[TriLUG] OT: cryptography challenge

[Owen Berry]

Yes, that's probably why it looks familiar. Thanks - it's a start.

On Tue, Sep 27, 2005 at 02:17:09PM -0400, Joseph Tate wrote:
> The data has been base64 encoded, but the resultant binary data I
> don't know how to decipher.
> 
> On 9/27/05, Owen Berry <oberry at trilug.org> wrote:
> > Given the following 4 encrypted/obfuscated strings, have a wild guess
> > what the encryption algorithm/method is.
> >
> > x86IMZ+WprrGD5I2Tjdm6w==
> > 86oVwKg2TgWoAxaeOTe98A==
> > 4LxtpStocPwNFUvuJBhgEw==
> > R5nGoWiwxkJafQLgcey4GA==
> >
> > The first 8 digits of the current time in seconds since 1970
> > (date +"%s") is part of the encryption/obfuscation key.
> >
> > The above strings are passed as part of an HTTP get and therefore may
> > have been encoded in some manner after encryption/obfuscation. Any
> > guesses on what this is if you don't have a guess on the encryption
> > scheme?
> >
> > The format looks very familiar to me, but I can't remember where I've
> > seen it before.
> >
> > Note that this is not for anything illegal.
> >
> > Owen