// Create a new PrivateKey based on a random element on the field of a curve.
func NewKeyFromInt(c *bitelliptic.BitCurve, k *big.Int) *PrivateKey {
priv := new(PrivateKey)
priv.PublicKey.BitCurve = c
priv.D = k
priv.PublicKey.X, priv.PublicKey.Y = c.ScalarBaseMult(k.Bytes())
return priv
}
func testKeyGeneration(t *testing.T, c *bitelliptic.BitCurve, tag string) {
priv, err := GenerateKey(c, rand.Reader)
if err != nil {
t.Errorf("%s: error: %s", tag, err)
return
}
if !c.IsOnCurve(priv.PublicKey.X, priv.PublicKey.Y) {
t.Errorf("%s: public key invalid: %s", tag, err)
}
}