encrypt String with DES with hard coded key - Android java.security

Android examples for java.security:DES

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Description

encrypt String with DES with hard coded key

Demo Code


//package com.java2s;
import android.util.Base64;
import android.util.Log;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;

public class Main {
    private static String cryptoPass = "sup3rS3xy";

    public static String encryptIt(String value) {
        try {/*www. j  a  v a2s. co  m*/
            DESKeySpec keySpec = new DESKeySpec(cryptoPass.getBytes("UTF8"));
            SecretKeyFactory keyFactory = SecretKeyFactory
                    .getInstance("DES");
            SecretKey key = keyFactory.generateSecret(keySpec);

            byte[] clearText = value.getBytes("UTF8");
            // Cipher is not thread safe
            Cipher cipher = Cipher.getInstance("DES");
            cipher.init(Cipher.ENCRYPT_MODE, key);

            String encrypedValue = Base64.encodeToString(
                    cipher.doFinal(clearText), Base64.DEFAULT);
            Log.d("Encrypt", "Encrypted: " + value + " -> " + encrypedValue);
            return encrypedValue;

        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (InvalidKeySpecException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        }
        return value;
    }
}

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