#hash-util A hash helper, including md5, sha1, sha256, sha512, sortable-hash and geohash.

Install

npm install hash-util

API

Node.js crypto hash wrapper. Default encoding is 'hex'.

• hash.md5(str, [encoding])
• hash.sha1(str, [encoding])
• hash.sha256(str, [encoding])
• hash.sha512(str, [encoding])

Sortable-hash wrapper.

• hash.sortable.encode(values[, options])
• hash.sortable.decode(string, numValues)

Geohash.

• hash.geo.encode(coordinate, precision) // coordinate => { lng: 116.389550, lat: 39.928167 }
• hash.geo.decode(string)

Usage

var hash = require('hash-util');

var str = 'abcdefg.....';

console.log(hash.md5(str));
console.log(hash.sha1(str));
console.log(hash.sha256(str));
console.log(hash.sha512(str));

console.log(hash.md5(str, 'base64'));
console.log(hash.sha1(str, 'base64'));
console.log(hash.sha256(str, 'base64'));
console.log(hash.sha512(str, 'base64'));

var sh = hash.sortable.encode([10, 10, -10]);
console.log(sh); // => skfsmq4xj7d9
console.log(hash.sortable.decode(sh, 3)); // => [ 9.999942779541016, 9.999942779541016, -9.999942779541016 ]

var biggerHash  = hash.sortable.encode([10, 10, -10], 35);
console.log(biggerHash); // => skfsmq4xj7d9v2fsmq4xj7d9v2fsmq4xj3h
console.log(hash.sortable.decode(biggerHash, 3)); // => [ 10, 10, -10 ]

var corrd = { lng: 116.389550, lat: 39.928167 },
    gh = hash.geo.encode(corrd, 8);
console.log(gh); // => wx4g0s8q
console.log(hash.geo.decode(gh)); // => { lng: 116.38967514038086, lat: 39.928178787231445 }