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package sr25519_test
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/crypto"
"github.com/tendermint/tendermint/crypto/sr25519"
)
func TestSignAndValidateSr25519(t *testing.T) {
privKey := sr25519.GenPrivKey()
pubKey := privKey.PubKey()
msg := crypto.CRandBytes(128)
sig, err := privKey.Sign(msg)
require.Nil(t, err)
// Test the signature
assert.True(t, pubKey.VerifyBytes(msg, sig))
assert.True(t, pubKey.VerifyBytes(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.VerifyBytes(msg, sig))
}