Sign & Encrypt tests working okay

Fortune for rsh's current commit: Half blessing − 半吉

src/message.rs

@@ -449,13 +449,13 @@ mod tests
 	struct Dec(rsa::RsaPrivateKey);
 	struct Enc(rsa::RsaPublicKey);
 
+	
 	impl MessageSender for Enc
 	{
 	    const CAP_ENCRYPT: bool = true;
 
 	    fn encrypt_key(&self, key: &aes::AesKey) -> Option<[u8; RSA_BLOCK_SIZE]> {
 		let mut output = [0u8; RSA_BLOCK_SIZE];
-		use rsa::HasPublicComponents;
 		let w = rsa::encrypt_slice_sync(key, &self.0, &mut &mut output[..]).expect("Failed to encrypt session key");
 		assert_eq!(w, output.len());
 		
@@ -474,11 +474,58 @@ mod tests
 		Some(Ok(output))
 	    }
 	}
+
 	let enc = Enc(rsa_priv.get_public_parts());
 	println!("Encrypting pub-key: {:?}", enc.0);
 	println!("Decrypting priv-key: {:?}", rsa_priv);
 	message_serial_generic(enc, Dec(rsa_priv));
     }
+    #[test]
+    fn message_serial_encrypt_sign()
+    {
+	let rsa_priv = rsa::RsaPrivateKey::generate().unwrap();
+	let rsa_priv2 = rsa::RsaPrivateKey::generate().unwrap();
+	
+	struct Dec(rsa::RsaPrivateKey, rsa::RsaPublicKey);
+	struct Enc(rsa::RsaPublicKey, rsa::RsaPrivateKey);
+	
+	impl MessageSender for Enc
+	{
+	    const CAP_ENCRYPT: bool = true;
+	    const CAP_SIGN: bool = true;
+	    
+	    fn sign_data(&self, data: &[u8]) -> Option<rsa::Signature> {
+		Some(rsa::sign_slice(data, &self.1).expect("Failed to sign"))
+	    }
+	    fn encrypt_key(&self, key: &aes::AesKey) -> Option<[u8; RSA_BLOCK_SIZE]> {
+		let mut output = [0u8; RSA_BLOCK_SIZE];
+		let w = rsa::encrypt_slice_sync(key, &self.0, &mut &mut output[..]).expect("Failed to encrypt session key");
+		assert_eq!(w, output.len());
+		
+		Some(output)
+	    }
+	}
+	impl MessageReceiver for Dec
+	{
+	    fn verify_data(&self, data: &[u8], sig: &rsa::Signature) -> Option<eyre::Result<bool>> {
+		Some(sig.verify_slice(data, &self.1).map_err(Into::into))
+	    }
+	    fn decrypt_key(&self, enc_key: &[u8; RSA_BLOCK_SIZE]) -> Option<eyre::Result<aes::AesKey>> {
+		let mut output = aes::AesKey::empty();
+		match rsa::decrypt_slice_sync(enc_key, &self.0, &mut output.as_mut()) {
+		    Ok(sz) => assert_eq!(sz,
+					 output.as_ref().len()),
+		    Err(err) => return Some(Err(err.into())),
+		}
+		Some(Ok(output))
+	    }
+	}
+	
+	let enc = Enc(rsa_priv.get_public_parts(), rsa_priv2.clone());
+	println!("Encrypting pub-key: {:?}", enc.0);
+	println!("Decrypting priv-key: {:?}", rsa_priv);
+	message_serial_generic(enc, Dec(rsa_priv, rsa_priv2.get_public_parts()));
+    }
 
     #[test]
     fn rsa_bullshit()