return new Promise(function (resolve, reject) {
var key = this.hdnode.keyPair;
var sig = secp256k1._malloc(64);
var msg = secp256k1._malloc(32);
var seckey = secp256k1._malloc(32);
var start = key.d.toByteArray().length - 32;
var slice;
if (start >= 0) { // remove excess zeroes
slice = key.d.toByteArray().slice(start);
} else { // add missing zeroes
slice = key.d.toByteArray();
while (slice.length < 32) slice.unshift(0);
}
secp256k1.writeArrayToMemory(slice, seckey);
var i;
for (i = 0; i < 32; ++i) {
secp256k1.setValue(msg + i, msgIn[i], 'i8');
}
if (secp256k1._secp256k1_schnorr_sign(
secp256k1ctx, sig, msg, seckey, 0, 0
) !== 1) {
reject('secp256k1 Schnorr sign failed');
}
var len = 64;
var ret = new Buffer(len);
for (i = 0; i < len; ++i) {
ret.writeUInt8(secp256k1.getValue(sig + i, 'i8') & 0xff, i);
}
secp256k1._free(sig);
secp256k1._free(msg);
secp256k1._free(seckey);
resolve(ret);
}.bind(this));
return new Promise(function (resolve, reject) {
var key = _this.hdnode.keyPair;
var sig, siglenPointer;
if (schnorr) {
sig = secp256k1._malloc(64);
} else {
sig = secp256k1._malloc(128);
siglenPointer = secp256k1._malloc(4);
}
var msg = secp256k1._malloc(32);
var seckey = secp256k1._malloc(32);
var start = key.d.toByteArray().length - 32;
var slice;
if (start >= 0) { // remove excess zeroes
slice = key.d.toByteArray().slice(start);
} else { // add missing zeroes
slice = key.d.toByteArray();
while (slice.length < 32) slice.unshift(0);
}
secp256k1.writeArrayToMemory(slice, seckey);
if (!schnorr) {
secp256k1.setValue(siglenPointer, 128, 'i32');
}
var i;
for (i = 0; i < 32; ++i) {
secp256k1.setValue(msg + i, msgIn[i], 'i8');
}
var len = -1;
if (schnorr) {
if (secp256k1._secp256k1_schnorr_sign(
secp256k1ctx, sig, msg, seckey, 0, 0
) !== 1) {
reject('secp256k1 Schnorr sign failed');
} else {
len = 64;
}
} else {
len = -1;
var sigOpaque = secp256k1._malloc(64);
if (secp256k1._secp256k1_ecdsa_sign(
secp256k1ctx, sigOpaque, msg, seckey, 0, 0
) !== 1) {
reject('secp256k1 ECDSA sign failed');
} else if (secp256k1._secp256k1_ecdsa_signature_serialize_der(
secp256k1ctx, sig, siglenPointer, sigOpaque
) !== 1) {
reject('secp256k1 ECDSA signature serialize failed');
} else {
len = secp256k1.getValue(siglenPointer, 'i32');
}
secp256k1._free(sigOpaque);
}
if (len !== -1) {
var ret = new Buffer(len);
for (i = 0; i < len; ++i) {
ret.writeUInt8(secp256k1.getValue(sig + i, 'i8') & 0xff, i);
}
if (schnorr) {
resolve(ret);
} else {
resolve(bitcoin.ECSignature.fromDER(ret));
}
}
secp256k1._free(sig);
if (!schnorr) {
secp256k1._free(siglenPointer);
}
secp256k1._free(msg);
secp256k1._free(seckey);
});