node.js hash string?

Question

I have a string that I want to hash. What\'s the easiest way to generate the hash in node.js?

The hash is for versioning, not security.

Answer 1

function md5(a) {
    var r = 0,
        c = "";
    return h(a);

    function h(t) {
        return u(l(m(t)))
    }

    function l(t) {
        return p(g(f(t), 8 * t.length))
    }

    function u(t) {
        for (var e, i = r ? "0123456789ABCDEF" : "0123456789abcdef", n = "", o = 0; o < t.length; o++)
            e = t.charCodeAt(o),
            n += i.charAt(e >>> 4 & 15) + i.charAt(15 & e);
        return n
    }

    function m(t) {
        for (var e, i, n = "", o = -1; ++o < t.length;)
            e = t.charCodeAt(o),
            i = o + 1 < t.length ? t.charCodeAt(o + 1) : 0,
            55296 <= e && e <= 56319 && 56320 <= i && i <= 57343 && (e = 65536 + ((1023 & e) << 10) + (1023 & i),
                o++),
            e <= 127 ? n += String.fromCharCode(e) : e <= 2047 ? n += String.fromCharCode(192 | e >>> 6 & 31, 128 | 63 & e) : e <= 65535 ? n += String.fromCharCode(224 | e >>> 12 & 15, 128 | e >>> 6 & 63, 128 | 63 & e) : e <= 2097151 && (n += String.fromCharCode(240 | e >>> 18 & 7, 128 | e >>> 12 & 63, 128 | e >>> 6 & 63, 128 | 63 & e));
        return n
    }

    function f(t) {
        for (var e = Array(t.length >> 2), i = 0; i < e.length; i++)
            e[i] = 0;
        for (i = 0; i < 8 * t.length; i += 8)
            e[i >> 5] |= (255 & t.charCodeAt(i / 8)) << i % 32;
        return e
    }

    function p(t) {
        for (var e = "", i = 0; i < 32 * t.length; i += 8)
            e += String.fromCharCode(t[i >> 5] >>> i % 32 & 255);
        return e
    }

    function g(t, e) {
        t[e >> 5] |= 128 << e % 32,
            t[14 + (e + 64 >>> 9 << 4)] = e;
        for (var i = 1732584193, n = -271733879, o = -1732584194, s = 271733878, a = 0; a < t.length; a += 16) {
            var r = i,
                c = n,
                h = o,
                l = s;
            n = E(n = E(n = E(n = E(n = N(n = N(n = N(n = N(n = C(n = C(n = C(n = C(n = S(n = S(n = S(n = S(n, o = S(o, s = S(s, i = S(i, n, o, s, t[a + 0], 7, -680876936), n, o, t[a + 1], 12, -389564586), i, n, t[a + 2], 17, 606105819), s, i, t[a + 3], 22, -1044525330), o = S(o, s = S(s, i = S(i, n, o, s, t[a + 4], 7, -176418897), n, o, t[a + 5], 12, 1200080426), i, n, t[a + 6], 17, -1473231341), s, i, t[a + 7], 22, -45705983), o = S(o, s = S(s, i = S(i, n, o, s, t[a + 8], 7, 1770035416), n, o, t[a + 9], 12, -1958414417), i, n, t[a + 10], 17, -42063), s, i, t[a + 11], 22, -1990404162), o = S(o, s = S(s, i = S(i, n, o, s, t[a + 12], 7, 1804603682), n, o, t[a + 13], 12, -40341101), i, n, t[a + 14], 17, -1502002290), s, i, t[a + 15], 22, 1236535329), o = C(o, s = C(s, i = C(i, n, o, s, t[a + 1], 5, -165796510), n, o, t[a + 6], 9, -1069501632), i, n, t[a + 11], 14, 643717713), s, i, t[a + 0], 20, -373897302), o = C(o, s = C(s, i = C(i, n, o, s, t[a + 5], 5, -701558691), n, o, t[a + 10], 9, 38016083), i, n, t[a + 15], 14, -660478335), s, i, t[a + 4], 20, -405537848), o = C(o, s = C(s, i = C(i, n, o, s, t[a + 9], 5, 568446438), n, o, t[a + 14], 9, -1019803690), i, n, t[a + 3], 14, -187363961), s, i, t[a + 8], 20, 1163531501), o = C(o, s = C(s, i = C(i, n, o, s, t[a + 13], 5, -1444681467), n, o, t[a + 2], 9, -51403784), i, n, t[a + 7], 14, 1735328473), s, i, t[a + 12], 20, -1926607734), o = N(o, s = N(s, i = N(i, n, o, s, t[a + 5], 4, -378558), n, o, t[a + 8], 11, -2022574463), i, n, t[a + 11], 16, 1839030562), s, i, t[a + 14], 23, -35309556), o = N(o, s = N(s, i = N(i, n, o, s, t[a + 1], 4, -1530992060), n, o, t[a + 4], 11, 1272893353), i, n, t[a + 7], 16, -155497632), s, i, t[a + 10], 23, -1094730640), o = N(o, s = N(s, i = N(i, n, o, s, t[a + 13], 4, 681279174), n, o, t[a + 0], 11, -358537222), i, n, t[a + 3], 16, -722521979), s, i, t[a + 6], 23, 76029189), o = N(o, s = N(s, i = N(i, n, o, s, t[a + 9], 4, -640364487), n, o, t[a + 12], 11, -421815835), i, n, t[a + 15], 16, 530742520), s, i, t[a + 2], 23, -995338651), o = E(o, s = E(s, i = E(i, n, o, s, t[a + 0], 6, -198630844), n, o, t[a + 7], 10, 1126891415), i, n, t[a + 14], 15, -1416354905), s, i, t[a + 5], 21, -57434055), o = E(o, s = E(s, i = E(i, n, o, s, t[a + 12], 6, 1700485571), n, o, t[a + 3], 10, -1894986606), i, n, t[a + 10], 15, -1051523), s, i, t[a + 1], 21, -2054922799), o = E(o, s = E(s, i = E(i, n, o, s, t[a + 8], 6, 1873313359), n, o, t[a + 15], 10, -30611744), i, n, t[a + 6], 15, -1560198380), s, i, t[a + 13], 21, 1309151649), o = E(o, s = E(s, i = E(i, n, o, s, t[a + 4], 6, -145523070), n, o, t[a + 11], 10, -1120210379), i, n, t[a + 2], 15, 718787259), s, i, t[a + 9], 21, -343485551),
                i = v(i, r),
                n = v(n, c),
                o = v(o, h),
                s = v(s, l)
        }
        return [i, n, o, s]
    }

