cn.hutool.crypto.digest.mac.CBCBlockCipherMacEngine Maven / Gradle / Ivy
package cn.hutool.crypto.digest.mac;
import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.Mac;
import org.bouncycastle.crypto.macs.CBCBlockCipherMac;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.ParametersWithIV;
import java.security.Key;
/**
* {@link CBCBlockCipherMac}实现的MAC算法，使用CBC Block方式
*
* @author looly
* @since 5.8.0
*/
public class CBCBlockCipherMacEngine extends BCMacEngine {
/**
* 构造
*
* @param digest 摘要算法，为{@link Digest} 的接口实现
* @param macSizeInBits mac结果的bits长度，必须为8的倍数
* @param key 密钥
* @param iv 加盐
* @since 5.7.12
*/
public CBCBlockCipherMacEngine(BlockCipher digest, int macSizeInBits, Key key, byte[] iv) {
this(digest, macSizeInBits, key.getEncoded(), iv);
}
/**
* 构造
*
* @param digest 摘要算法，为{@link Digest} 的接口实现
* @param macSizeInBits mac结果的bits长度，必须为8的倍数
* @param key 密钥
* @param iv 加盐
*/
public CBCBlockCipherMacEngine(BlockCipher digest, int macSizeInBits, byte[] key, byte[] iv) {
this(digest, macSizeInBits, new ParametersWithIV(new KeyParameter(key), iv));
}
/**
* 构造
*
* @param cipher 算法，为{@link BlockCipher} 的接口实现
* @param macSizeInBits mac结果的bits长度，必须为8的倍数
* @param key 密钥
*/
public CBCBlockCipherMacEngine(BlockCipher cipher, int macSizeInBits, Key key) {
this(cipher, macSizeInBits, key.getEncoded());
}
/**
* 构造
*
* @param cipher 算法，为{@link BlockCipher} 的接口实现
* @param macSizeInBits mac结果的bits长度，必须为8的倍数
* @param key 密钥
*/
public CBCBlockCipherMacEngine(BlockCipher cipher, int macSizeInBits, byte[] key) {
this(cipher, macSizeInBits, new KeyParameter(key));
}
/**
* 构造
*
* @param cipher 算法，为{@link BlockCipher} 的接口实现
* @param macSizeInBits mac结果的bits长度，必须为8的倍数
* @param params 参数，例如密钥可以用{@link KeyParameter}
*/
public CBCBlockCipherMacEngine(BlockCipher cipher, int macSizeInBits, CipherParameters params) {
this(new CBCBlockCipherMac(cipher, macSizeInBits), params);
}
/**
* 构造
*
* @param mac {@link CBCBlockCipherMac}
* @param params 参数，例如密钥可以用{@link KeyParameter}
*/
public CBCBlockCipherMacEngine(CBCBlockCipherMac mac, CipherParameters params) {
super(mac, params);
}
/**
* 初始化
*
* @param cipher {@link BlockCipher}
* @param params 参数，例如密钥可以用{@link KeyParameter}
* @return this
* @see #init(Mac, CipherParameters)
*/
public CBCBlockCipherMacEngine init(BlockCipher cipher, CipherParameters params) {
return (CBCBlockCipherMacEngine) init(new CBCBlockCipherMac(cipher), params);
}
}