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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
commita9157ce950dfe2fc30795d43b9d79b9d1bffc48b (patch)
tree9df484304b560466d145e662c1c254ff0e9ae0ba /static/openbsd/man1/encrypt.1
parent160aa82b2d39c46ad33723d7d909cb4972efbb03 (diff)
docs: Added All OpenBSD Manuals
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+.\" $OpenBSD: encrypt.1,v 1.25 2014/12/24 22:04:26 tedu Exp $
+.\"
+.\" Copyright (c) 1996, Jason Downs. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
+.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
+.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd $Mdocdate: December 24 2014 $
+.Dt ENCRYPT 1
+.Os
+.Sh NAME
+.Nm encrypt
+.Nd encrypt passwords from the command line or standard input
+.Sh SYNOPSIS
+.Nm encrypt
+.Op Fl b Ar rounds
+.Op Fl c Ar class
+.Op Fl p | Ar string
+.Sh DESCRIPTION
+.Nm
+prints the encrypted form of
+.Ar string
+to the standard output.
+This is mostly useful for encrypting passwords from within scripts.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl b Ar rounds
+Encrypt the string using Blowfish hashing with the specified number of
+.Ar rounds .
+May also specify 'a' to request a variable number of rounds scaled to the
+machine's CPU capabilities.
+.It Fl c Ar class
+Use the cipher type specified in the given user login class.
+See
+.Xr login.conf 5
+for more information.
+.It Fl p
+Prompt for a single string with echo turned off.
+.El
+.Pp
+If no
+.Ar string
+is specified,
+.Nm
+reads one string per line from standard input, encrypting each one.
+In the case where no specific algorithm or specific user login class was given
+as a command line option, the algorithm specified in the default class in
+.Pa /etc/login.conf
+will be used.
+.Pp
+For Blowfish, a new random salt is automatically generated for each
+password.
+.Pp
+Specifying the
+.Ar string
+on the command line should be discouraged; using the
+standard input is more secure.
+.Sh FILES
+.Bl -tag -width /etc/login.conf -compact
+.It Pa /etc/login.conf
+.El
+.Sh SEE ALSO
+.Xr crypt_newhash 3 ,
+.Xr login.conf 5
+.Sh HISTORY
+.Nm
+first appeared in
+.Ox 1.2 .