考虑到来自 http://www.thoughtcrime.org/blog/the-cryptographic-doom-principle/ (简而言之:首先加密，然后验证。之后先验证，然后解密) 我在node.js中实现了以下解决方案:

function encrypt(text,password){
  var cipher = crypto.createCipher(algorithm,password)
  var crypted = cipher.update(text,'utf8','hex')
  crypted += cipher.final('hex');
  return crypted;
}

function decrypt(text,password){
  var decipher = crypto.createDecipher(algorithm,password)
  var dec = decipher.update(text,'hex','utf8')
  dec += decipher.final('utf8');
  return dec;
}

function hashText(text){
    var hash = crypto.createHash('md5').update(text).digest("hex");
    //console.log(hash); 
    return hash;
}

function encryptThenAuthenticate(plainText,pw)
{
    var encryptedText = encrypt(plainText,pw);
    var hash = hashText(encryptedText);
    return encryptedText+"$"+hash;
}
function VerifyThenDecrypt(encryptedAndAuthenticatedText,pw)
{
    var encryptedAndHashArray = encryptedAndAuthenticatedText.split("$");
    var encrypted = encryptedAndHashArray[0];
    var hash = encryptedAndHashArray[1];
    var hash2Compare = hashText(encrypted);
    if (hash === hash2Compare)
    {
        return decrypt(encrypted,pw); 
    }
}

它可以用以下方法进行测试:

var doom = encryptThenAuthenticate("The encrypted text",user.cryptoPassword);
console.log(VerifyThenDecrypt(doom,user.cryptoPassword));

希望这对你有所帮助:-)

即使哈希不是为了安全性，您也可以使用sha而不是md5。在我看来，人们现在应该忘记md5，它是过去的事了!

不建议使用普通的nodejs sha256。所以，现在你有两个选择:

var shajs = require('sha.js')  - https://www.npmjs.com/package/sha.js (used by Browserify)

var hash = require('hash.js')  - https://github.com/indutny/hash.js

我更喜欢使用shajs而不是哈希，因为我认为sha是目前最好的哈希函数，你现在不需要一个不同的哈希函数。所以要在十六进制中获得一些哈希，你应该像下面这样做:

sha256.update('hello').digest('hex')

考虑到来自 http://www.thoughtcrime.org/blog/the-cryptographic-doom-principle/ (简而言之:首先加密，然后验证。之后先验证，然后解密) 我在node.js中实现了以下解决方案:

function encrypt(text,password){
  var cipher = crypto.createCipher(algorithm,password)
  var crypted = cipher.update(text,'utf8','hex')
  crypted += cipher.final('hex');
  return crypted;
}

function decrypt(text,password){
  var decipher = crypto.createDecipher(algorithm,password)
  var dec = decipher.update(text,'hex','utf8')
  dec += decipher.final('utf8');
  return dec;
}

function hashText(text){
    var hash = crypto.createHash('md5').update(text).digest("hex");
    //console.log(hash); 
    return hash;
}

function encryptThenAuthenticate(plainText,pw)
{
    var encryptedText = encrypt(plainText,pw);
    var hash = hashText(encryptedText);
    return encryptedText+"$"+hash;
}
function VerifyThenDecrypt(encryptedAndAuthenticatedText,pw)
{
    var encryptedAndHashArray = encryptedAndAuthenticatedText.split("$");
    var encrypted = encryptedAndHashArray[0];
    var hash = encryptedAndHashArray[1];
    var hash2Compare = hashText(encrypted);
    if (hash === hash2Compare)
    {
        return decrypt(encrypted,pw); 
    }
}

它可以用以下方法进行测试:

var doom = encryptThenAuthenticate("The encrypted text",user.cryptoPassword);
console.log(VerifyThenDecrypt(doom,user.cryptoPassword));

希望这对你有所帮助:-)

在这里，您可以在您的硬件上对所有受支持的哈希值进行基准测试，这些哈希值由您的node.js版本所支持。有些是加密的，有些只是用于校验和。每个算法计算“Hello World”100万次。每个算法可能需要大约1-15秒(在标准谷歌计算引擎上使用Node.js 4.2.2测试)。

for(var i1=0;i1<crypto.getHashes().length;i1++){
  var Algh=crypto.getHashes()[i1];
  console.time(Algh);
  for(var i2=0;i2<1000000;i2++){
    crypto.createHash(Algh).update("Hello World").digest("hex");
  }
  console.timeEnd(Algh);  
}

Result: DSA: 1992ms DSA-SHA: 1960ms DSA-SHA1: 2062ms DSA-SHA1-old: 2124ms RSA-MD4: 1893ms RSA-MD5: 1982ms RSA-MDC2: 2797ms RSA-RIPEMD160: 2101ms RSA-SHA: 1948ms RSA-SHA1: 1908ms RSA-SHA1-2: 2042ms RSA-SHA224: 2176ms RSA-SHA256: 2158ms RSA-SHA384: 2290ms RSA-SHA512: 2357ms dsaEncryption: 1936ms dsaWithSHA: 1910ms dsaWithSHA1: 1926ms dss1: 1928ms ecdsa-with-SHA1: 1880ms md4: 1833ms md4WithRSAEncryption: 1925ms md5: 1863ms md5WithRSAEncryption: 1923ms mdc2: 2729ms mdc2WithRSA: 2890ms ripemd: 2101ms ripemd160: 2153ms ripemd160WithRSA: 2210ms rmd160: 2146ms sha: 1929ms sha1: 1880ms sha1WithRSAEncryption: 1957ms sha224: 2121ms sha224WithRSAEncryption: 2290ms sha256: 2134ms sha256WithRSAEncryption: 2190ms sha384: 2181ms sha384WithRSAEncryption: 2343ms sha512: 2371ms sha512WithRSAEncryption: 2434ms shaWithRSAEncryption: 1966ms ssl2-md5: 1853ms ssl3-md5: 1868ms ssl3-sha1: 1971ms whirlpool: 2578ms

我使用的是blueimp-md5，它“兼容服务器端环境，如Node.js，模块加载器，如RequireJS, Browserify或webpack和所有网络浏览器。”

像这样使用它:

var md5 = require("blueimp-md5");

var myHashedString = createHash('GreensterRox');

createHash(myString){
    return md5(myString);
}

如果在公开场合传递散列值，对它们加盐总是一个好主意，这样人们就更难重新创建它们:

createHash(myString){
    var salt = 'HnasBzbxH9';
    return md5(myString+salt);
}

crypto模块使这非常容易。

设置:

// import crypto from 'crypto';
const crypto = require('crypto');

const sha256 = x => crypto.createHash('sha256').update(x, 'utf8').digest('hex');

用法:

sha256('Hello, world. ');