Author: des Date: Thu Mar 2 00:27:21 2017 New Revision: 314528 URL: https://svnweb.freebsd.org/changeset/base/314528
Log: Update to reflect that SHA-1 has now been broken. Submitted by: ak MFC after: 1 week Modified: head/sbin/md5/md5.1 Modified: head/sbin/md5/md5.1 ============================================================================== --- head/sbin/md5/md5.1 Thu Mar 2 00:11:32 2017 (r314527) +++ head/sbin/md5/md5.1 Thu Mar 2 00:27:21 2017 (r314528) @@ -1,5 +1,5 @@ .\" $FreeBSD$ -.Dd January 7, 2017 +.Dd March 2, 2017 .Dt MD5 1 .Os .Sh NAME @@ -84,21 +84,17 @@ in a secure manner before being encrypte key under a public-key cryptosystem such as .Tn RSA . .Pp +The .Tn MD5 -has been completely broken as far as finding collisions is -concerned, and should not be relied upon to produce unique outputs. -This also means that -.Tn MD5 -should not be used as part of a cryptographic signature scheme. -At the current time (2014-05-17) there is no publicly known method to -.Dq reverse -MD5, i.e., to find an input given a hash value. -.Pp -.Tn SHA-1 -currently (2014-05-17) has no known collisions, but an attack has been -found which is faster than a brute-force search, placing the security of +and .Tn SHA-1 -in doubt. +algorithms have been proven to be vulnerable to practical collision +attacks and should not be relied upon to produce unique outputs, nor +should they be used as part of a cryptographic signature scheme. +As of 2016-03-02, there is no publicly known method to +.Em reverse +either algorithm, i.e. to find an input that produces a specific +output. .Pp .Tn SHA-512t256 is a version of @@ -111,6 +107,8 @@ The hashes are not interchangeable. .Pp It is recommended that all new applications use .Tn SHA-512 +or +.Tn SKEIN-512 instead of one of the other hash functions. .Pp The following options may be used in any combination and must _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
