src-test2/sys/libkern/arc4random.c, branch release/6.3.0_cvs FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F6.3.0_cvs 2008-01-15T15:46:22Z This commit was manufactured by cvs2svn to create tag 2008-01-15T15:46:22Z cvs2svn cvs2svn@FreeBSD.org 2008-01-15T15:46:22Z urn:sha1:5cd221028ba5e7ada35a0dd196fb642b44f197d1 'RELENG_6_3_0_RELEASE'. This commit was manufactured to restore the state of the 6.3-RELEASE image. Lock down arc4random so it can be safely called w/o Giant. 2003-08-15T06:34:47Z Mike Silbersack silby@FreeBSD.org 2003-08-15T06:34:47Z urn:sha1:2f823fa326f4b593bb8b9e74606e70a864c25426 Minor code reorganization was required, but the only functional change was that the first 1024 bytes of output are thrown out after each reseed, rather than just the initial seed. Use __FBSDID(). 2003-06-11T05:37:42Z David E. O'Brien obrien@FreeBSD.org 2003-06-11T05:37:42Z urn:sha1:ab0de15baf7234734b1b64c3145cd36f867c98ea Slight overhaul of arc4random() and friends. 2002-10-11T13:13:08Z Poul-Henning Kamp phk@FreeBSD.org 2002-10-11T13:13:08Z urn:sha1:2c38619b524c7d3ada336fc2aa3afcbb7dbff0f5 One bug fixed: Use getmicrouptime() to trigger reseeds so that we cannot be tricked by a clock being stepped backwards. Express parameters in natural units and with natural names. Don't use struct timeval more than we need to. Various stylistic and readability polishing. Introduce arc4rand(void *ptr, u_int len, int reseed) function which returns a stream of pseudo-random bytes, observing the automatic reseed criteria as well as allowing forced reseeds. Rewrite arc4random() in terms of arc4rand(). Sponsored by: DARPA & NAI Labs. Fixed some typos, verboseness and misformatting in comments. 2001-08-30T12:30:58Z Bruce Evans bde@FreeBSD.org 2001-08-30T12:30:58Z urn:sha1:60f8e3af927efe398a78f8fe960ab14a132a066b Minor improvements to arc4random(): 2001-08-30T01:15:25Z Mike Silbersack silby@FreeBSD.org 2001-08-30T01:15:25Z urn:sha1:3a7810bc39bcf802c5cd2c95364a2b0bb8744356 - Decrease reseeding interval from every 64 to every 16384 runs to reduce entropy usage. - Add time based reseeding. (Every 5 minutes.) - Throw away the first 256 words of output as suggested in "Weaknesses in the Key Scheduling Algorithm of RC4." Reviewed by: Mark Murray MFC After: jkh says ok Recouple arc4random(9) to the entropy device. This works whether the 2000-12-02T16:23:54Z Mark Murray markm@FreeBSD.org 2000-12-02T16:23:54Z urn:sha1:4cb1e53914f0333c68cecbac7c3e4ca054cd84be entropy device is loaded or not. If the entropy device is NOT loaded, the the quality of perturbations supplied by this will suffer. Back out previous revision now that sys/random.h is properly fixed. 2000-09-11T19:34:04Z John Baldwin jhb@FreeBSD.org 2000-09-11T19:34:04Z urn:sha1:e2059d0bfbc164748cd0cdb85f047c31df162eb5 Add #include's of sys/proc.h and sys/param.h to silence a warning. 2000-09-11T05:51:58Z John Baldwin jhb@FreeBSD.org 2000-09-11T05:51:58Z urn:sha1:ebbb6afce34728d917b233ee192643b5f4283655 Comment out unavailable call. This needs to be revisited when the entropy 2000-06-25T10:15:58Z Mark Murray markm@FreeBSD.org 2000-06-25T10:15:58Z urn:sha1:bf3191e9fa00fe44c58cfd0484fa1cbee135f3f0 device is complete. Reviewed by: dfr