want a disarmed harmless one to play with, I can e-
mail you my decrypted and patched up variant.
Marcos el Ruptor
http://www.enrupt.com/ - Raising the bar.
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files with the same first 16 bytes (roughly 1/256 of
them), the keystream will match. No cryptography to implement, only
XOR. Good luck!
Best regards,
Marcos el Ruptor
http://www.enrupt.com/ - Raising the bar
obfuscation algorithms was to have a US company pay $4bln for it...
Well done!
Marcos el Ruptor
http://www.enrupt.com/ - Raising the bar.
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with such requests. They just
either won't or just won't tell us.
Best regards,
Marcos el Ruptor
http://www.enrupt.com/ - Raising the bar [and disabling Skype
SuperNode].
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vulnerabilities should be enough
of a proof of that.
Best regards,
Marcos el Ruptor
http://www.enrupt.com/ - Raising the bar.
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The 48-bit Philips Hitag2 algorithm has been completely reverse-
engineered a long time ago:
http://cryptolib.com/ciphers/hitag2/
Ruptor
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I didn't realise the current SecurID tokens had been broken. A
quick Google
doesn't show anything, but I'm probably using the wrong terms. Do
you have
references for this that I could have a look at?
http://eprint.iacr.org/2003/162.pdf
This attack may not be as practical as an algebraic
I'd like to start with the really simple stuff; classical
cryptography, systems with clean and obvious breaks.
You can start with RSA SecurID, Texas Instruments DST40, Microchip
Technologies KeeLoq, Philips/NXP Hitag2, WEP RC4, Bluetooth E0, GSM
A5... It's much harder to find a product or
Compared to AES-128, AES-256 is 140% of the rounds to encrypt 200% as much
data. So when implemented in hardware, AES-256 is substantially faster.
Excuse me, AES-256 has the same block size as AES-128, that is 128 bits.
It's in fact slower, not faster, and in hardware it also occupies a
Now, you said compressed files and you might not have meant
pictures, but note that L-Z style compressed files don't really have
much in the way of headers. If the headers were a problem, you'd
expect longer files to bury any deviation in the noise, but it
doesn't. The longer the files I test the
One thing is possible with Skype: any user can easily obtain any other
user's IP address (actually both internal and external IPs). Those users
don't even need to be on his contact list. Of course one would need cracking
tools or a decrypted patched Skype executable with all the 288 integrity
You can use cryptography to protect IP and to prevent cloning of microchips
even if they get reverse-engineered, but the cipher would have to possess
special properties similar to those of VEST ciphers (see
http://www.ecrypt.eu.org/stream/vestp2.html), like support family keying to
make every
unpublished cryptographic algorithms. The specification is secret
and confidential. It uses the SMS4 block cipher, which is secret and
patented. [*]
It's been declassified in January 2006.
The SMS4 cipher specification -
http://www.oscca.gov.cn/UpFile/200621016423197990.pdf
Ruptor
unpublished cryptographic algorithms. The specification is secret
and confidential. It uses the SMS4 block cipher, which is secret and
patented. [*]
Can you briefly explain how you determine the PRF rounds value?
William
Your question belongs in our forums -
http://defectoscopy.com/forum/viewforum.php?f=3 where it's already being
discussed.
Ruptor
[Moderator's note: no, actually, if you're going to mention it here,
you had better be
I skimmed this. The start of the article says that after 3 rounds AES
achieves perfect diffusion?!
1. It's complete diffusion, not perfect diffusion. Perfect diffusion is
a property meaning something completely different.
2. My post incorrectly stated that cryptographers believed that the AES
On Wed, 10 May 2006 10:01:57 -0600, John R. Black wrote
On Thu, May 04, 2006 at 10:30:40AM -0500, Marcos el Ruptor wrote:
http://defectoscopy.com/forum/viewtopic.php?t=3
Expect new attacks soon enough.
I skimmed this. The start of the article says that after 3 rounds
AES
Aloha!
Just out of curiosity I tried to Google around for recent papers on
attacks against AES/Rijndael. I found the usual suspects with XLS
attacks and DJBs timing attack. But what is the current status of
attacks, anything new and exciting?
http://defectoscopy.com/forum/viewtopic.php?t=3
The recently arrested boss of bosses of the Sicilian Mafia, Bernardo
Provenzano, wrote notes using an encryption scheme similar to the one
used by Julius Caesar more than 2,000 years ago, according to a
biography of Italy's most wanted man.
Sicilian mafia also uses mobile phones that
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