security/keymint/aidl/android/hardware/security/keymint/PaddingMode.aidl

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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 android.hardware.security.keymint;

/**
 * Padding modes that may be applied to plaintext for encryption operations.  This list includes
 * padding modes for both symmetric and asymmetric algorithms.  Note that implementations should not
 * provide all possible combinations of algorithm and padding, only the
 * cryptographically-appropriate pairs.
 * @hide
 */
@VintfStability
@Backing(type="int")
enum PaddingMode {
    NONE = 1, /* deprecated */
    RSA_OAEP = 2,
    RSA_PSS = 3,
    RSA_PKCS1_1_5_ENCRYPT = 4,
    RSA_PKCS1_1_5_SIGN = 5,
    PKCS7 = 64,
}