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53 lines
1.2 KiB
JavaScript
53 lines
1.2 KiB
JavaScript
// const sha3 = require('js-sha3').sha3_256
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const sha3 = require('js-sha3').keccak_256
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const uts46 = require('idna-uts46')
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// const SHA3 = require('crypto-js/sha3')
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module.exports = function namehash (inputName) {
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let node = new Buffer('0000000000000000000000000000000000000000000000000000000000000000', 'hex')
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if(inputName && inputName !== '') {
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let name = normalize(inputName)
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var labels = name.split('.')
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for(var i = labels.length - 1; i >= 0; i--) {
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const combined = new Buffer([node, sha3(labels[i])])
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node = sha3(combined)
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}
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}
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return '0x' + node.toString('hex')
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console.log('called with ' + inputName)
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// Reject empty names:
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if (!inputName || inputName === '') {
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let result = ''
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for (let i = 0; i < 32; i++) {
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result += '00'
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}
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return result
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}
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name = normalize(inputName)
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const split = name.split('.')
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const label = split.shift()
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const remainder = split.join('.')
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console.log('finishing with ', typeof sha3(label))
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console.log(sha3(label))
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return sha3(namehash(remainder) + sha3(label))
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}
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/*
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function sha3 (input) {
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return SHA3(input, { outputLength: 256 })
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}
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*/
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function normalize(name) {
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return uts46.toUnicode(name, {useStd3ASCII: true, transitional: false})
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}
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