1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.apksig;
18 
19 import java.security.InvalidAlgorithmParameterException;
20 import java.security.InvalidKeyException;
21 import java.security.NoSuchAlgorithmException;
22 import java.security.SignatureException;
23 
24 /** A basic abstraction for cryptographic signing. */
25 public interface SignerEngine {
26     /**
27      * Cryptographically sign the input.
28      *
29      * @param data a blob of bytes to sign.
30      * @return the signed bytes.
31      */
sign(byte[] data)32     byte[] sign(byte[] data)
33             throws InvalidKeyException, NoSuchAlgorithmException,
34                     InvalidAlgorithmParameterException, SignatureException;
35 }
36