OpenSSL项目最近6个月添加了许多新特性, 包括对中国SM2/SM3/SM4算法的支持:
- SM2椭圆曲线: https://github.com/openssl/openssl/pull/4793
- SM3哈希摘要: https://github.com/openssl/openssl/pull/4616
- SM4对称加密: https://github.com/openssl/openssl/pull/4552
参考: 中国国家密码管理局制定的商业密码算法标准
-
《GM/T 0006-2012 密码应用标识规范》定义国密算法OID标识
-
《GB/T 32907-2016 SM4分组密码算法》(原GM/T 0002-2012)
-
《GB/T 329??-2016 SM2椭圆曲线公钥密码算法》(原GM/T 0003-2012)
-
《GB/T 32905-2016 SM3密码杂凑算法》(原GM/T 0004-2012)
下载源码, 编译, 以及验证步骤
下载源码
- https://www.openssl.org/source/openssl-1.1.1-pre4.tar.gz
- https://www.openssl.org/source/openssl-1.1.1-pre5.tar.gz
解压缩
tar xzvf openssl-1.1.1-pre4.tar.gz
tar xzvf openssl-1.1.1-pre5.tar.gz
编译步骤
cd openssl-1.1.1-pre5
./config
make
本地安装(可选步骤)
sudo make install
配置LD_LIBRARY_PATH并检查openssl可执行程序版本号
$ export LD_LIBRARY_PATH=`pwd`
$ ./apps/openssl version
OpenSSL 1.1.1-pre5 (beta) 17 Apr 2018
检查 SM3 哈希校验和
$ echo -n "abc" | ./apps/openssl dgst -SM3
(stdin)= 66c7f0f462eeedd9d1f2d46bdc10e4e24167c4875cf2f7a2297da02b8f4ba8e0
检查椭圆曲线是否包含SM2
$ ./apps/openssl ecparam -list_curves | grep SM2
SM2 : SM2 curve over a 256 bit prime field
检查对称算法
./apps/openssl enc -ciphers
-sm4
-sm4-cbc
-sm4-cfb
-sm4-ctr
-sm4-ecb
-sm4-ofb
查找SM4对称加密API接口文档
???
SM4-自测试数据
- 测试SM4-ECB电子密码本模式, 选取AES-128-ECB作为参考
https://github.com/liuqun/openssl-sm4-demo/
/** 文件名: https://github.com/liuqun/openssl-sm4-demo/blob/cmake/src/main.c */
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "openssl/err.h"
#include "openssl/evp.h"
/* Before OpenSSL 1.1.1-pre1, we did not have EVP_sm4_ecb() */
#if defined(OPENSSL_VERSION_NUMBER) \
&& OPENSSL_VERSION_NUMBER < 0x10101001L
static const EVP_CIPHER *(*EVP_sm4_ecb)()=EVP_aes_128_ecb;
#endif
typedef struct {
const unsigned char *in_data;
size_t in_data_len;
int in_data_is_already_padded;
const unsigned char *in_ivec;
const unsigned char *in_key;
size_t in_key_len;
} test_case_t;
void test_encrypt_with_cipher(const test_case_t *in, const EVP_CIPHER *cipher)
{
unsigned char *out_buf = NULL;
int out_len;
int out_padding_len;
EVP_CIPHER_CTX *ctx;
ctx = EVP_CIPHER_CTX_new();
EVP_EncryptInit_ex(ctx, cipher, NULL, in->in_key, in->in_ivec);
if (in->in_data_is_already_padded)
{
/* Check whether the input data is already padded.
And its length must be an integral multiple of the cipher's block size. */
const size_t bs = EVP_CIPHER_block_size(cipher);
if (in->in_data_len % bs != 0)
{
printf("ERROR-1: data length=%d which is not added yet; block size=%d\n", (int) in->in_data_len, (int) bs);
/* Warning: Remember to do some clean-ups */
EVP_CIPHER_CTX_free(ctx);
return;
}
/* Disable the implicit PKCS#7 padding defined in EVP_CIPHER */
EVP_CIPHER_CTX_set_padding(ctx, 0);
}
out_buf = (unsigned char *) malloc(((in->in_data_len>>4)+1) << 4);
out_len = 0;
EVP_EncryptUpdate(ctx, out_buf, &out_len, in->in_data, in->in_data_len);
if (1)
{
printf("Debug: out_len=%d\n", out_len);
}
out_padding_len = 0;
EVP_EncryptFinal_ex(ctx, out_buf+out_len, &out_padding_len);
if (1)
{
printf("Debug: out_padding_len=%d\n", out_padding_len);
}
EVP_CIPHER_CTX_free(ctx);
if (1)
{
int i;
int len;
len = out_len + out_padding_len;
for (i=0; i<len; i++)
{
printf("%02x ", out_buf[i]);
}
printf("\n");
}
if (out_buf)
{
free(out_buf);
out_buf = NULL;
}
}
void main()
{
int have_sm4 = (OPENSSL_VERSION_NUMBER >= 0x10101001L);
int have_aes = 1;
const unsigned char data[]=
{
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
};
unsigned char ivec[EVP_MAX_IV_LENGTH]; ///< IV 向量
const unsigned char key1[16] = ///< key_data, 密钥内容, 至少16字节
{
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
};
test_case_t tc;
tc.in_data = data;
tc.in_data_len = sizeof(data);
tc.in_data_is_already_padded = (tc.in_data_len % 16)==0; // Hard coded 16 as the cipher's block size
tc.in_key = key1;
tc.in_key_len = sizeof(key1);
memset(ivec, 0x00, EVP_MAX_IV_LENGTH);
tc.in_ivec = ivec;
#if defined(OPENSSL_NO_SM4)
have_sm4 = 0;
#endif
if (have_sm4)
{
printf("[1]\n");
printf("Debug: EVP_sm4_ecb() test\n");
test_encrypt_with_cipher(&tc, EVP_sm4_ecb());
}
#if defined(OPENSSL_NO_AES)
have_aes = 0;
#endif
if (have_aes)
{
printf("[2]\n");
printf("Debug: EVP_aes_128_ecb() test\n");
test_encrypt_with_cipher(&tc, EVP_aes_128_ecb());
}
}
假定当前是把main.c放在 openssl-1.1.1-pre5/文件夹内
gcc -Iinclude -c main.c
gcc main.o libcrypto.so -o a.out
export LD_LIBRARY_PATH=`pwd`
ldd a.out
./a.out
9.1. GM/T OIDs
9.1.1. SCA OID Prefix
All SM4 GM/T OIDs belong under the "1.2.156.10197" OID prefix,
registered by the Chinese Cryptography Standardization Technology
Committee ("CCSTC"), a committee under the SCA. Its components are
described below in ASN.1 notation.