75 lines
1.6 KiB
JavaScript
75 lines
1.6 KiB
JavaScript
'use strict';
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var native = require('../lib/native.js');
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var crypto = require('crypto');
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native
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._hashcash({
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alg: 'SHA-256',
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nonce: '00',
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needle: '0000',
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start: 0,
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end: 2
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})
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.then(function(hashcash) {
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if ('00:76de' !== hashcash) {
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throw new Error('hashcash algorthim changed');
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}
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console.info('PASS: known hash solves correctly');
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return native
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._hashcash({
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alg: 'SHA-256',
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nonce: '10',
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needle: '',
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start: 0,
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end: 2
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})
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.then(function(hashcash) {
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if ('10:00' !== hashcash) {
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throw new Error('hashcash algorthim changed');
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}
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console.info('PASS: empty hash solves correctly');
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var now = Date.now();
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var nonce = '20';
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var needle = crypto
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.randomBytes(3)
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.toString('hex')
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.slice(0, 5);
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native
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._hashcash({
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alg: 'SHA-256',
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nonce: nonce,
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needle: needle,
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start: 0,
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end: Math.ceil(needle.length / 2)
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})
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.then(function(hashcash) {
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var later = Date.now();
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var parts = hashcash.split(':');
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var answer = parts[1];
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if (parts[0] !== nonce) {
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throw new Error('incorrect nonce');
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}
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var haystack = crypto
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.createHash('sha256')
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.update(Buffer.from(nonce + answer, 'hex'))
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.digest()
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.slice(0, Math.ceil(needle.length / 2));
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if (
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-1 === haystack.indexOf(Buffer.from(needle, 'hex'))
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) {
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throw new Error('incorrect solution');
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}
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if (later - now > 2000) {
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throw new Error('took too long to solve');
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}
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console.info(
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'PASS: rando hash solves correctly (and in good time - %dms)',
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later - now
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);
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});
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});
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});
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