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