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package ed25519_test
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/crypto"
"github.com/tendermint/tendermint/crypto/ed25519"
)
func TestSignAndValidateEd25519(t *testing.T) {
privKey := ed25519.GenPrivKey()
pubKey := privKey.PubKey()
msg := crypto.CRandBytes(128)
sig, err := privKey.Sign(msg)
require.Nil(t, err)
// Test the signature
assert.True(t, pubKey.VerifySignature(msg, sig))
// Mutate the signature, just one bit.
// TODO: Replace this with a much better fuzzer, tendermint/ed25519/issues/10
sig[7] ^= byte(0x01)
assert.False(t, pubKey.VerifySignature(msg, sig))
}
func TestBatchSafe(t *testing.T) {
v := ed25519.NewBatchVerifier()
for i := 0; i <= 38; i++ {
priv := ed25519.GenPrivKey()
pub := priv.PubKey()
var msg []byte
if i%2 == 0 {
msg = []byte("easter")
} else {
msg = []byte("egg")
}
sig, err := priv.Sign(msg)
require.NoError(t, err)
err = v.Add(pub, msg, sig)
require.NoError(t, err)
}
require.True(t, v.Verify())
}