Issue #1689 has been updated by tuxillo. Description updated Category set to Crypto Status changed from New to Feedback Assignee deleted (0) Priority changed from Normal to Low Target version set to 4.2.x
Hi Alex, Any opinion on this one? Cheers, Antonio Huete ---------------------------------------- Bug #1689: IBAA recommendation http://bugs.dragonflybsd.org/issues/1689#change-12529 * Author: robin.carey1 * Status: Feedback * Priority: Low * Assignee: * Category: Crypto * Target version: 4.2.x ---------------------------------------- Dear DragonFlyBSD bugs. DragonFly uses Bob Jenkins' IBAA CSPRNG for /dev/random. I have been doing some work on this CSPRNG, which is available from: http://www.leopard.uk.com/IBAA64 I have two recommendations to make with regard to the IBAA CSPRNG which is used in DragonFly: (1) Use my rounded up BETA=32/SHIFT=20 values as opposed to the original SHIFT=19 value in the original IBAA CSPRNG/algorithm (details available from above URL) and (2) Use a 32-bit counter. This is a minor modification, which gurantees no bad states (an initial state of all zeroes maps back to an internal state of all zeroes after 256 iterations), and also guarantees a cycle length of at least 2^32. Details on how to implement the counter are available from the above URL. It's a minor modification which has minimal performance impact. Also, a 64-bit version of IBAA is available from the above URL. Matthew Dillon seemed to be interested in that, with regard to the 64-bit x86-64 port of DragonFly (but I haven't heard back from him about that). ---Files-------------------------------- unnamed (1.4 KB) -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://bugs.dragonflybsd.org/my/account
