Missing bits in encrypted text

[ta0001at]

Hi,

I am using the RSA encryptor from the cryptography library. I am using a 1024 bits public key for encryption.


TBuf8<16> aesKeys;
aesKeys.Copy(_L8("1234567890123456"));
TBuf8<128> outputs;
for(TInt j = 0; j < 600; j++)
{

CRSAPKCS1v15Encryptor* iRSAEncryptors = CRSAPKCS1v15Encryptor::NewLC(*iPublicKey);
iRSAEncryptors->EncryptL(aesKeys, outputs);
if(outputs.Length()!=128) //128 bytes = 1024 bits
{
......
}
}

I realise that on several occasions, the length of the encrypted text is not 1024 bits but 1020 bits! I have tried using TBuf and HBufC to store the encrypted text but the bug still occurs.

Please advise. Thanks.

[wizard_hu_]

1020 bits would mean that your output ends with a half byte... What do you get exactly?

[ta0001at]

Sorry made a mistake... i got 1016 bits..which is equivalent to 127 bytes...

[ta0001at]

Has anyone out here been using the cryptography libraries? I just discovered another bug with the RInteger

RInteger iRandom = RInteger::NewRandomL(128); //generate 128 bits (16 bytes)

The operation above sometimes only generate 15 bytes! Has anyone experienced it before?