openSSL学习笔记 加密字符串

在精通PKI网络安全证技术与编程实现一书中的例子代码有错

原书

申明加密字符 char *msg="Hello OpenSSL";

 rv=EVP_EncryptUpdate(&ctx,out,&outl,msg,strlen(msg));

在vc6++ 下编译不能通过

 

应改为

 char msg[]="Hello OpenSSLjkljllkl";

 rv=EVP_EncryptUpdate(&ctx,out,&outl,(const unsigned char *)msg,strlen(msg));

 

#include<stdio.h>#include<evp.h>#include<string.h>#include<windows.h>#include<x509.h>void tEVP_Encrypt(){unsigned char key[EVP_MAX_KEY_LENGTH];unsigned char iv[EVP_MAX_KEY_LENGTH];EVP_CIPHER_CTX ctx;unsigned char out[1024];int outl;int outltmp; char msg[]="Hello OpenSSLjkljllkl";int rv;int i;for(i=0;i<24;i++){key[i]=i;}for (i=0;i<8;i++){iv[i]=i;}EVP_CIPHER_CTX_init(&ctx);rv=EVP_EncryptInit_ex(&ctx,EVP_des_ede3_cbc(),NULL,key,iv);if(rv != 1){printf("Err/n");return;}rv=EVP_EncryptUpdate(&ctx,out,&outl,(const unsigned char *)msg,strlen(msg));if (rv !=1){printf("Err/n");return;}rv=EVP_EncryptFinal_ex(&ctx,out+outl,&outltmp);if (rv !=1){printf("Err/n"); return;}outl=outl+outltmp;printf("原文为：%S/n",msg);printf("密文长度： %d/n密文数据:/n",outl);for (i=0;i<outl;i++){printf("0x%02x ",out[i]);} printf("/n");}int main(){OpenSSL_add_all_algorithms();tEVP_Encrypt();return 0;}

 

输出：