Method Marshal

crypto/secp256k1/curve.go:286–293

Marshal converts a point into the form specified in section 4.3.6 of ANSI X9.62.

(x, y *big.Int)

// Marshal converts a point into the form specified in section 4.3.6 of ANSI
// X9.62.
func (BitCurve *BitCurve) Marshal(x, y *big.Int) []byte {
	byteLen := (BitCurve.BitSize + 7) >> 3
	ret := make([]byte, 1+2*byteLen)
	ret[0] = 4 // uncompressed point flag
	readBits(x, ret[1:1+byteLen])
	readBits(y, ret[1+byteLen:])
	return ret
}

// Unmarshal converts a point, serialised by Marshal, into an x, y pair. On
// error, x = nil.