Hi Dear,
i encrypt some of the images but it takes so long for encryption and
decryption.
encryption of images in sdcard are just to void straight copy and a
very simple encryption would be ok for instance.
please check my code below and advise how can i make it fast:
static{
byte[] iv = new byte[]{
(byte)0x8E, 0x12, 0x39, (byte)0x9C,
0x07, 0x72, 0x6F, 0x5A};
AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
try {
SecretKey key =
KeyGenerator.getInstance("DES").generateKey
();
ecipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
dcipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
// CBC requires an initialization vector
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e)
{
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
}
}
///////////////////////////////
i tried RC4 which throws NullException
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