Nodejs 中常见的加密算法：RSA，1

Linux用户（以Ubuntu为例）

$ openssl 进入OpenSSL程序

OpenSSL> genrsa -out rsa_private_key.pem 1024

生成私钥

OpenSSL> pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt Java开发者需要将私钥转换成PKCS8格式

OpenSSL> rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem 生成公钥

OpenSSL> exit ## 退出OpenSSL程序

Windows用户在cmd窗口中进行以下操作： C:\Users\Hammer>cd C:\OpenSSL-Win32\bin

进入OpenSSL安装目录 C:\OpenSSL-Win32\bin>openssl.exe

进入OpenSSL程序 OpenSSL> genrsa -out rsa_private_key.pem 1024

生成私钥 OpenSSL> pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt

Java开发者需要将私钥转换成PKCS8格式

OpenSSL> rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem 生成公钥

OpenSSL> exit ## 退出OpenSSL程序

https://github.com/reflux/refluxjs/issues/300

var crypto = require('crypto')
    ,fs = require('fs');
const padding = crypto.constants.RSA_PKCS1_PADDING;


module.exports = {
        Decrypt: function(data){
                var publicPem = fs.readFileSync('./pem/rsa_public_key.pem');
                var pubkey = publicPem.toString();
                var buf = Buffer.from(data, 'hex');
                var plaintext = crypto.publicDecrypt({
                    key: pubkey,
                    padding: crypto.constants.RSA_PKCS1_PADDING
                }, buf);
                return plaintext.toString();
        },
        Encrypt: function(data){
                var privatePem = fs.readFileSync('./pem/rsa_private_key.pem');
                var key = privatePem.toString();
                var result = crypto.privateEncrypt({
                    key: key,
                    padding: padding
                }, new Buffer(data,'utf8'));
                return result.toString('hex');
        }
};