Re: Deducing key from encrypted original data
On Tue, Dec 11, 2001 at 01:33:41AM +, Andrew Bolt wrote: ...unless you are from Hollywood - in which case a good encryption scheme is one that can be cracked by having lots of digits flash up on the screen, and gradually have individual digits lock into the correct key. Some wierd variant of working Quantum Computer. -- Share and Enjoy. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Deducing key from encrypted original data
On Tue, Dec 11, 2001 at 01:33:41AM +, Andrew Bolt wrote: ...unless you are from Hollywood - in which case a good encryption scheme is one that can be cracked by having lots of digits flash up on the screen, and gradually have individual digits lock into the correct key. Some wierd variant of working Quantum Computer. -- Share and Enjoy.
Deducing key from encrypted original data
Hi, this is something I've been wondering for some time now: Is it possible (or at least much easier) to extract the encryption key if you both have the encrypted and original data? Dries PS. I know it isn't debian-related, but it's a good question anyway... -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Deducing key from encrypted original data
Hi, this is something I've been wondering for some time now: Is it possible (or at least much easier) to extract the encryption key if you both have the encrypted and original data? Dries PS. I know it isn't debian-related, but it's a good question anyway...
Re: Deducing key from encrypted original data
On Tue, Dec 11, 2001 at 01:00:40AM +0100, Dries Kimpe wrote: Hi, this is something I've been wondering for some time now: Is it possible (or at least much easier) to extract the encryption key if you both have the encrypted and original data? Dries PS. I know it isn't debian-related, but it's a good question anyway... It's called a known-plaintext attack. The answer depends on the encryption scheme, but one of the properties of a good scheme is that having a plaintext won't help you recover the key. In fact, this is an essential requirement for public-key cryptography, because the enemy can generate as much encrypted+plaintext data as they like. ...unless you are from Hollywood - in which case a good encryption scheme is one that can be cracked by having lots of digits flash up on the screen, and gradually have individual digits lock into the correct key. Andrew -- Andrew Bolt, [EMAIL PROTECTED] 110 Fulbourn Road, Cambridge, CB1 9NJ, ENGLAND, +44 1223 400650
