sms4_wrap,
8, 16, 8, SMS4_WRAP_FLAGS,
sms4_wrap_init_key, sms4_wrap_cipher,
NULL,
sizeof(EVP_SMS4_WRAP_CTX),
NULL, NULL, NULL, NULL
};
const EVP_CIPHER *EVP_sms4_wrap(void)
{
return &sms4_wrap;
}
static const EVP_CIPHER sms4_wrap_pad = {
NID_sms4_wrap_pad,
8, 16, 4, SMS4_WRAP_FLAGS,
sms4_wrap_init_key, sms4_wrap_cipher,
NULL,
sizeof(EVP_SMS4_WRAP_CTX),
NULL, NULL, NULL, NULL
};
const EVP_CIPHER *EVP_sms4_wrap_pad(void)
{
return &sms4_wrap_pad;
}
#endif /* OPENSSL_NO_SMS4 */

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/* ====================================================================
* Copyright (c) 2014 - 2017 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.
* ====================================================================
*/
/*
* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/crypto.h>
#include <openssl/objects.h>
#include "evp_locl.h"
# include "internal/evp_int.h"
#include "../modes/modes_lcl.h"
#ifndef OPENSSL_NO_SMS4
# include <openssl/sms4.h>
typedef struct {
union {
double align;
sms4_key_t ks;
} ks1, ks2; /* SMS4 key schedules to use */
XTS128_CONTEXT xts;
void (*stream) (const unsigned char *in,
unsigned char *out, size_t length,
const sms4_key_t *key1, const sms4_key_t *key2,
const unsigned char iv[16]);
} EVP_SMS4_XTS_CTX;
static int sms4_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
EVP_SMS4_XTS_CTX *xctx = EVP_C_DATA(EVP_SMS4_XTS_CTX,c);
if (type == EVP_CTRL_COPY) {
EVP_CIPHER_CTX *out = ptr;
EVP_SMS4_XTS_CTX *xctx_out = EVP_C_DATA(EVP_SMS4_XTS_CTX,out);
if (xctx->xts.key1) {
if (xctx->xts.key1 != &xctx->ks1)
return 0;
xctx_out->xts.key1 = &xctx_out->ks1;
}
if (xctx->xts.key2) {
if (xctx->xts.key2 != &xctx->ks2)
return 0;
xctx_out->xts.key2 = &xctx_out->ks2;
}
return 1;
} else if (type != EVP_CTRL_INIT)
return -1;
/* key1 and key2 are used as an indicator both key and IV are set */
xctx->xts.key1 = NULL;
xctx->xts.key2 = NULL;
return 1;
}
static int sms4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_SMS4_XTS_CTX *xctx = EVP_C_DATA(EVP_SMS4_XTS_CTX,ctx);
if (!iv && !key)
return 1;
if (key)
do {
xctx->stream = NULL;
/* key_len is two SMS4 keys */
(void)0; /* terminate potentially open 'else' */
if (enc) {
sms4_set_encrypt_key(&xctx->ks1.ks, key);
xctx->xts.block1 = (block128_f)sms4_encrypt;
} else {
sms4_set_decrypt_key(&xctx->ks1.ks, key);
xctx->xts.block1 = (block128_f)sms4_encrypt;
}
sms4_set_encrypt_key(&xctx->ks2.ks, key + EVP_CIPHER_CTX_key_length(ctx)/2);
xctx->xts.block2 = (block128_f)sms4_encrypt;
xctx->xts.key1 = &xctx->ks1;
} while (0);
if (iv) {
xctx->xts.key2 = &xctx->ks2;
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
}
return 1;
}
static int sms4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_SMS4_XTS_CTX *xctx = EVP_C_DATA(EVP_SMS4_XTS_CTX,ctx);
if (!xctx->xts.key1 || !xctx->xts.key2)
return 0;
if (!out || !in || len < SMS4_BLOCK_SIZE)
return 0;
if (xctx->stream)
(*xctx->stream) (in, out, len,
xctx->xts.key1, xctx->xts.key2,
EVP_CIPHER_CTX_iv_noconst(ctx));
else if (CRYPTO_xts128_encrypt(&xctx->xts, EVP_CIPHER_CTX_iv_noconst(ctx),
in, out, len,
EVP_CIPHER_CTX_encrypting(ctx)))
return 0;
return 1;
}
#define SMS4_XTS_BLOCK_SIZE 1
#define SMS4_XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
| EVP_CIPH_CUSTOM_COPY)
static const EVP_CIPHER sms4_xts = {
NID_sms4_xts,
SMS4_XTS_BLOCK_SIZE,
SMS4_KEY_LENGTH,
SMS4_IV_LENGTH,
SMS4_XTS_FLAGS,
sms4_xts_init_key,
sms4_xts_cipher,
NULL,
sizeof(EVP_SMS4_XTS_CTX),
NULL, NULL, sms4_xts_ctrl, NULL
};
const EVP_CIPHER *EVP_sms4_xts(void) {
return &sms4_xts;
}
#endif /* OPENSSL_NO_SMS4 */