import org.spongycastle.crypto.paddings.PKCS7Padding; //导入依赖的package包/类
protected PaddedBufferedBlockCipher createCipher(String passphrase, boolean isEncrypting) throws CryptoException{
	CustomRandom cRandom = new CustomRandom(utf8Bytes(passphrase));
	byte[] salt = new byte[8];
	cRandom.nextBytes(salt);
	byte[] password = new byte[32];
	cRandom.nextBytes(password);
	int iterationCount = 1000;
	int keyLength = 256;		
	int blockSize = 128;
	
	PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator(new SHA256Digest());
	generator.init(password, salt, iterationCount);

	CipherParameters key = generator
				.generateDerivedParameters(keyLength, blockSize);
	
	CBCBlockCipher cbcCipher = new CBCBlockCipher(new AESEngine());
	PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(
			cbcCipher, new PKCS7Padding());
	cipher.init(isEncrypting, key);
	return cipher;
}
 

import org.spongycastle.crypto.paddings.PKCS7Padding; //导入依赖的package包/类
static PaddedBufferedBlockCipher createAes128CtrPkcs7PaddingCipher(
        boolean encrypting,
        byte[] iv,
        byte[] key) {
    AESEngine aes = new AESEngine();
    SICBlockCipher aesCtr = new SICBlockCipher(aes);
    PaddedBufferedBlockCipher aesCtrPkcs7 =
            new PaddedBufferedBlockCipher(aesCtr, new PKCS7Padding());
    aesCtrPkcs7.init(encrypting, new ParametersWithIV(new KeyParameter(key), iv));

    return aesCtrPkcs7;
}
 

import org.spongycastle.crypto.paddings.PKCS7Padding; //导入依赖的package包/类
public static byte[] encrypt(byte[] key, byte[] input) throws DataLengthException, InvalidCipherTextException {
	pbbc = new PaddedBufferedBlockCipher(AESCipher, new PKCS7Padding());
	AESSpongeyCastle.key = new KeyParameter(key);
    return processing(input, true);
}
 

import org.spongycastle.crypto.paddings.PKCS7Padding; //导入依赖的package包/类
public static byte[] decrypt(byte[] key, byte[] input) throws DataLengthException, InvalidCipherTextException {
	pbbc = new PaddedBufferedBlockCipher(AESCipher, new PKCS7Padding());
	AESSpongeyCastle.key = new KeyParameter(key);
    return processing(input, false);
}
 

import org.spongycastle.crypto.paddings.PKCS7Padding; //导入依赖的package包/类
public static byte[] encrypt(byte[] key, byte[] input) throws DataLengthException, InvalidCipherTextException {
	pbbc = new PaddedBufferedBlockCipher(ThreefishCipher, new PKCS7Padding());
	ThreefishSpongeyCastle.key = new KeyParameter(key);
    return processing(input, true);
}
 

import org.spongycastle.crypto.paddings.PKCS7Padding; //导入依赖的package包/类
public static byte[] decrypt(byte[] key, byte[] input) throws DataLengthException, InvalidCipherTextException {
	pbbc = new PaddedBufferedBlockCipher(ThreefishCipher, new PKCS7Padding());
	ThreefishSpongeyCastle.key = new KeyParameter(key);
    return processing(input, false);
}