Re: Mersenne: Security of prime95

2001-03-12 Thread Alexander Kruppa
Compiling a forge version with malicious code of Prime95/mprime and distributing it is maybe the simples and possibly most devastating attack. Since the complete source (save for the Primenet checksums but these could either be reverse-engineered or the fake client could simply connect to a fake

Re: Mersenne: prime95 - v21 progress

2001-03-12 Thread Siegmar Szlavik
On Sun, 11 Mar 2001 07:55:04 -0600, Steve wrote: [...] As others have mentioned, the problem is NOT slow machines but rather abandoned exponents, which has nothing to do with machine speeds. exactly... and that is the point... maybe someone with access to the server logs can give us a rough

Re: Mersenne: prime95 - v21 progress

2001-03-12 Thread Brian J. Beesley
On 12 Mar 2001, at 0:20, Alexander Kruppa wrote: (1) Removing these assignments from PrimeNet and managing them seperately. Anyone who is prepared to make special arrangements to acquire these assignments is unlikely to default by reason of lack of commitment. Someone is (or was?)

Re: Mersenne: Security of prime95

2001-03-12 Thread Brian J. Beesley
On 12 Mar 2001, at 12:53, Alexander Kruppa wrote: Compiling a forge version with malicious code of Prime95/mprime and distributing it is maybe the simples and possibly most devastating attack. Yes. This is much the most likely "exploit". The other putative exploits are IMHO so unlikely as

Mersenne: milestones

2001-03-12 Thread George Woltman
Hi all, There is another, and perhaps the most important reason, progress on double-checking milestones has been slow. When a double-check is sent in the server does not have enough information to know if a triple-check is needed. That info is in my master database - 3000 miles away.

Re: Mersenne: Primitive roots for Galois transforms?

2001-03-12 Thread EWMAYER
Jason Stratos Papadopoulos wrote (to Peter Montgomery): Ernst Mayer and I exchanged many mailings about using GF(p^2) when p = 2^61 - 1. I thought he had implemented it, as part of a mixed integer/complex FFT. As I remember, he *had* implemented it but the project is in limbo

Mersenne: VB primality test program

2001-03-12 Thread Monte Westlund
Hello all, I'm looking for a primality test program source code written in VB, for fun and adventure. Just want to mess around a little. Searched a little with no luck. Running Prime95, just made 7755 ranking. WooHoo! Monte

Re: Mersenne: VB primality test program

2001-03-12 Thread John R Pierce
I'm looking for a primality test program source code written in VB, for fun and adventure. Just want to mess around a little. Searched a little with no luck. I'm afraid VB would be awfully slow at any sort of intensive numerical work like this, and not very good with precision either, so I

Re: Mersenne: Security of prime95

2001-03-12 Thread Daran
-Original Message- From: Brian J. Beesley [EMAIL PROTECTED] To: Daran [EMAIL PROTECTED] Date: 12 March 2001 21:08 Subject: Re: Mersenne: Security of prime95 On 12 Mar 2001, at 6:03, Daran wrote: Now I'm not saying it's sensible to ignore risk, or not to take reasonable measures to