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  1. import java.security.MessageDigest;
  2. import java.util.Arrays;
  3. import javax.crypto.Cipher;
  4. import javax.crypto.SecretKey;
  5. import javax.crypto.spec.IvParameterSpec;
  6. import javax.crypto.spec.SecretKeySpec;
  7.  
  8.  class TripleDESTest {
  9.  
  10.     public static void main(String[] args) throws Exception {
  11.  
  12.     	Class1 key = new Class1();
  13. 		String text = System.out.println(key);
  14.  
  15.  
  16.  
  17.  
  18.     	byte[] codedtext = new TripleDESTest().encrypt(text);
  19.     	String decodedtext = new TripleDESTest().decrypt(codedtext);
  20.  
  21.     	System.out.println(codedtext); // this is a byte array, you'll just see a reference to an array
  22.     	System.out.println(decodedtext); // This correctly shows "kyle boon"
  23.     }
  24.  
  25.     public byte[] encrypt(String message) throws Exception {
  26.     	final MessageDigest md = MessageDigest.getInstance("md5");
  27.     	final byte[] digestOfPassword = md.digest("HG58YZ3CR9"
  28.     			.getBytes("utf-8"));
  29.     	final byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
  30.     	for (int j = 0, k = 16; j < 8;) {
  31.     		keyBytes[k++] = keyBytes[j++];
  32.     	}
  33.  
  34.     	final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
  35.     	final IvParameterSpec iv = new IvParameterSpec(new byte[8]);
  36.     	final Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
  37.     	cipher.init(Cipher.ENCRYPT_MODE, key, iv);
  38.  
  39.     	final byte[] plainTextBytes = message.getBytes("utf-8");
  40.     	final byte[] cipherText = cipher.doFinal(plainTextBytes);
  41.     	// final String encodedCipherText = new sun.misc.BASE64Encoder()
  42.     	// .encode(cipherText);
  43.  
  44.     	return cipherText;
  45.     }
  46.  
  47.     public String decrypt(byte[] message) throws Exception {
  48.     	final MessageDigest md = MessageDigest.getInstance("md5");
  49.     	final byte[] digestOfPassword = md.digest("HG58YZ3CR9"
  50.     			.getBytes("utf-8"));
  51.     	final byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
  52.     	for (int j = 0, k = 16; j < 8;) {
  53.     		keyBytes[k++] = keyBytes[j++];
  54.     	}
  55.  
  56.     	final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
  57.     	final IvParameterSpec iv = new IvParameterSpec(new byte[8]);
  58.     	final Cipher decipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
  59.     	decipher.init(Cipher.DECRYPT_MODE, key, iv);
  60.  
  61.     	// final byte[] encData = new
  62.     	// sun.misc.BASE64Decoder().decodeBuffer(message);
  63.     	final byte[] plainText = decipher.doFinal(message);
  64.  
  65.     	return new String(plainText, "UTF-8");
  66.     }
  67.   }
  68. class Class1
  69.   {
  70.     private final char[] lst = { 'B', 'A', 'R', 'C', 'O', '-', 'S', 'T', 'R', 'I', 'N', 'G', 'E', 'N', 'C', 'R', 'Y', 'P', 'T', 'I', 'O', 'N', '-', 'U', 'L' };
  71.  
  72.     Class1() {}
  73.  
  74.     public String toString()
  75.     {
  76.       return new String(this.lst);
  77.     }
  78.   }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
Main.java:13: error: incompatible types: void cannot be converted to String
		String text = System.out.println(key);
		                                ^
1 error
stdout
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Standard output is empty
https://ideone.com/y6WAgp
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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