    function _(t, e, i, n, o, s) {
        return v((a = v(v(e, t), v(n, s))) << (r = o) | a >>> 32 - r, i);
        var a, r
    }

    function S(t, e, i, n, o, s, a) {
        return _(e & i | ~e & n, t, e, o, s, a)
    }

    function C(t, e, i, n, o, s, a) {
        return _(e & n | i & ~n, t, e, o, s, a)
    }

    function N(t, e, i, n, o, s, a) {
        return _(e ^ i ^ n, t, e, o, s, a)
    }

    function E(t, e, i, n, o, s, a) {
        return _(i ^ (e | ~n), t, e, o, s, a)
    }

    function v(t, e) {
        var i = (65535 & t) + (65535 & e);
        return (t >> 16) + (e >> 16) + (i >> 16) << 16 | 65535 & i
    }
}
string = 'hello';
console.log(md5(string));

Answer 2

Here you can benchmark all supported hashes on your hardware, supported by your version of node.js. Some are cryptographic, and some is just for a checksum. Its calculating "Hello World" 1 million times for each algorithm. It may take around 1-15 seconds for each algorithm (Tested on the Standard Google Computing Engine with Node.js 4.2.2).

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

Answer 3

Considering the thoughts from http://www.thoughtcrime.org/blog/the-cryptographic-doom-principle/ (in short: FIRST encrypt, THEN authenticate. Afterwards FIRST verify, THEN decrypt) I have implemented the following solution in node.js:

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); 
    }
}

It can be tested with:

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

Hope this helps :-)

Answer 4

Simple One Liners:

If you want UTF8 text hash:

const hash = require('crypto').createHash('sha256').update('Hash me', 'utf8').digest('hex');

If you want to get the same hash with Python, PHP, Perl, Github:

const hash = require('crypto').createHash('sha256').update('Hash me', 'binary').digest('hex');

You can also replace 'sha256' with 'sha1', 'md5', 'sha256', 'sha512'

Answer 5

Take a look at crypto.createHash(algorithm)

var filename = process.argv[2];
var crypto = require('crypto');
var fs = require('fs');

var md5sum = crypto.createHash('md5');

var s = fs.ReadStream(filename);
s.on('data', function(d) {
  md5sum.update(d);
});

s.on('end', function() {
  var d = md5sum.digest('hex');
  console.log(d + '  ' + filename);
});