Stream Cipher

Stream Cipher

I want to encrypt data use two layer cipher as follow,but it seems not work, why and how, thanks´╝?

encrypt part´╝? Cipher cf1 = Cipher.getInstance(ciphAlg1); cf1.init(Cipher.ENCRYPT_MODE, key1, paramSpec); Cipher cf2 = Cipher.getInstance(ciphAlg2); cf2.init(Cipher.ENCRYPT_MODE, key2, paramSpec2);

FileInputStream fis = new FileInputStream(inputFile); FileOutputStream fos = new FileOutputStream(outputFile); CipherOutputStream cos1 = new CipherOutputStream(fos, cf1); CipherOutputStream cos2 = new CipherOutputStream(cos1, cf2);

decrypt part´╝? Cipher cf1 = Cipher.getInstance(ciphAlg1); cf1.init(Cipher.DECRYPT_MODE, key1, paramSpec); Cipher cf2 = Cipher.getInstance(ciphAlg2); cf2.init(Cipher.DECRYPT_MODE, key2, paramSpec2);

FileInputStream fis = new FileInputStream(inputFile); FileOutputStream fos = new FileOutputStream(outputFile);

CipherOutputStream cos1 = new CipherOutputStream(fos, cf2); CipherOutputStream cos2 = new CipherOutputStream(cos1, cf1);

One layer work well, but the double...

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