NewLC - rijndael+Encryption - Comments

Re: rijndael+Encryption

mesweetie — Thu, 29 Sep 2005 11:07:25 +0200

Thanks chisti
I am not able to encrypt large data it is encrypting till 32 character rest it gives the same as that of plaintext contain.
How u got it
I tried but vain.
Can u hep me
TIA

Re: rijndael+Encryption

chishti_hameed — Mon, 12 Sep 2005 11:59:27 +0200

Quote from: mesweetie

hey have u resolved ur problem
me too wants to solve it for more than 500 characters.
Can u help me
If u got sol pls do share up ur experience here.
Hoping for reply
Thanks

i did this way: didnt encrypt 500 char but .......

   const TInt aBlockSize = 128;
   const TInt aBufSize = KBufferSize;

   //input data
   // Secret message (which fits exactly in one block)
   TBuf8<aBufSize> secret; //will contain encrypted data
   secret.Copy(aText);
   secret.TrimAll();

   TInt number = secret.Length();

   // Init stuff
   TUint8 block[aBlockSize];
   TPtr8 blockPtr(block, aBlockSize);
   aes::keyInstance keyInst;
   aes::cipherInstance cipherInst;

   //
   // Generate key instance for encryption.
   // The secret key material is an hex string
   // with a length of keyLen/4 bytes.
   TInt keyLen = aBlockSize;
   TText8* secretKeyMaterial =
          (TText8*) "E5E6E7E9EA292A2B2D256789012345E5";

   keyInst.blockLen = BITSPERBLOCK;
   aes::makeKey(&keyInst, DIR_ENCRYPT,
             keyLen, secretKeyMaterial);

   //
   // Init cipher instance
   cipherInst.blockLen = BITSPERBLOCK;
   aes::cipherInit(&cipherInst, MODE_ECB, NULL);

   //
   // Encrypt block
   // Fill block with our secret message
   blockPtr.Append(secret.Ptr(), number);
   aes::blockEncrypt(&cipherInst, &keyInst,
                 block, BITSPERBLOCK, block);

   secret.Zero();
   secret.Copy(blockPtr); //copy blockPtr to secret (buffer)
   secret.TrimAll();
   blockPtr.Zero();

Re: rijndael+Encryption

mesweetie — Mon, 12 Sep 2005 11:43:24 +0200

hey have u resolved ur problem
I have solved for small text but for large text its panicking or sometime truncating.
me too wants to solve it for more than 500 characters.
Can u help me
If u got sol pls do share up ur experience here.
Hoping for reply
Thanks

Re: rijndael+Encryption

eserkansozer — Mon, 05 Sep 2005 12:09:20 +0200

Hi,

I think this produces Unicode strings...
Is there a way of using this algorithm to produce encrypted strings as ASCII characters?
Or dou you know another algorithm which does that?

thanks

Serkan

rijndael+Encryption

Sat, 06 Aug 2005 13:39:32 +0200