Date: Sun, 12 Mar 2017 13:14:49 +0000 (UTC) From: =?UTF-8?Q?Dag-Erling_Sm=c3=b8rgrav?= <des@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r315147 - stable/11/sbin/md5 Message-ID: <201703121314.v2CDEnWa057778@repo.freebsd.org>
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Author: des Date: Sun Mar 12 13:14:49 2017 New Revision: 315147 URL: https://svnweb.freebsd.org/changeset/base/315147 Log: MFH (r314528): update to reflect the state of SHA-1 Modified: stable/11/sbin/md5/md5.1 Directory Properties: stable/11/ (props changed) Modified: stable/11/sbin/md5/md5.1 ============================================================================== --- stable/11/sbin/md5/md5.1 Sun Mar 12 12:38:16 2017 (r315146) +++ stable/11/sbin/md5/md5.1 Sun Mar 12 13:14:49 2017 (r315147) @@ -67,21 +67,17 @@ 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 @@ -94,6 +90,8 @@ 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 musthelp
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