Brainwallet signature generation upgraded to latest bitcoinjs API

test/integration/brainwallet_bitcoinsig.js

@@ -0,0 +1,52 @@
+/**
+ * 
+ * Forked by Kevin Tam, https://github.com/brainwallet/brainwallet.github.io/blob/master/js/bitcoinsig.js on 08/08/2014
+ * which was based on Bitcoin 0.13. The test here is updated to bitcoinjs-lib master, with the intention
+ * of keeping up to date with latest APIs
+ */
+
+var Base58 = require('bs58');
+var assert = require('assert');
+var Bitcoin = require('../../')
+var BigInteger = require('bigi');
+
+
+describe('bitcoin_sig', function() {
+
+ function sha256(b) {
+ return Bitcoin.crypto.sha256(b);
+ }
+ var k = '5JeWZ1z6sRcLTJXdQEDdB986E6XfLAkj9CgNE4EHzr5GmjrVFpf';
+ var a = '17mDAmveV5wBwxajBsY7g1trbMW1DVWcgL';
+ var s = 'HDiv4Oe9SjM1FFVbKk4m3N34efYiRgkQGGoEm564ldYt44jHVTuX23+WnihNMi4vujvpUs1M529P3kftjDezn9E=';
+ var m = 'test message';
+
+ var secp256k1 = Bitcoin.ECKey.curve;
+ var hash = Bitcoin.Message.magicHash(m, {magicPrefix: '\x18Bitcoin Signed Message:\n'});
+
+ it('can verify a pre-signed message', function(done) {
+ // Part un - Verify pre-signed message
+ var siginfo = new Bitcoin.ECSignature.parseCompact(new Buffer(s, "base64"));
+ assert.equal(hash.toString("base64"), "EiYXnd9jg/vPUQLJSSU4tyBsc5rnnrBkQIwqvWfTm+0=");
+ // Is there way to do this without pulling in BigInteger?
+ var e = BigInteger.fromBuffer(hash);
+ var pubkeyQ = Bitcoin.ecdsa.recoverPubKey(secp256k1, e, siginfo.signature, siginfo.i);
+ var pubkey = new Bitcoin.ECPubKey(pubkeyQ, siginfo.compressed);
+ assert.equal(pubkey.getAddress().toBase58Check(), a, "Extract pub address from signature should match pub addr");
+ var v1 = Bitcoin.ecdsa.verify(secp256k1, hash, siginfo.signature, pubkeyQ);
+ assert(v1, "Signature should pass");
+ done();
+ });
+
+ it('can sign a message and verify the signed messaged', function(done) {
+ var payload = Base58.decode(k);
+ var priv = Bitcoin.ECKey.fromWIF(k)
+ var sig = priv.sign(hash);
+ var e = BigInteger.fromBuffer(hash);
+ var pubkeyQ = Bitcoin.ecdsa.recoverPubKey(secp256k1, e, sig, 1);
+ var v2 = Bitcoin.ecdsa.verify(secp256k1, hash, sig, pubkeyQ);
+ assert(v2, "Signature should pass after re-signing")
+ done();
+ })
+
+})