Java Utililty Methods DES

List of utility methods to do DES

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Description

The list of methods to do DES are organized into topic(s).

Method

byte[] des3EncodeECB(byte[] key, byte[] data)
des Encode ECB

Key deskey = null;
DESedeKeySpec spec = new DESedeKeySpec(key);
SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
deskey = keyfactory.generateSecret(spec);
Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, deskey);
byte[] bOut = cipher.doFinal(data);
return bOut;
...

byte[] desEncrypt(byte[] data, String encryptKey)
des Encrypt

try {
 SecureRandom sr = new SecureRandom();
 DESKeySpec dks = new DESKeySpec(encryptKey.getBytes("UTF-8"));
 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
 SecretKey key = keyFactory.generateSecret(dks);
 Cipher cipher = Cipher.getInstance("DES");
 cipher.init(Cipher.ENCRYPT_MODE, key, sr);
 return cipher.doFinal(data);
...

byte[] desEncrypt(byte[] input, String password)
des Encrypt

return doDes(Cipher.ENCRYPT_MODE, input, password);

byte[] desEncrypt(String content, String key)
des Encrypt

try {
 SecureRandom random = new SecureRandom();
 DESKeySpec desKey = new DESKeySpec(key.getBytes());
 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
 SecretKey securekey = keyFactory.generateSecret(desKey);
 Cipher cipher = Cipher.getInstance("DES");
 cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
 byte[] result = cipher.doFinal(content.getBytes());
...