Luigi Auriemma

hello luigi,

i want to encrypt a string, i already used rsa for stringbuffer encryption, but now i need a method which creates no '\x00' in the output buffer, so that i can terminate the encrypted result with a '\x00'. Do you know any method to do this.

thx in advance

it's very simple, you need only to "encode" your sequence of bytes with an algorithm which uses a particular charset.
the 2 most simple and diffused encoding are:
- hexadecimal: if you have "\x01\x00\x34" it will become "010034"
- base64: if you have "\x01\x00\x34" it will become "AQA0"

You could use yEnc encoding; it's used for sharing binaries on usenet. It escapes \x00 and has a lot less overhead then base64...

http://www.yenc.org

I have read about yenc just some days ago when I implemented it in my QuickBMS tool.
seems that it's a loved/hated algorithm, indeed it's often not suggested (as far as I have read).
technically instead I can only say that it's really a joke to implement because it's very very simple :)

Yup, I recently implemented it as well because I was creating a .NZB downloader, it's quite easy to do.

i wrote a "leecher" a little awhile ago and implemented yenc as well, works nicely