Re: [cryptography] DES history

2014-05-07 Thread Marcus Brinkmann
On 05/07/2014 08:31 AM, Joshua Hill wrote: On Mon, May 05, 2014 at 10:37:48PM +0200, Marcus Brinkmann wrote: It is well known that the DES S-Boxes were specifically designed (by the NSA, no less, back in the good ol' days) to protect against that attack. This was the lore for years after the

Re: [cryptography] DES history

2014-05-05 Thread Givon Zirkind
A question about DES. Did anyone ever try map or graph the routes through the S-boxes? I mean pictorially. Do the routes produce some kind of wave or path, that have (or have not) relationships with the other routes? ___ cryptography mailing list

Re: [cryptography] DES history

2014-05-05 Thread Marcus Brinkmann
On 05/05/2014 09:08 PM, Givon Zirkind wrote: A question about DES. Did anyone ever try map or graph the routes through the S-boxes? I mean pictorially. Do the routes produce some kind of wave or path, that have (or have not) relationships with the other routes? This is a vague question,

Re: [cryptography] DES history

2014-05-05 Thread Marcus Brinkmann
On 05/05/2014 10:37 PM, Marcus Brinkmann wrote: On 05/05/2014 09:08 PM, Givon Zirkind wrote: A question about DES. Did anyone ever try map or graph the routes through the S-boxes? I mean pictorially. Do the routes produce some kind of wave or path, that have (or have not) relationships with

Re: [cryptography] DES history

2014-05-05 Thread Dave Horsfall
On Mon, 5 May 2014, Marcus Brinkmann wrote: It is well known that the DES S-Boxes were specifically designed (by the NSA, no less, back in the good ol' days) to protect against that attack. If I recall Schneier, the S-boxes were *modified* by the NSA, not designed. -- Dave

Re: [cryptography] DES history

2014-05-05 Thread Dave Horsfall
A question about DES. Did anyone ever try map or graph the routes through the S-boxes? I mean pictorially. Do the routes produce some kind of wave or path, that have (or have not) relationships with the other routes? Mentioned in Schneier, I believe. -- Dave

Re: [cryptography] DES history

2014-05-05 Thread Bernie Cosell
On 6 May 2014 at 8:35, Dave Horsfall wrote: On Mon, 5 May 2014, Marcus Brinkmann wrote: It is well known that the DES S-Boxes were specifically designed (by the NSA, no less, back in the good ol' days) to protect against that attack. If I recall Schneier, the S-boxes were *modified*

Re: [cryptography] DES history

2014-05-05 Thread Marcus Brinkmann
On 05/06/2014 01:20 AM, Bernie Cosell wrote: On 6 May 2014 at 8:35, Dave Horsfall wrote: On Mon, 5 May 2014, Marcus Brinkmann wrote: It is well known that the DES S-Boxes were specifically designed (by the NSA, no less, back in the good ol' days) to protect against that attack. If I