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verify_test.go
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verify_test.go
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package crypto
import (
"crypto/rand"
"testing"
"github.com/mit-dci/go-bverify/crypto/btcec"
"github.com/mit-dci/go-bverify/crypto/fastsha256"
"github.com/mit-dci/go-bverify/crypto/sig64"
)
func TestVerify(t *testing.T) {
key := [32]byte{}
rand.Read(key[:])
priv, pub := btcec.PrivKeyFromBytes(btcec.S256(), key[:])
var pk [33]byte
copy(pk[:], pub.SerializeCompressed())
hash := fastsha256.Sum256([]byte("hello world"))
sig, err := priv.Sign(hash[:])
if err != nil {
t.Error(err)
return
}
csig, err := sig64.SigCompress(sig.Serialize())
if err != nil {
t.Error(err)
return
}
err = VerifySig([]byte("hello world"), pk, csig)
if err != nil {
t.Error(err)
return
}
// damage signature
damagedCsig := [64]byte{}
copy(damagedCsig[:], csig[:])
copy(damagedCsig[1:], []byte{0x00, 0x00, 0x00, 0x00})
err = VerifySig([]byte("hello world"), pk, damagedCsig)
if err == nil {
t.Error("Invalid signature should error out but doesn't")
return
}
// malformed signature
err = VerifySig([]byte("hello world"), pk, [64]byte{0x00, 0x00, 0x00, 0x00})
if err == nil {
t.Error("Malformed signature should error out but doesn't")
return
}
// malformed pubkey
err = VerifySig([]byte("hello world"), [33]byte{0x00, 0x00, 0x00, 0x00}, csig)
if err == nil {
t.Error("Malformed pubkey should error out but doesn't")
return
}
}