Add trudy keys and show failure

rsa-encrypt-sign.go

@@ -27,6 +27,13 @@ func main() {
 	}
 	bobPublicKey := &bobPrivateKey.PublicKey
 
+	trudyPrivateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+	trudyPublicKey := &trudyPrivateKey.PublicKey
+
 	fmt.Println("Alice's Private Key : ", alicePrivateKey)
 	fmt.Println()
 	fmt.Println("Alice's Public key ", alicePublicKey)
@@ -124,4 +131,21 @@ func main() {
 	} else {
 		fmt.Println("Verify Signature successful!")
 	}
+
+	fmt.Printf("OAEP decrypted [%x] to \n[%s]\n", ciphertext2, plainText)
+	fmt.Println()
+
+	err = rsa.VerifyPSS(
+		trudyPublicKey,
+		newhash,
+		hashed,
+		signature,
+		&opts)
+
+	if err != nil {
+		fmt.Println("Signature verification failed!")
+		os.Exit(1)
+	} else {
+		fmt.Println("Verify Signature successful!")
+	}
 }