openbsd/src/lib/libcrypto/man/BN_mod_inverse.3, branch OPENBSD_7_9_BASE A mirror of https://github.com/libressl/openbsd.git https://git.lua4.win/openbsd/atom?h=OPENBSD_7_9_BASE 2025-06-08T22:40:31+00:00 .Lb libcrypto ; OK tb@ 2025-06-08T22:40:31+00:00 schwarze 2025-06-08T22:40:31+00:00 urn:sha1:8be86af02fed1bda350c8dd14ee064cb66e3b0f5 style tweak: avoid double conjunction to make it read better 2023-10-21T13:53:43+00:00 schwarze 2023-10-21T13:53:43+00:00 urn:sha1:63cac9ae6edd0212366e4771232081cc7fd1175c OK tb@ Rename the modulus from n into m 2023-10-19T19:17:46+00:00 tb 2023-10-19T19:17:46+00:00 urn:sha1:c52bb2f029ce368de887eb7869931329d4af6bdd This matches what other pages use. Also rewrite the definition of the modular inverse to be less ugly. Add missing const qualifiers in a number of BN_* manuals. 2021-11-30T18:34:35+00:00 tb 2021-11-30T18:34:35+00:00 urn:sha1:dde92987aa87589258a2bf0945bd631409a3006d ok schwarze In view of the recent BN_FLG_CONSTTIME vulnerabilities in OpenSSL, 2018-04-29T15:58:21+00:00 schwarze 2018-04-29T15:58:21+00:00 urn:sha1:0cafa356a8c4c7fcd0ceea551f687c5d7fbef24e carefully document constant time vs. non-constant time operation of BN_div(3), BN_mod_exp(3), and BN_mod_inverse(3). Until the work that is required on the ill-designed BN_exp(3) and BN_gcd(3) interfaces can be undertaken, also document the imperfections in their behaviour, for now. Finally, mention BN_mod_exp(3) behaviour for even moduli. Delete the vague statement about some functions automatically setting BN_FLG_CONSTTIME. It created a false sense of security. Do not rely on it: not all relevant functions do that. Topic brought up by beck@, significant feedback and OK jsing@. found a complete archive of SSLeay-0.4 to SSLeay-0.8.1b tarballs 2018-03-27T17:35:50+00:00 schwarze 2018-03-27T17:35:50+00:00 urn:sha1:30d10c511917e0e339dec931667fc4b6eb014430 on the web, so fix up SSLeay HISTORY accordingly crypto HISTORY up to SSLeay 0.9.1; researched from OpenSSL git 2018-03-21T09:03:49+00:00 schwarze 2018-03-21T09:03:49+00:00 urn:sha1:9c6b7656d1237ca414073bcf0955561c2e9e90cc bn.h HISTORY up to SSLeay 0.8.1b; researched from OpenSSL git 2018-03-20T20:26:23+00:00 schwarze 2018-03-20T20:26:23+00:00 urn:sha1:07f97848a667870ec14d7a5a8446ae5e5c370e9c Document BN_set_flags(3) and BN_get_flags(3). 2017-01-30T01:29:31+00:00 schwarze 2017-01-30T01:29:31+00:00 urn:sha1:19dcc2c9146afbb7e7ee92dd56ef7f469c46c87e jsing@ confirmed that these macros are public and worth documenting. replace all references to bn(3) with BN_new(3), 2016-12-10T21:13:25+00:00 schwarze 2016-12-10T21:13:25+00:00 urn:sha1:14bc249be8db92222ed9b5d6bba0c94e30fae42d and make sure all BN*(3) pages point back to BN_new(3)