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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package subtle
// INDCPACipher provides an interface for symmetric key ciphers that are
// indistinguishable against chosen-plaintext attacks. Said primitives do not
// provide authentication, thus should not be used directly, but only to
// construct safer primitives such as AEAD.
type INDCPACipher interface {
// Encrypt encrypts plaintext. The resulting ciphertext is indistinguishable under
// chosen-plaintext attack. However, it does not have integrity protection.
Encrypt(plaintext []byte) ([]byte, error)
// Decrypt decrypts ciphertext and returns the resulting plaintext.
Decrypt(ciphertext []byte) ([]byte, error)
}
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