Date: Mon, 15 Jun 2020 10:08:02 +0000 (UTC) From: =?UTF-8?Q?Fernando_Apestegu=c3=ada?= <fernape@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362191 - head/sbin/md5 Message-ID: <202006151008.05FA82YG031030@repo.freebsd.org>
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Author: fernape (ports committer) Date: Mon Jun 15 10:08:02 2020 New Revision: 362191 URL: https://svnweb.freebsd.org/changeset/base/362191 Log: md5(1): fix style in man page Fix a bunch of style problems reported by mandoc(1) and igor: mandoc: ./md5.1:19:71: STYLE: no blank before trailing delimiter: Nm ... rmd160, mandoc: ./md5.1:20:23: STYLE: no blank before trailing delimiter: Nm ... skein512, mandoc: ./md5.1:33:2: STYLE: useless macro: Tn mandoc: ./md5.1:33:2: STYLE: useless macro: Tn mandoc: ./md5.1:33:2: STYLE: useless macro: Tn mandoc: ./md5.1:33:2: STYLE: useless macro: Tn mandoc: ./md5.1:35:2: STYLE: useless macro: Tn mandoc: ./md5.1:42:2: STYLE: useless macro: Tn mandoc: ./md5.1:45:2: STYLE: useless macro: Tn mandoc: ./md5.1:47:2: STYLE: useless macro: Tn mandoc: ./md5.1:56:2: STYLE: useless macro: Tn mandoc: ./md5.1:58:2: STYLE: useless macro: Tn mandoc: ./md5.1:61:2: STYLE: useless macro: Tn mandoc: ./md5.1:66:2: STYLE: useless macro: Tn mandoc: ./md5.1:68:2: STYLE: useless macro: Tn mandoc: ./md5.1:104:24: STYLE: no blank before trailing delimiter: Nm skein512, mandoc: ./md5.1:117:6: STYLE: referenced manual not found: Xr sha224 3 igor: md5.1:46:no comma after "i.e.":either algorithm, [i.e.] to find an input that produces a specific Approved by: bcr@ Differential Revision: https://reviews.freebsd.org/D25277 Modified: head/sbin/md5/md5.1 Modified: head/sbin/md5/md5.1 ============================================================================== --- head/sbin/md5/md5.1 Mon Jun 15 03:10:53 2020 (r362190) +++ head/sbin/md5/md5.1 Mon Jun 15 10:08:02 2020 (r362191) @@ -1,5 +1,5 @@ .\" $FreeBSD$ -.Dd July 9, 2018 +.Dd June 15, 2020 .Dt MD5 1 .Os .Sh NAME @@ -16,8 +16,8 @@ (All other hashes have the same options and usage.) .Sh DESCRIPTION The -.Nm md5 , sha1 , sha224 , sha256 , sha384 , sha512, sha512t256, rmd160, -.Nm skein256, skein512, +.Nm md5 , sha1 , sha224 , sha256 , sha384 , sha512 , sha512t256 , rmd160 , +.Nm skein256 , skein512 , and .Nm skein1024 utilities take as input a message of arbitrary length and produce as @@ -29,43 +29,29 @@ of the input. It is conjectured that it is computationally infeasible to produce two messages having the same message digest, or to produce any message having a given prespecified target message digest. -The -.Tn SHA-224 , SHA-256 , SHA-384 , SHA-512, RIPEMD-160, -and -.Tn SKEIN +The SHA-224 , SHA-256 , SHA-384 , SHA-512, RIPEMD-160, +and SKEIN algorithms are intended for digital signature applications, where a large file must be .Dq compressed in a secure manner before being encrypted with a private (secret) -key under a public-key cryptosystem such as -.Tn RSA . +key under a public-key cryptosystem such as RSA. .Pp -The -.Tn MD5 -and -.Tn SHA-1 -algorithms have been proven to be vulnerable to practical collision -attacks and should not be relied upon to produce unique outputs, +The MD5 and SHA-1 algorithms have been proven to be vulnerable to practical +collision attacks and should not be relied upon to produce unique outputs, .Em nor should they be used as part of a cryptographic signature scheme. As of 2017-03-02, there is no publicly known method to .Em reverse -either algorithm, i.e. to find an input that produces a specific +either algorithm, i.e., to find an input that produces a specific output. .Pp -.Tn SHA-512t256 -is a version of -.Tn SHA-512 -truncated to only 256 bits. -On 64-bit hardware, this algorithm is approximately 50% faster than -.Tn SHA-256 -but with the same level of security. +SHA-512t256 is a version of SHA-512 truncated to only 256 bits. +On 64-bit hardware, this algorithm is approximately 50% faster than SHA-256 but +with the same level of security. The hashes are not interchangeable. .Pp -It is recommended that all new applications use -.Tn SHA-512 -or -.Tn SKEIN-512 +It is recommended that all new applications use SHA-512 or SKEIN-512 instead of one of the other hash functions. .Pp The following options may be used in any combination and must @@ -101,7 +87,7 @@ Run a built-in test script. .Sh EXIT STATUS The .Nm md5 , sha1 , sha224 , sha256 , sha512 , sha512t256 , rmd160 , -.Nm skein256 , skein512, +.Nm skein256 , skein512 , and .Nm skein1024 utilities exit 0 on success, @@ -114,7 +100,6 @@ option. .Xr md5 3 , .Xr ripemd 3 , .Xr sha 3 , -.Xr sha224 3 , .Xr sha256 3 , .Xr sha384 3 , .Xr sha512 3 ,
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