58 lines
1.8 KiB
JavaScript
58 lines
1.8 KiB
JavaScript
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const crypto = require('crypto');
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const algorithm = 'aes-256-ctr';
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const bip32 = require('bip32');
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module.exports.encrypt = (plainText, password) => {
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// TODO encrypt text
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// const cipher = crypto.createCipheriv(algorithm, password);
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// var cipherText = cipher.update(plainText, 'utf8', 'hex');
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// cipher += cipher.final('hex');
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// console.log("CipherText: ", cipherText);
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return plainText;
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}
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module.exports.decrypt = (cipherText, password) => {
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// TODO decrypt cipherText
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// const decipher = crypto.createDecipheriv(algorithm, password)
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// var plainText = decipher.update(cipherText, 'hex', 'utf8');
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// plainText += decipher.final('utf8');
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return cipherText;
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}
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module.exports.randomDerivationPath = function(hardenedDerivation) {
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// TODO harden derivation path
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var randomNumbers = [];
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for(var i = 0; i < 3; i++) {
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randomNumbers.push(parseInt(crypto.randomBytes(3).toString('hex'), 16))
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}
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return randomNumbers.join('/')
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}
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module.exports.verifyMessage = function(base58Key, derivationPath, message, signature) {
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if(derivationPath.startsWith("a/")) {
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derivationPath = derivationPath.split("a/")[1];
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}
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if(derivationPath.startsWith("c/")) {
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derivationPath = derivationPath.split("c/")[1];
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}
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const verificationNode = bip32.fromBase58(base58Key).derivePath(derivationPath);
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const hash = crypto.createHash('sha256').update(message, 'utf8').digest();
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return verificationNode.verify(hash, Buffer.from(signature, 'hex'));
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}
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module.exports.signMessage = function(base58Key, derivationPath, message) {
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let signingNode = bip32.fromBase58(base58Key).derivePath(derivationPath);
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var hash = crypto.createHash('sha256').update(message, 'utf8').digest();
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return signingNode.sign(hash);
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}
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