}).then(function (result) {
var signature = bitcoin.ECSignature.fromDER(
new Buffer('30' + result.bytes(1).toString(HEX), 'hex')
);
var i;
if (dev.features.signMessageRecoveryParam) {
i = result.byteAt(0) & 0x01;
} else {
i = bitcoin.ecdsa.calcPubKeyRecoveryParam(
BigInteger.fromBuffer(bitcoin.message.magicHash(msg_plain)),
{ r: signature.r, s: signature.s },
pk.keyPair.Q
);
}
return {
r: signature.r,
s: signature.s,
i: i
};
});
return pubkeys.some(pubkey => {
const Q = ECPubKey.fromBuffer(pubkey).Q;
return ecdsa.verify(curve, hash, signature, Q);
});
Key.prototype.sign = function (buf) {
return Bitcoin.ecdsa.sign(Bitcoin.ECKey.curve, buf, this.d);
};