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edwards25519: update TestScalarSetBytesWithClamping

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With jedisct1/libsodium.js#256 fixed, use non-Montgomery representation.
This commit is contained in:
Filippo Valsorda 2021-04-05 23:14:53 +02:00
parent c882e8e8ab
commit c6be47d677
1 changed files with 7 additions and 9 deletions
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16
scalar_test.go
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@ -106,31 +106,29 @@ func TestScalarSetUniformBytes(t *testing.T) {
}
func TestScalarSetBytesWithClamping(t *testing.T) {
// Generated with libsodium.js 1.0.18 crypto_scalarmult_base.
// Replace with crypto_scalarmult_ed25519_base vectors once
// https://github.com/jedisct1/libsodium.js/issues/256 is fixed.
// Generated with libsodium.js 1.0.18 crypto_scalarmult_ed25519_base.
random := "633d368491364dc9cd4c1bf891b1d59460face1644813240a313e61f2c88216e"
s := (&Scalar{}).SetBytesWithClamping(decodeHex(random))
p := (&Point{}).ScalarBaseMult(s)
want := "f39e4e2953998c47237364569fa7356ce4d22f9ae51aa8bb40d088fff7c38057"
if got := hex.EncodeToString(p.BytesMontgomery()); got != want {
want := "1d87a9026fd0126a5736fe1628c95dd419172b5b618457e041c9c861b2494a94"
if got := hex.EncodeToString(p.Bytes()); got != want {
t.Errorf("random: got %q, want %q", got, want)
}
zero := "0000000000000000000000000000000000000000000000000000000000000000"
s = (&Scalar{}).SetBytesWithClamping(decodeHex(zero))
p = (&Point{}).ScalarBaseMult(s)
want = "2fe57da347cd62431528daac5fbb290730fff684afc4cfc2ed90995f58cb3b74"
if got := hex.EncodeToString(p.BytesMontgomery()); got != want {
want = "693e47972caf527c7883ad1b39822f026f47db2ab0e1919955b8993aa04411d1"
if got := hex.EncodeToString(p.Bytes()); got != want {
t.Errorf("zero: got %q, want %q", got, want)
}
one := "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
s = (&Scalar{}).SetBytesWithClamping(decodeHex(one))
p = (&Point{}).ScalarBaseMult(s)
want = "847c0d2c375234f365e660955187a3735a0f7613d1609d3a6a4d8c53aeaa5a22"
if got := hex.EncodeToString(p.BytesMontgomery()); got != want {
want = "12e9a68b73fd5aacdbcaf3e88c46fea6ebedb1aa84eed1842f07f8edab65e3a7"
if got := hex.EncodeToString(p.Bytes()); got != want {
t.Errorf("one: got %q, want %q", got, want)
}
}