51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
var crypto = require('./crypto')
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var ecdsa = require('./ecdsa')
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var enforceType = require('./types')
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var networks = require('./networks')
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var Address = require('./address')
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var ecurve = require('ecurve')
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var curve = ecurve.getCurveByName('secp256k1')
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function ECPubKey(Q, compressed) {
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if (compressed === undefined) compressed = true
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enforceType(ecurve.Point, Q)
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enforceType('Boolean', compressed)
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this.compressed = compressed
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this.Q = Q
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}
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// Static constructors
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ECPubKey.fromBuffer = function(buffer) {
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var Q = ecurve.Point.decodeFrom(curve, buffer)
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return new ECPubKey(Q, Q.compressed)
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}
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ECPubKey.fromHex = function(hex) {
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return ECPubKey.fromBuffer(new Buffer(hex, 'hex'))
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}
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// Operations
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ECPubKey.prototype.getAddress = function(network) {
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network = network || networks.bitcoin
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return new Address(crypto.hash160(this.toBuffer()), network.pubKeyHash)
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}
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ECPubKey.prototype.verify = function(hash, signature) {
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return ecdsa.verify(curve, hash, signature, this.Q)
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}
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// Export functions
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ECPubKey.prototype.toBuffer = function() {
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return this.Q.getEncoded(this.compressed)
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}
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ECPubKey.prototype.toHex = function() {
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return this.toBuffer().toString('hex')
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}
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module.exports = ECPubKey
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