(param0) cipher could not be found

Raise code

                                                                             filename=filename)

        # create the cipher object, note that the cipher used for decrypt can
        # be different than the cipher used for encrypt
        if cipher_name in CIPHER_WHITELIST:
            this_cipher = CIPHER_MAPPING[cipher_name]()
        else:
            raise AnsibleError("{0} cipher could not be found".format(cipher_name))

        b_plaintext = None

        if not self.secrets:
            raise AnsibleVaultError('Attempting to decrypt but no vault secrets found')

        # WARNING: Currently, the vault id is not required to match the vault id in the vault blob to