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SOP/sop-sdk/sdk-c++/common/sign.cpp

118 lines
3.2 KiB

#include <utility>
#include "../thirdparty/base64/base64.h"
#include "sign.h"
#include "RSASign.h"
#include "tool.h"
namespace signutil {
string createSign(map<string, string> params, const string& privateKeyFilepath, const string& signType) {
string content = getSignContent(std::move(params));
return sign(content, privateKeyFilepath, "");
}
string sign(const string& content, const string& privateKeyFilepath, const string& hash) {
BIO *bufio = NULL;
RSA *rsa = NULL;
EVP_PKEY *evpKey = NULL;
bool verify = false;
EVP_MD_CTX ctx;
int result = 0;
unsigned int size = 0;
char *sign = NULL;
std::string signStr = "";
//bufio = BIO_new_mem_buf((void*)private_key, -1);
//if (bufio == NULL) {
// ERR("BIO_new_mem_buf failed");
// goto safe_exit;
//}
bufio = BIO_new(BIO_s_file());
// 读取私钥文件
BIO_read_filename(bufio, privateKeyFilepath.c_str());
// 私钥字符串转换成私钥对象
rsa = PEM_read_bio_RSAPrivateKey(bufio, NULL, NULL, NULL);
if (rsa == NULL) {
ERR("PEM_read_bio_RSAPrivateKey failed");
goto safe_exit;
}
evpKey = EVP_PKEY_new();
if (evpKey == NULL) {
ERR("EVP_PKEY_new failed");
goto safe_exit;
}
if ((result = EVP_PKEY_set1_RSA(evpKey, rsa)) != 1) {
ERR("EVP_PKEY_set1_RSA failed");
goto safe_exit;
}
EVP_MD_CTX_init(&ctx);
// SHA256签名
if (result == 1 && (result = EVP_SignInit_ex(&ctx,
EVP_sha256(), NULL)) != 1) {
ERR("EVP_SignInit_ex failed");
}
if (result == 1 && (result = EVP_SignUpdate(&ctx,
content.c_str(), content.size())) != 1) {
ERR("EVP_SignUpdate failed");
}
size = EVP_PKEY_size(evpKey);
sign = (char*)malloc(size+1);
memset(sign, 0, size+1);
if (result == 1 && (result = EVP_SignFinal(&ctx,
(unsigned char*)sign,
&size, evpKey)) != 1) {
ERR("EVP_SignFinal failed");
}
if (result == 1) {
verify = true;
} else {
ERR("verify failed");
}
signStr = base64_encode((const unsigned char*)sign, size);
EVP_MD_CTX_cleanup(&ctx);
free(sign);
safe_exit:
if (rsa != NULL) {
RSA_free(rsa);
rsa = NULL;
}
if (evpKey != NULL) {
EVP_PKEY_free(evpKey);
evpKey = NULL;
}
if (bufio != NULL) {
BIO_free_all(bufio);
bufio = NULL;
}
return signStr;
}
string getSignContent(map<string, string> params){
map<string, string>::iterator iter;
string content;
for(iter = params.begin(); iter != params.end(); iter++) {
content.append("&").append(iter->first + "=" + iter->second);
}
return content.substr(1);
}
void ERR(const string &msg) {
throw msg;
}
}