// fail here because the AES-GCM key will be incorrect.
		fmt.Fprintf(os.Stderr, "Error decrypting: %s\n", err)
		return
	}

	fmt.Printf("Plaintext: %s\n", plaintext)
}

func ExampleSignPKCS1v15() {
	message := []byte("message to be signed")

	// Only small messages can be signed directly; thus the hash of a
	// message, rather than the message itself, is signed. This requires