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[crypto] add sm4 standard implementation
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zhaoxiaomeng
@@ -1,4 +1,5 @@
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LIBS=../../libcrypto
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SOURCE[../../libcrypto]=\
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sms4_common.c sms4_setkey.c sms4_enc.c sms4_enc_nblks.c \
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sms4_ecb.c sms4_cbc.c sms4_cfb.c sms4_ctr.c sms4_ofb.c sms4_wrap.c
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sms4_ecb.c sms4_cbc.c sms4_cfb.c sms4_ctr.c sms4_ofb.c sms4_wrap.c \
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sms4_standard.c
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207
crypto/sms4/sms4_standard.c
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207
crypto/sms4/sms4_standard.c
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@@ -0,0 +1,207 @@
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/* ====================================================================
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* Copyright (c) 2014 - 2017 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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#include <openssl/sms4.h>
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//rotate n bits to the left in a 32bit buffer
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#define SM4_ROTL32(buf, n) (((buf)<<n)|((buf)>>(32-n)))
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uint32_t SM4_CK[32] = {0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
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0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
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0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
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0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
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0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
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0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
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0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
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0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
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};
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uint8_t SM4_SBOX[256] =
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{ 0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
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0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,
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0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,
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0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,
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0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,
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0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,
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0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,
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0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,
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0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,
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0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,
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0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,
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0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,
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0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,
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0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,
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0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,
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0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
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};
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uint32_t SM4_FK[4] = {0xA3B1BAC6, 0x56AA3350, 0x677D9197, 0xB27022DC};
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void sm4_standard_key_schedule(const unsigned char *key, uint32_t *rk)
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{
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uint32_t tmp, buf, K[36];
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uint32_t i;
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for (i = 0; i < 4; i++)
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{
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K[i] = SM4_FK[i] ^ ( (key[4 * i] << 24) | (key[4 * i + 1] << 16)
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| (key[4 * i + 2] << 8) | (key[4 * i + 3]) );
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}
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for (i = 0; i < 32; i++)
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{
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tmp = K[i + 1] ^ K[i + 2] ^ K[i + 3] ^ SM4_CK[i];
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//nonlinear operation
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buf = (SM4_SBOX[(tmp >> 24) & 0xFF]) << 24
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| (SM4_SBOX[(tmp >> 16) & 0xFF]) << 16
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| (SM4_SBOX[(tmp >> 8) & 0xFF]) << 8
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| (SM4_SBOX[tmp & 0xFF]);
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//linear operation
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K[i + 4] = K[i] ^ ((buf) ^ (SM4_ROTL32((buf), 13)) ^ (SM4_ROTL32((buf), 23)));
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rk[i] = K[i + 4];
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}
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}
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void sms4_standard_encrypt(const unsigned char *in, unsigned char *out, const unsigned char *key)
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{
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uint32_t rk[32], X[36], tmp, buf;
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uint32_t i, j;
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sm4_standard_key_schedule(key, rk);
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for (j = 0; j < 4; j++)
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{
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X[j] = (in[j * 4] << 24) | (in[j * 4 + 1] << 16)
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| (in[j * 4 + 2] << 8) | (in[j * 4 + 3]);
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}
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for (i = 0; i < 32; i++)
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{
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tmp = X[i + 1] ^ X[i + 2] ^ X[i + 3] ^ rk[i];
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//nonlinear operation
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buf = ( SM4_SBOX[(tmp >> 24) & 0xFF]) << 24
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| (SM4_SBOX[(tmp >> 16) & 0xFF]) << 16
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| (SM4_SBOX[(tmp >> 8) & 0xFF]) << 8
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| (SM4_SBOX[tmp & 0xFF]);
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//linear operation
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X[i + 4] = X[i] ^ (buf ^ SM4_ROTL32((buf), 2)^ SM4_ROTL32((buf), 10)
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^ SM4_ROTL32((buf), 18)^ SM4_ROTL32((buf), 24));
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}
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for (j = 0; j < 4; j++)
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{
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out[4 * j] = (X[35 - j] >> 24) & 0xFF;
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out[4 * j + 1] = (X[35 - j] >> 16) & 0xFF;
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out[4 * j + 2] = (X[35 - j] >> 8) & 0xFF;
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out[4 * j + 3] = (X[35 - j]) & 0xFF;
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}
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}
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void sms4_standard_decrypt(const unsigned char *in, unsigned char *out, const unsigned char *key)
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{
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uint32_t rk[32], X[36], tmp, buf;
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uint32_t i, j;
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sm4_standard_key_schedule(key, rk);
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for (j = 0; j < 4; j++)
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{
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X[j] = (in[j * 4] << 24) | (in[j * 4 + 1] << 16) |
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(in[j * 4 + 2] << 8) | (in[j * 4 + 3]);
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}
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for (i = 0; i < 32; i++)
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{
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tmp = X[i + 1] ^ X[i + 2] ^ X[i + 3] ^ rk[31 - i];
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//nonlinear operation
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buf = (SM4_SBOX[(tmp >> 24) & 0xFF]) << 24
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| (SM4_SBOX[(tmp >> 16) & 0xFF]) << 16
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| (SM4_SBOX[(tmp >> 8) & 0xFF]) << 8
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| (SM4_SBOX[tmp & 0xFF]);
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//linear operation
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X[i + 4] = X[i] ^ (buf ^ SM4_ROTL32((buf), 2)^ SM4_ROTL32((buf), 10)
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^ SM4_ROTL32((buf), 18)^ SM4_ROTL32((buf), 24));
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}
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for (j = 0; j < 4; j++)
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{
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out[4 * j] = (X[35 - j] >> 24) & 0xFF;
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out[4 * j + 1] = (X[35 - j] >> 16) & 0xFF;
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out[4 * j + 2] = (X[35 - j] >> 8) & 0xFF;
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out[4 * j + 3] = (X[35 - j]) & 0xFF;
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}
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}
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int sm4_standard_self_check()
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{
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int i;
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//Standard data
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unsigned char key[16] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10};
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unsigned char plain[16] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10};
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unsigned char cipher[16] = {0x68, 0x1e, 0xdf, 0x34, 0xd2, 0x06, 0x96, 0x5e, 0x86, 0xb3, 0xe9, 0x4f, 0x53, 0x6e, 0x42, 0x46};
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unsigned char En_output[16];
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unsigned char De_output[16];
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sms4_standard_encrypt(plain, En_output,key);
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sms4_standard_decrypt(cipher, De_output,key);
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for (i = 0; i < 16; i++)
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{
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if ( (En_output[i] != cipher[i]) | (De_output[i] != plain[i]) )
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{
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return 1;
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}
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}
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return 0;
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}
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@@ -123,8 +123,14 @@ void sms4_ede_decrypt_8blocks(sms4_ede_key_t *key, const unsigned char *in, unsi
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void sms4_ede_decrypt_16blocks(sms4_ede_key_t *key, const unsigned char *in, unsigned char *out);
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*/
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void sms4_standard_encrypt(const unsigned char *in, unsigned char *out, const unsigned char *key);
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void sms4_standard_decrypt(const unsigned char *in, unsigned char *out, const unsigned char *key);
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#ifdef __cplusplus
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}
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#endif
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#endif
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#endif
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