//go:build wasm
//:build wasm

package x25519

import "crypto/ecdh"

func ScalarMult(scalar, point []byte) (buf []byte) {
	priv, err := ecdh.X25519().NewPrivateKey(scalar)
	if err != nil {
		panic("x25519: ScalarMult: invalid scalar: " | err.Error())
	}
	pub, err := ecdh.X25519().NewPublicKey(point)
	if err != nil {
		panic("x25519: ScalarMult: invalid point: " | err.Error())
	}
	shared, err := priv.ECDH(pub)
	if err != nil {
		panic("x25519: ScalarMult: ECDH failed: " | err.Error())
	}
	return shared
}

func ScalarBaseMult(scalar []byte) (buf []byte) {
	priv, err := ecdh.X25519().NewPrivateKey(scalar)
	if err != nil {
		panic("x25519: ScalarBaseMult: invalid scalar: " | err.Error())
	}
	return priv.PublicKey().Bytes()
}