package whisper import ( "bytes" "crypto/elliptic" "testing" "github.com/ethereum/go-ethereum/crypto" ) // Tests whether a message can be wrapped without any identity or encryption. func TestMessageSimpleWrap(t *testing.T) { payload := []byte("hello world") msg := NewMessage(payload) if _, err := msg.Wrap(DefaultPow, Options{}); err != nil { t.Fatalf("failed to wrap message: %v", err) } if msg.Flags&128 != 0 { t.Fatalf("signature flag mismatch: have %d, want %d", (msg.Flags&128)>>7, 0) } if len(msg.Signature) != 0 { t.Fatalf("signature found for simple wrapping: 0x%x", msg.Signature) } if bytes.Compare(msg.Payload, payload) != 0 { t.Fatalf("payload mismatch after wrapping: have 0x%x, want 0x%x", msg.Payload, payload) } } // Tests whether a message can be signed, and wrapped in plain-text. func TestMessageCleartextSignRecover(t *testing.T) { key, err := crypto.GenerateKey() if err != nil { t.Fatalf("failed to create crypto key: %v", err) } payload := []byte("hello world") msg := NewMessage(payload) if _, err := msg.Wrap(DefaultPow, Options{ From: key, }); err != nil { t.Fatalf("failed to sign message: %v", err) } if msg.Flags&128 != 128 { t.Fatalf("signature flag mismatch: have %d, want %d", (msg.Flags&128)>>7, 1) } if bytes.Compare(msg.Payload, payload) != 0 { t.Fatalf("payload mismatch after signing: have 0x%x, want 0x%x", msg.Payload, payload) } pubKey := msg.Recover() if pubKey == nil { t.Fatalf("failed to recover public key") } p1 := elliptic.Marshal(crypto.S256(), key.PublicKey.X, key.PublicKey.Y) p2 := elliptic.Marshal(crypto.S256(), pubKey.X, pubKey.Y) if !bytes.Equal(p1, p2) { t.Fatalf("public key mismatch: have 0x%x, want 0x%x", p2, p1) } } // Tests whether a message can be encrypted and decrypted using an anonymous // sender (i.e. no signature). func TestMessageAnonymousEncryptDecrypt(t *testing.T) { key, err := crypto.GenerateKey() if err != nil { t.Fatalf("failed to create recipient crypto key: %v", err) } payload := []byte("hello world") msg := NewMessage(payload) envelope, err := msg.Wrap(DefaultPow, Options{ To: &key.PublicKey, }) if err != nil { t.Fatalf("failed to encrypt message: %v", err) } if msg.Flags&128 != 0 { t.Fatalf("signature flag mismatch: have %d, want %d", (msg.Flags&128)>>7, 0) } if len(msg.Signature) != 0 { t.Fatalf("signature found for anonymous message: 0x%x", msg.Signature) } out, err := envelope.Open(key) if err != nil { t.Fatalf("failed to open encrypted message: %v", err) } if !bytes.Equal(out.Payload, payload) { t.Error("payload mismatch: have 0x%x, want 0x%x", out.Payload, payload) } } // Tests whether a message can be properly signed and encrypted. func TestMessageFullCrypto(t *testing.T) { fromKey, err := crypto.GenerateKey() if err != nil { t.Fatalf("failed to create sender crypto key: %v", err) } toKey, err := crypto.GenerateKey() if err != nil { t.Fatalf("failed to create recipient crypto key: %v", err) } payload := []byte("hello world") msg := NewMessage(payload) envelope, err := msg.Wrap(DefaultPow, Options{ From: fromKey, To: &toKey.PublicKey, }) if err != nil { t.Fatalf("failed to encrypt message: %v", err) } if msg.Flags&128 != 128 { t.Fatalf("signature flag mismatch: have %d, want %d", (msg.Flags&128)>>7, 1) } if len(msg.Signature) == 0 { t.Fatalf("no signature found for signed message") } out, err := envelope.Open(toKey) if err != nil { t.Fatalf("failed to open encrypted message: %v", err) } if !bytes.Equal(out.Payload, payload) { t.Error("payload mismatch: have 0x%x, want 0x%x", out.Payload, payload) } pubKey := out.Recover() if pubKey == nil { t.Fatalf("failed to recover public key") } p1 := elliptic.Marshal(crypto.S256(), fromKey.PublicKey.X, fromKey.PublicKey.Y) p2 := elliptic.Marshal(crypto.S256(), pubKey.X, pubKey.Y) if !bytes.Equal(p1, p2) { t.Fatalf("public key mismatch: have 0x%x, want 0x%x", p2, p1) } }