void sha256(const std::string &srcStr, std::string &encodedStr, std::string &encodedHexStr) { // 调用sha256哈希 unsigned char mdStr[33] = {0}; SHA256((const unsigned char *)srcStr.c_str(), srcStr.length(), mdStr); // 哈希后的字符串 encodedStr = std::string((const...
4.生成私钥和公钥 openssl ecparam -genkey -name prime256v1 -out eccpri256.key openssl ec -in eccpri256.key -pubout -out eccpri256.pem 1. 2. 5.运行结果 root@ubuntu:/home/workspace/test/demo_sign# ./ecdsa s eccpri256.key sign digest: ¹M'¹M¥.Rؚ}«尣zS ???Ω E948...
1.直接上源码: #include<stdio.h>#include<string.h>#include<openssl/ecdsa.h>#include<openssl/pem.h>#include<openssl/err.h>// base64 编码char*base64_encode(constchar*buffer,intlength){BIO*bmem=NULL;BIO*b64=NULL;BUF_MEM*bptr;char*buff=NULL;b64=BIO_new(BIO_f_base64());BIO_set_flags...
#include <openssl/pem.h> #include <openssl/err.h> #include <openssl/sha.h> #include <openssl/crypto.h> /* * */ #define PRIVATE_KEY_PATH ("./rsaprivatekey.pem") #define SHA_WHICH NID_sha256 #define WHICH_DIGEST_LENGTH SHA256_DIGEST_LENGTH void printHex(unsigned char *md, int len...
#include<stdio.h>#include<stdlib.h>#include<string.h>#include<openssl/sha.h>#defineMAX_DATA_LEN 1024#defineSHA256_LENTH 32intmain(intargc,char**argv){SHA256_CTX sha256_ctx;FILE*fp=NULL;char*strFilePath=argv[1];unsignedcharSHA256result[SHA256_LENTH];charDataBuff[MAX_DATA_LEN];intlen;...
SHA256((unsignedchar*)data, strlen(data), md); printHex(md, WHICH_DIGEST_LENGTH); pubKey=ReadPublicKey(PUBLIC_KEY_PATH);if(!pubKey) { printf("Error: can't load public key");return-1; }/*验签*/nRet=RSA_verify(SHA_WHICH, md, WHICH_DIGEST_LENGTH, buf, nOutLen, pubKey); ...
EVP_DigestInit(&md_ctx,EVP_sha256())){printf("EVP_digest fail \n");return-1;}if(!EVP_DigestUpdate(&md_ctx,(constvoid*)input,input_len)){printf("EVP_DigestUpdate fail \n");return-1;}if(!EVP_DigestFinal(&md_ctx,digest,&digest_len)){// 待签名消息用sha256生成256比特的签名摘要...
C语言openssl库的ECDSA-with-sha256签名和验签2022-05-02 804 版权 简介: C语言openssl库的ECDSA-with-sha256签名和验签,直接上源码。1.直接上源码:#include <stdio.h> #include <string.h> #include <openssl/ecdsa.h> #include <openssl/pem.h> ...
要在Windows上使用C语言并且不依赖于任何第三方库（如OpenSSL）来计算SHA-256哈希，可以使用Windows Crypto API (Cryptographic Application Programming Interface, CAPI)。下面是使用Windows Crypto API来计算一个字符串的SHA-256哈希值的示例代码：#include<windows.h>#include<wincrypt.h>#include<stdio.h>voidPrint...
要在Windows上使用C语言并且不依赖于任何第三方库(如OpenSSL)来计算SHA-256哈希,可以使用Windows Crypto API (Cryptographic Application Programming Interface, CAPI)。 下面是使用Windows Crypto API来计算一个字符串的SHA-256哈希值的示例代码: #include<windows.h>#include<wincrypt.h>#include<stdio.h>voidPri...