Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>From an old code:</p> <pre><code> public void testSymCypher(SecretKey k, String str) throws BadPaddingException, IllegalBlockSizeException, InvalidAlgorithmParameterException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException { Cipher cip = Cipher.getInstance("DESede/CBC/PKCS5Padding"); cip.init(Cipher.ENCRYPT_MODE,k); byte[] ciphered = cip.doFinal(str.getBytes()); byte iv[] = cip.getIV(); // printing the ciphered string printHexadecimal(ciphered); IvParameterSpec dps = new IvParameterSpec(iv); cip.init(Cipher.DECRYPT_MODE,k,dps); byte[] deciphered = cip.doFinal(ciphered); // printing the deciphered string printHexadecimal(deciphered); } </code></pre> <p>Notice than other usage of DESede are available in Java JDK 6:</p> <ul> <li>DESede/CBC/NoPadding (168)</li> <li>DESede/CBC/PKCS5Padding (168)</li> </ul> <p>There is also ECB mode available (but be carreful to not use it twice !!), you don't need to use iv part in this case:</p> <ul> <li>DESede/ECB/NoPadding (168)</li> <li>DESede/ECB/PKCS5Padding (168) </li> </ul> <p>To generate key for DESede:</p> <pre><code> KeyGenerator generatorDes = KeyGenerator.getInstance("DESede"); SecretKey skaes = generatorDes.generateKey(); </code></pre> <p>Finally I recommand reading <a href="http://java.sun.com/javase/6/docs/technotes/guides/security/crypto/CryptoSpec.html" rel="nofollow noreferrer" title="Java ™ Cryptography Architecture (JCA) Reference Guide">this document</a> from SUN if you need to work on Java and Cryptography</p>
    singulars
    1. This table or related slice is empty.
    1. POHow do I encrypt/decrypt a string of text using 3DES in java?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USKartoch
    1. USKartoch
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThis code gives me a java.security.InvalidKeyException: Invalid key length: 8 bytes at com.sun.crypto.provider.DESedeCipher.engineGetKeySize(DashoA13*..)
      singulars
      1. PO
      1. USScArcher2
    2. COI think it's because I made a mistake with KeyGenerator: it is DESede and not DES. If you use your own key, check your key size (it seems related to the kind of 3DES key you use. Because I don't know too much about it, please refer to the wikipedia page of 3DES).
      singulars
      1. PO
      1. USKartoch
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload