CipherSymmetricKeyThreadpublic class CipherSymmetricKeyThread extends CipherThread
| Constructors Summary |
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CipherSymmetricKeyThread(String name, int[] keys, String[] modes, String[] paddings)
super(name, keys, modes, paddings);
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| Methods Summary |
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| public void | crypt()
byte[] output = new byte[128];
byte[] decrypted = new byte[128];
byte[] input = getData().getBytes();
SecureRandom sr = new SecureRandom();
byte[] iv = null;//new byte[16];
int outputSize = 0;
KeyGenerator kg = KeyGenerator.getInstance(getAlgName());
kg.init(getKeyLength(), new SecureRandom());
Key key = kg.generateKey();
Cipher cip = Cipher.getInstance(getAlgName() + "/" + getMode() + "/" +
getPadding());
if (getAlgName() != "AES") {
iv = new byte[8];
} else {
iv = new byte[16];
}
sr.nextBytes(iv);
IvParameterSpec ivspec = new IvParameterSpec(iv);
if (getMode() != "ECB") {
cip.init(Cipher.ENCRYPT_MODE, key, ivspec);
cip.doFinal(input, 0, input.length, output);
outputSize = cip.getOutputSize(input.length);
iv = cip.getIV();
ivspec = new IvParameterSpec(iv);
cip.init(Cipher.DECRYPT_MODE, key, ivspec);
cip.doFinal(output, 0, outputSize, decrypted);
} else {
cip.init(Cipher.ENCRYPT_MODE, key);
cip.doFinal(input, 0, input.length, output);
outputSize = cip.getOutputSize(input.length);
cip.init(Cipher.DECRYPT_MODE, key);
cip.doFinal(output, 0, outputSize, decrypted);
}
checkEncodedData(getData().getBytes(), decrypted);
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