diff options
Diffstat (limited to 'usr.bin/cksum')
| -rw-r--r-- | usr.bin/cksum/cksum.1 | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/usr.bin/cksum/cksum.1 b/usr.bin/cksum/cksum.1 index 8e0062666b4..71fe39d2f5a 100644 --- a/usr.bin/cksum/cksum.1 +++ b/usr.bin/cksum/cksum.1 @@ -1,4 +1,4 @@ -.\" $OpenBSD: cksum.1,v 1.10 1999/07/21 01:25:42 deraadt Exp $ +.\" $OpenBSD: cksum.1,v 1.11 2000/03/05 20:09:20 aaron Exp $ .\" $NetBSD: cksum.1,v 1.8 1995/09/02 05:45:15 jtc Exp $ .\" .\" Copyright (c) 1991, 1993 @@ -52,7 +52,7 @@ .Op Ar file ... .Sh DESCRIPTION The -.Nm +.Nm cksum utility writes to the standard output three whitespace separated fields for each input file. These fields are a checksum @@ -64,7 +64,7 @@ is written. The .Nm sum utility is identical to the -.Nm +.Nm cksum utility, except that it defaults to using historic algorithm 1, as described below. It is provided for compatibility only. @@ -154,18 +154,19 @@ The bit sequence is complemented and the result is the CRC. .Ed .Pp The -.Nm +.Nm cksum and .Nm sum utilities exit 0 on success or >0 if an error occurred. .Sh WARNING Do not use -.Nm sum +.Nm cksum or -.Nm -to detect hostile binary modifications. An attacker -can trivially produce backdoored daemons which have the same CRC as the -standard versions. Use a cryptographic checksum (such as MD5) instead. +.Nm sum +to detect hostile binary modifications. +An attacker can trivially produce backdoored daemons which have the same +CRC as the standard versions. +Use a cryptographic checksum (such as MD5) instead. .Sh SEE ALSO .Xr md5 1 , .Xr rmd160 1 , @@ -183,19 +184,12 @@ article. .Re .Sh STANDARDS The -.Nm +.Nm cksum utility is compliant with the .St -p1003.2-92 specification. .Sh HISTORY The -.Nm +.Nm cksum utility appeared in .Bx 4.4 . -.\" .Pp -.\" The -.\" .Nm sum -.\" utility appeared in -.\" .Bx ?.? -.\" and -.\" .At V . |