nodejs how to encrypt

Nodejs encryption method: 1. Import the crypto module; 2. Set the encryption type and encryption key to be used; 3. Convert the encoding method from utf-8 to hex; 4. Return the encrypted characters Just skewer.

The operating environment of this article: Windows 7 system, nodejs version 10.16.2, DELL G3 computer.

How to encrypt nodejs?

nodejs common encryption methods:

/**
 * @加密模块
 * @md5可以被彩虹吧破解,这里就不用啦
 * @author lwt
 * */
//导入模块
var crypto = require('crypto');
/**
 * @aes192加密模块
 * @param str string 要加密的字符串
 * @param secret string 要使用的加密密钥(要记住,不然就解不了密啦)
 * @retrun string 加密后的字符串
 * */
exports.getEncAse192 = function(str, secret) {
    var cipher = crypto.createCipher("aes192", secret); //设置加密类型 和 要使用的加密密钥
    var enc = cipher.update(str, "utf8", "hex");    //编码方式从utf-8转为hex;
    enc += cipher.final("hex"); //编码方式从转为hex;
    return enc; //返回加密后的字符串
}
/**
 * @aes192解密模块
 * @param str string 要解密的字符串
 * @param secret string 要使用的解密密钥(要和密码的加密密钥对应,不然就解不了密啦)
 * @retrun string 解密后的字符串
 * */
exports.getDecAse192 = function(str, secret) {
    var decipher = crypto.createDecipher("aes192", secret);
    var dec = decipher.update(str, "hex", "utf8");//编码方式从hex转为utf-8;
    dec += decipher.final("utf8");//编码方式从utf-8;
    return dec;
}
/**
 * @Hmac-sha1加密模块 (每次加密随机,不可逆)
 * @param str string 要加密的字符串
 * @param secret string 要使用的加密密钥
 * @retrun string 加密后的字符串
 * */
exports.getHmac = function(str, secret) {
    var buf = crypto.randomBytes(16);
    secret = buf.toString("hex");//密钥加密；
    var Signture = crypto.createHmac("sha1", secret);//定义加密方式
    Signture.update(str);
    var miwen=Signture.digest().toString("base64");//生成的密文后将再次作为明文再通过pbkdf2算法迭代加密；
    return miwen;
}
/**
 * @sha1加密模块 (加密固定,不可逆)
 * @param str string 要加密的字符串
 * @retrun string 加密后的字符串
 * */
exports.getSha1 = function(str) {
    var sha1 = crypto.createHash("sha1");//定义加密方式:md5不可逆,此处的md5可以换成任意hash加密的方法名称；
    sha1.update(str);
    var res = sha1.digest("hex");  //加密后的值d
    return res;
}

Encryption is to change the original information data with a certain algorithm, so that unauthorized users can obtain the encrypted information , because the decryption method is not known, the true meaning of the information cannot be known. In this way, the security of network data transmission is improved. Common encryption algorithms include hash algorithm, HMAC algorithm, signature, symmetric encryption algorithm and asymmetric encryption. Algorithms, encryption algorithms are also divided into reversible and irreversible. For example, md5 is irreversible encryption and can only be violently cracked (credential stuffing). We directly use these encryption algorithms in NodeJS development. The crypto module provides encryption functions, including the encryption of OpenSSL. A complete set of encapsulation, HMAC, encryption, decryption, signature and verification functions, the core module does not need to be installed when using it.

[Recommended learning: "nodejs video tutorial"]

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