开心乐源的专栏

wireshark分析https流量

smtp演示http://www.faqs.org/rfcs/rfc821.html WSADATA wsa; WSAStartup(MAKEWORD(2,2), &wsa); SOCKET sock = socket(AF_INET, SOCK_STREAM, 0); if (sock == INVALID_SOCKET) { return -1; }

在MS的SDK6.0中有个证书生成工具makecert.exe， 你可以使用这个工具来生成测试用的证书。 第一步，生成一个自签名的根证书（issuer,签发者）。>makecert -n "CN=Root" -r -sv RootIssuer.pvk RootIssuer.cer  这个时候，会弹出提示框，首先给RootIssuer.pvk文件设置私钥保护口令； 然

一个集成在Windows资源管理器右键菜单里面的工具，类似于WinRAR，可以对选中的文件或者文件夹进行加密。加密算法，由Windows的CryptoAPI提供。另外还附带了一个hash菜单，可以对选中的文件计算hash值，hash算法使用openssl的MD5-128。 下面的地址可以下载这个工具：http://sourceforge.net/projects/easycrypt

公钥和私钥的产生N = 17 * 53 = 901m = (17-1)*(53-1)=832let e=17 // by random d = 49 // because ( d * e ) % m = 1 , that is ( d * 17 ) % 832 = 1公钥(901,17) 私钥(901,49)加密过程int text = 123 (注意，消息

uint32 crc32_tab[] = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cb

http://en.wikipedia.org/wiki/X.509http://blog.youkuaiyun.com/wuzh1230/article/details/4240238http://blog.youkuaiyun.com/wuzh1230/article/details/7211997证书文件的编码二进制编码 - DER按照x509定义的结构编码结果直接写入二进制文件

参考Wiki：http://wiki.openssl.org/index.php/AndroidWhile the Executive Summary provided the whirlwind instructions for building and installing the OpenSSL library, this sections provides detail

1)生成根证书1.1) 生成RSA私钥openssl genrsa -out cakey.pem 20481.2) 生成证书请求openssl req -new -key cakey.pem -out cacsr.pem1.3) 签发自签名证书openssl x509 -in cacsr.pem -req -signkey cakey.pem -da

参考上文【OpenSSL】创建证书1, 产生CA证书1.1, 生成ca的私钥openssl genrsa -out cakey.pem 20481.2, 生成ca的自签名证书请求openssl req -new -key cakey.pem -subj "/CN=Example Root CA" -out cacsr.pem 1.3, 自签名ca的证书openssl x509 -req -in ...

1，通信双方的证书生成openssl genrsa -out cakey.pem 2048openssl req -new -key cakey.pem -subj "/CN=rootca.bitbaba.com" -out cacsr.pemopenssl x509 -req -in cacsr.pem -days 999 -signkey cakey.pem -out cacert

代码头文件 #include <stdio.h> #include <stdlib.h> #include <string.h> #include <openssl/buffer.h> #include <openssl/bio.h>#记得包含openssl/buffer.h,否则BUF_MEM定义未知测试代码int main(int argc, char *

1. RSA密钥生成1. 测试代码#include <stdio.h>#include <stdlib.h>#include <string.h># include <openssl/bio.h># include <openssl/err.h># include <openssl/bn.h># include <openssl/rsa.h># include <openssl/evp.

Prepare Test dataecho -n "hello world" > msg.txtsign means that encrypt a little data (usually digest of message, not the message itself) with private key. so do NOT sign with a large input, which ma

Test code#include <stdio.h>#include <stdlib.h>#include <string.h># include <openssl/e_os2.h># include <openssl/bio.h># include <openssl/err.h># include <openssl/bn.h># include <openssl/rsa.h># i

Test code#include <stdio.h>#include <stdlib.h>#include <string.h># include <openssl/e_os2.h># include <openssl/bio.h># include <openssl/err.h># include <openssl/bn.h># include <openssl/rsa.h># i

practice of s_client from openssl

IntroductionThere are many ways to do base64 encoding/decoding in OpenSSL, Here are some demos code with BIO filter. Other ways, e.g. EVP_* will be introduced later Base64 with EVP.Encodestd::string

IntroductionHere are some deoms code of Base64 encoding/decoding with EVP_Encode/EVP_Decode.Encodebool Base64Encode(const std::vector<unsigned char > & vchInput, std::string & b64str){ EVP_ENCOD

IntroductionHere GroupMessage means that a message is sent to a group of recipients.