Method test_aes_cbc

Lib/test/test_socket.py:7135–7173

(self)

    # Ubuntu 15.10 with Kernel 4.2.0-19.
    @support.requires_linux_version(4, 3)
    def test_aes_cbc(self):
        key = bytes.fromhex('06a9214036b8a15b512e03d534120006')
        iv = bytes.fromhex('3dafba429d9eb430b422da802c9fac41')
        msg = b"Single block msg"
        ciphertext = bytes.fromhex('e353779c1079aeb82708942dbe77181a')
        msglen = len(msg)
        with self.create_alg('skcipher', 'cbc(aes)') as algo:
            algo.setsockopt(socket.SOL_ALG, socket.ALG_SET_KEY, key)
            op, _ = algo.accept()
            with op:
                op.sendmsg_afalg(op=socket.ALG_OP_ENCRYPT, iv=iv,
                                 flags=socket.MSG_MORE)
                op.sendall(msg)
                self.assertEqual(op.recv(msglen), ciphertext)

            op, _ = algo.accept()
            with op:
                op.sendmsg_afalg([ciphertext],
                                 op=socket.ALG_OP_DECRYPT, iv=iv)
                self.assertEqual(op.recv(msglen), msg)

            # long message
            multiplier = 1024
            longmsg = [msg] * multiplier
            op, _ = algo.accept()
            with op:
                op.sendmsg_afalg(longmsg,
                                 op=socket.ALG_OP_ENCRYPT, iv=iv)
                enc = op.recv(msglen * multiplier)
            self.assertEqual(len(enc), msglen * multiplier)
            self.assertEqual(enc[:msglen], ciphertext)

            op, _ = algo.accept()
            with op:
                op.sendmsg_afalg([enc],
                                 op=socket.ALG_OP_DECRYPT, iv=iv)
                dec = op.recv(msglen * multiplier)
            self.assertEqual(len(dec), msglen * multiplier)
            self.assertEqual(dec, msg * multiplier)

    @support.requires_linux_version(4, 9)  # see gh-73510
    def test_aead_aes_gcm(self):