/**
* @param s
* @return
* @throws GeneralSecurityException
* @throws UnsupportedEncodingException
*/
public static String decrypt(final String s)
throws GeneralSecurityException, UnsupportedEncodingException {
String decrypted = null;
try {
if (s != null) {
final SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
final SecretKey secretKey =
secretKeyFactory.generateSecret(new PBEKeySpec(secret.toCharArray()));
final Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
cipher.init(Cipher.DECRYPT_MODE, secretKey, new PBEParameterSpec(SALT, 20));
final byte[] stringBytes = s.getBytes("UTF-8");
final byte[] decodedBytes = Base64.decode(stringBytes, Base64.DEFAULT);
final byte[] decryptedBytes = cipher.doFinal(decodedBytes);
decrypted = new String(decryptedBytes, "UTF-8");
}
} catch (GeneralSecurityException x) {
throw x;
} catch (UnsupportedEncodingException x) {
throw x;
} catch (Exception x) {
DBG.m(x);
}
return decrypted;
}
// encrypts string
public String encrypt(String toEncrypt) {
try {
// encrypt
byte[] bytes = toEncrypt.getBytes("ASCII");
byte[] encoded = encryptionCipher.doFinal(bytes);
return Base64.encode(encoded);
} catch (Exception e) {
System.out.println("Encryption Error: " + e);
}
return null;
}
// decrypts string
public String decrypt(String toDecrypt) {
try {
// see the above comment for rant, replacing Encoder with Decoder... kthxbye
// note: "above comment" no longer exists
byte[] decoded = Base64.decode(toDecrypt);
// decrypt
byte[] bytes = decryptionCipher.doFinal(decoded);
return new String(bytes, "ASCII");
} catch (Exception e) {
System.out.println("Decryption Error: " + e);
e.printStackTrace();
}
return null;
}
