d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mdoc'ify man page

Browse Source
This commit is contained in:
jmg 1997-03-02 21:43:10 +00:00
parent 26bd0fe0b6
commit b6a02cdd45
1 changed files with 49 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
sbin/md5/md5.1
View File

@ -1,46 +1,60 @@
.TH MD5 1 "Feb 14, 1994"
.SH NAME
md5 \- calculate a message-digest fingerprint (checksum) for a file
.SH SYNOPSIS
.B md5
[ -p | -t | -x | -sstring | filename(s) ]
.SH DESCRIPTION
.B md5
.Dd Feburary 14, 1994
.Dt MD5 1
.Os
.Sh NAME
.Nm md5
.Nd calculate a message-digest fingerprint (checksum) for a file
.Sh SYNOPSIS
.Nm
.Op Fl p
.Op Fl t
.Op Fl x
.Op Fl s Ns Ar string
.Op Ar filename Ns Pq s
.Sh DESCRIPTION
.Nm
takes as input a message of arbitrary length and produces
as output a 128-bit "fingerprint" or "message digest" of the input.
It is conjectured that it is computationally infeasible to produce
two messages having the same message digest, or to produce any
as output a 128-bit
.Dq fingerprint
or
.Dq message digest
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 MD5 algorithm is intended for digital signature applications, where a
large file must be "compressed" in a secure manner before being
encrypted with a private (secret) key under a public-key cryptosystem
such as
.I RSA.
.SH OPTIONS
large file must be
.Dq compressed
in a secure manner before being encrypted with a private
.Pq secret
key under a public-key cryptosystem such as
.Em RSA .
.Pp
The following four options may be used in any combination, except
that
.B "filename(s)"
.Ar filename Ns Pq s
must be the last objects on the command line.
.in +5
.PP
.B -sstring
prints a checksum of the given "string".
.PP
.B -p
.Bl -tag -width Fl
.It Fl s Ns Ar string
prints a checksum of the given
.Dq string .
.It Fl p
echos stdin to stdout and appends the MD5 sum to stdout.
.PP
.B -t
.It Fl t
runs a built-in time trial.
.PP
.B -x
.It Fl x
runs a built-in test script.
.PP
.B filename(s)
prints a checksum(s) for each of the files.
.SH "SEE ALSO"
.BR cksum (1)
.PP
RFC 1321 describes in detail the MD2, MD4, and MD5 message-digest algorithms.
.SH ACKNOWLEDGEMENTS
.It Ar filename Ns Pq s
prints a checksum
.Pq s
for each of the files.
.El
.Sh SEE ALSO
.Xr cksum 1
.Rs
.%A R. Rivest
.%T The MD5 Message-Digest Algorithm
.%O RFC1321
.Re
.Sh ACKNOWLEDGEMENTS
This program is placed in the public domain for free general use by
RSA Data Security.