Re: Encryption Algorithm Footprint

[Dominik Russenberger <drussenberger () gmx net>]

no, not if it is a modern algorithm without header. you can look if it has 
something like an header, but if not, then you haven't got a chance.
there's no difference between random data and encrypted data (assuming it's a 
strong algorithm)

dominik


> I am auditing one of my critical service system. This system provides our
> users a method of stock exchange. By using ethereal I found the data
> packets was encypted like in SSL. Next I found the private key in my server
> and encypted symmetric key payload in the captured packets. After
> successfully decrypting the 16- bytes symmetric key, I test many encryption
> algorithm to decrypted the captured ciphertext, but all failed. 
> I want to know if encryption algorithm has footprint. Is there any technica
> to find which encryption algorithm it used? 
> Thank you all and Happy Chinese New year!
>
> Haiyan Chen
>
> ***********************
> [security () fooyu com]
> www.fooyu.com
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