package crypto import ( "crypto/rand" "testing" "github.com/cloudflare/circl/sign/ed448" "github.com/libp2p/go-libp2p/core/crypto/pb" "google.golang.org/protobuf/proto" ) func TestEd448BasicSignAndVerify(t *testing.T) { priv, pub, err := GenerateEd25519Key(rand.Reader) if err != nil { t.Fatal(err) } data := []byte("hello! and welcome to some awesome crypto primitives") sig, err := priv.Sign(data) if err != nil { t.Fatal(err) } ok, err := pub.Verify(data, sig) if err != nil { t.Fatal(err) } if !ok { t.Fatal("signature didn't match") } // change data data[0] = ^data[0] ok, err = pub.Verify(data, sig) if err != nil { t.Fatal(err) } if ok { t.Fatal("signature matched and shouldn't") } } func TestEd448SignZero(t *testing.T) { priv, pub, err := GenerateEd25519Key(rand.Reader) if err != nil { t.Fatal(err) } data := make([]byte, 0) sig, err := priv.Sign(data) if err != nil { t.Fatal(err) } ok, err := pub.Verify(data, sig) if err != nil { t.Fatal(err) } if !ok { t.Fatal("signature didn't match") } } func TestEd448MarshalLoop(t *testing.T) { priv, pub, err := GenerateEd448Key(rand.Reader) if err != nil { t.Fatal(err) } t.Run("PrivateKey", func(t *testing.T) { for name, f := range map[string]func() ([]byte, error){ "Marshal": func() ([]byte, error) { return MarshalPrivateKey(priv) }, "Redundant": func() ([]byte, error) { data, err := priv.Raw() if err != nil { t.Fatal(err) } data = append(data, data[len(data)-ed448.PublicKeySize:]...) return proto.Marshal(&pb.PrivateKey{ Type: priv.Type().Enum(), Data: data, }) }, } { t.Run(name, func(t *testing.T) { bts, err := f() if err != nil { t.Fatal(err) } privNew, err := UnmarshalPrivateKey(bts) if err != nil { t.Fatal(err) } if !priv.Equals(privNew) || !privNew.Equals(priv) { t.Fatal("keys are not equal") } msg := []byte("My child, my sister,\nThink of the rapture\nOf living together there!") signed, err := privNew.Sign(msg) if err != nil { t.Fatal(err) } ok, err := privNew.GetPublic().Verify(msg, signed) if err != nil { t.Fatal(err) } if !ok { t.Fatal("signature didn't match") } }) } }) t.Run("PublicKey", func(t *testing.T) { for name, f := range map[string]func() ([]byte, error){ "Marshal": func() ([]byte, error) { return MarshalPublicKey(pub) }, } { t.Run(name, func(t *testing.T) { bts, err := f() if err != nil { t.Fatal(err) } pubNew, err := UnmarshalPublicKey(bts) if err != nil { t.Fatal(err) } if !pub.Equals(pubNew) || !pubNew.Equals(pub) { t.Fatal("keys are not equal") } }) } }) } func TestEd448UnmarshalErrors(t *testing.T) { t.Run("PublicKey", func(t *testing.T) { t.Run("Invalid data length", func(t *testing.T) { data, err := proto.Marshal(&pb.PublicKey{ Type: pb.KeyType_Ed448.Enum(), Data: []byte{74}, }) if err != nil { t.Fatal(err) } if _, err := UnmarshalPublicKey(data); err == nil { t.Fatal("expected an error") } }) }) t.Run("PrivateKey", func(t *testing.T) { t.Run("Redundant public key mismatch", func(t *testing.T) { priv, _, err := GenerateEd448Key(rand.Reader) if err != nil { t.Fatal(err) } data, err := priv.Raw() if err != nil { t.Fatal(err) } // Append the private key instead of the public key. data = append(data, data[:ed448.PublicKeySize]...) b, err := proto.Marshal(&pb.PrivateKey{ Type: priv.Type().Enum(), Data: data, }) if err != nil { t.Fatal(err) } _, err = UnmarshalPrivateKey(b) if err == nil { t.Fatal("expected an error") } if err.Error() != "expected redundant ed448 public key to be redundant" { t.Fatalf("invalid error received: %s", err.Error()) } }) t.Run("Invalid data length", func(t *testing.T) { data, err := proto.Marshal(&pb.PrivateKey{ Type: pb.KeyType_Ed448.Enum(), Data: []byte{74}, }) if err != nil { t.Fatal(err) } _, err = UnmarshalPrivateKey(data) if err == nil { t.Fatal("expected an error") } }) }) }