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to you 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.
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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.commons.crypto.cipher;

import java.nio.ByteBuffer;

JNI interface of OpenSsl implementation. The native method in this class is defined in OpenSslNative.h (generated by javah). /**
 * JNI interface of {@link OpenSsl} implementation. The native method in this
 * class is defined in OpenSslNative.h (generated by javah).
 */
class OpenSslNative {

  
The private constructor of OpenSslNative. /**
   * The private constructor of {@link OpenSslNative}.
   */
    private OpenSslNative() {
    }

    
Declares a native method to initialize JNI field and method IDs.
/**
     * Declares a native method to initialize JNI field and method IDs.
     */
    public native static void initIDs();

    
Declares a native method to initialize the cipher context.
Params:
algorithm – The algorithm name of cipher
padding – The padding name of cipher
Returns:
the context address of cipher/**
     * Declares a native method to initialize the cipher context.
     *
     * @param algorithm The algorithm name of cipher
     * @param padding The padding name of cipher
     * @return the context address of cipher
     */
    public native static long initContext(int algorithm, int padding);

    
Declares a native method to initialize the cipher context.
Params:
context – The cipher context address
mode – ENCRYPT_MODE or DECRYPT_MODE
alg – Algorithm Mode of OpenSsl
padding – the padding mode of OpenSsl cipher
key – crypto key
iv – crypto iv
Returns:
the context address of cipher/**
     * Declares a native method to initialize the cipher context.
     *
     * @param context The cipher context address
     * @param mode ENCRYPT_MODE or DECRYPT_MODE
     * @param alg Algorithm Mode of OpenSsl
     * @param padding the padding mode of OpenSsl cipher
     * @param key crypto key
     * @param iv crypto iv
     * @return the context address of cipher
     */
    public native static long init(long context, int mode, int alg,
            int padding, byte[] key, byte[] iv);

    
Continues a multiple-part encryption/decryption operation. The data is
encrypted or decrypted, depending on how this cipher was initialized.
Params:
context – The cipher context address
input – The input byte buffer
inputOffset – The offset in input where the input starts
inputLength – The input length
output – The byte buffer for the result
outputOffset – The offset in output where the result is stored
maxOutputLength – The maximum length for output
Returns:
The number of bytes stored in output/**
     * Continues a multiple-part encryption/decryption operation. The data is
     * encrypted or decrypted, depending on how this cipher was initialized.
     *
     * @param context The cipher context address
     * @param input The input byte buffer
     * @param inputOffset The offset in input where the input starts
     * @param inputLength The input length
     * @param output The byte buffer for the result
     * @param outputOffset The offset in output where the result is stored
     * @param maxOutputLength The maximum length for output
     * @return The number of bytes stored in output
     */
    public native static int update(long context, ByteBuffer input,
            int inputOffset, int inputLength, ByteBuffer output,
            int outputOffset, int maxOutputLength);

    
Continues a multiple-part encryption/decryption operation. The data is
encrypted or decrypted, depending on how this cipher was initialized.
Params:
context – The cipher context address
input – The input byte array
inputOffset – The offset in input where the input starts
inputLength – The input length
output – The byte array for the result
outputOffset – The offset in output where the result is stored
maxOutputLength – The maximum length for output
Returns:
The number of bytes stored in output/**
     * Continues a multiple-part encryption/decryption operation. The data is
     * encrypted or decrypted, depending on how this cipher was initialized.
     *
     * @param context The cipher context address
     * @param input The input byte array
     * @param inputOffset The offset in input where the input starts
     * @param inputLength The input length
     * @param output The byte array for the result
     * @param outputOffset The offset in output where the result is stored
     * @param maxOutputLength The maximum length for output
     * @return The number of bytes stored in output
     */
    public native static int updateByteArray(long context, byte[] input,
            int inputOffset, int inputLength, byte[] output, int outputOffset,
            int maxOutputLength);

    
Finishes a multiple-part operation. The data is encrypted or decrypted,
depending on how this cipher was initialized.
Params:
context – The cipher context address
output – The byte buffer for the result
offset – The offset in output where the result is stored
maxOutputLength – The maximum length for output
Returns:
The number of bytes stored in output/**
     * Finishes a multiple-part operation. The data is encrypted or decrypted,
     * depending on how this cipher was initialized.
     *
     * @param context The cipher context address
     * @param output The byte buffer for the result
     * @param offset The offset in output where the result is stored
     * @param maxOutputLength The maximum length for output
     * @return The number of bytes stored in output
     */
    public native static int doFinal(long context, ByteBuffer output,
            int offset, int maxOutputLength);

    
Finishes a multiple-part operation. The data is encrypted or decrypted,
depending on how this cipher was initialized.
Params:
context – The cipher context address
output – The byte array for the result
offset – The offset in output where the result is stored
maxOutputLength – The maximum length for output
Returns:
The number of bytes stored in output/**
     * Finishes a multiple-part operation. The data is encrypted or decrypted,
     * depending on how this cipher was initialized.
     *
     * @param context The cipher context address
     * @param output The byte array for the result
     * @param offset The offset in output where the result is stored
     * @param maxOutputLength The maximum length for output
     * @return The number of bytes stored in output
     */
    public native static int doFinalByteArray(long context, byte[] output,
            int offset, int maxOutputLength);

    
Cleans the context at native.
Params:
context – The cipher context address/**
     * Cleans the context at native.
     *
     * @param context The cipher context address
     */
    public native static void clean(long context);
}