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Security
Sorry about spamming the board with questions! But here another question about PBE encryption
Rob Lee
Greenhorn
Posts: 12
posted 10 years ago
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Hello all,
public class passphrase { static String algorithm = "AES"; public static String ss = "the queen diamond jubilee"; static char[] S=ss.toCharArray(); static String secretData = "Very Secret Data!!"; private static SealedObject myEncryptedMessage; static byte[] salt = "a9v5n38s".getBytes(); public passphrase() throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, UnsupportedEncodingException, IllegalBlockSizeException, BadPaddingException, IOException, ClassNotFoundException, DecoderException{ encrypt(secretData); decrypt(encrypt(secretData)); } public static byte[] gensalt() throws DecoderException{ byte[] x=Hex.decodeHex("ab987e8999ee".toCharArray()); return x; } public static byte[] convert(String h) { char[] buffer = ss.toCharArray(); byte[] b = new byte[buffer.length]; for (int i = 0; i < b.length; i++) { b[i] = (byte) buffer[i]; } return b; } public static String encrypt (String lp) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, UnsupportedEncodingException, IllegalBlockSizeException, BadPaddingException, IOException, DecoderException{ PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 10); PBEKeySpec pbeKeySpec = new PBEKeySpec(S); SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1"); SecretKey key = factory.generateSecret(pbeKeySpec); Cipher c = Cipher.getInstance("PBEWithMD5AndDES"); c.init(Cipher.ENCRYPT_MODE,key,pbeParamSpec); byte[] input = secretData.getBytes("UTF-8"); byte[] encrypted = c.doFinal(input); String encryptedString = new String(Base64.encodeBase64(encrypted)); return encryptedString; } public static String decrypt (String encryptedString) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, IOException, ClassNotFoundException, UnsupportedEncodingException, DecoderException{ PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 10); PBEKeySpec pbeKeySpec = new PBEKeySpec(S); SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1"); SecretKey key = factory.generateSecret(pbeKeySpec); Cipher c = Cipher.getInstance("PBEWithMD5AndDES"); c.init(Cipher.ENCRYPT_MODE,key,pbeParamSpec); byte[] encryptedText = Base64.decodeBase64(encrypt(secretData)); byte[] plainText = c.doFinal(encryptedText); String decryptedText= new String(plainText); System.out.println(decryptedText); return decryptedText; } public static void main(String args[]) throws Exception { passphrase p= new passphrase(); } }
I get this frustrating output(Exception in
thread
"main" java.security.spec.InvalidKeySpecException: Salt not found)
Why is That?
Thank you all
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