Hiiiiii leonard,
Will you please give me an example of those
RFC algorithm so that i can understand them properly. I have written a
code following all the steps of those algorithms but the output is
same as the input of those algorithms. So i want to check it out that
am i on the right way or not.
Thanks
SamDev
On Mon, Aug 22, 2011 at 8:54 PM, Leonard Rosenthol <[email protected]> wrote:
> I would recommend reading those two IETF RFCs - they have all the details.
>
>
> On 8/22/11 2:17 AM, "sam_dev" <[email protected]> wrote:
>
>>Hiii ,
>> I need your help regarding pdf password
>>decryption. I have done the decryption of 128 bit RC4 and 128 bit AES
>>passowrd security but now I have to decrypt the 256 bit password security.
>>As according to the ISO 32000:1 document, Algorithm 3.2a Computing an
>>encryption key, I am not able to understand its first step:
>>
>>
>>1. The password string is generated from Unicode input by processing the
>>input string with the SASLprep
>>(IETF RFC 4013) profile of stringprep (IETF RFC 3454), and then converting
>>to a UTF-8 representation.
>>
>>
>>In this i am not able to understand anything about SASLprep profile of
>>stringprep. If anyone can please explain me something about it. I will be
>>really grateful to him/her.
>> Thanks
>>DevSam
>>
>>--
>>View this message in context:
>>http://itext-general.2136553.n4.nabble.com/256-bit-AES-algorithm-pdf-passw
>>ord-decryption-tp3759415p3759415.html
>>Sent from the iText - General mailing list archive at Nabble.com.
>>
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