Admin

name	type	size	perms	modified	actions
[parent directory]
asn1parse.1ssl	file	8,507 B	0644	2026-08-05 00:00:00	edit
c_rehash.1ssl	file	6,184 B	0644	2026-08-05 00:00:00	edit
ca.1ssl	file	30,120 B	0644	2026-08-05 00:00:00	edit
CA.pl.1ssl	file	9,543 B	0644	2026-08-05 00:00:00	edit
ciphers.1ssl	file	34,251 B	0644	2026-08-05 00:00:00	edit
cms.1ssl	file	29,505 B	0644	2026-08-05 00:00:00	edit
crl.1ssl	file	5,044 B	0644	2026-08-05 00:00:00	edit
crl2pkcs7.1ssl	file	4,770 B	0644	2026-08-05 00:00:00	edit
dgst.1ssl	file	9,093 B	0644	2026-08-05 00:00:00	edit
dhparam.1ssl	file	6,672 B	0644	2026-08-05 00:00:00	edit
dsa.1ssl	file	7,405 B	0644	2026-08-05 00:00:00	edit
dsaparam.1ssl	file	5,412 B	0644	2026-08-05 00:00:00	edit
ec.1ssl	file	8,220 B	0644	2026-08-05 00:00:00	edit
ecparam.1ssl	file	7,517 B	0644	2026-08-05 00:00:00	edit
enc.1ssl	file	17,175 B	0644	2026-08-05 00:00:00	edit
engine.1ssl	file	4,859 B	0644	2026-08-05 00:00:00	edit
errstr.1ssl	file	2,608 B	0644	2026-08-05 00:00:00	edit
gendsa.1ssl	file	4,602 B	0644	2026-08-05 00:00:00	edit
genpkey.1ssl	file	13,032 B	0644	2026-08-05 00:00:00	edit
genrsa.1ssl	file	5,725 B	0644	2026-08-05 00:00:00	edit
list.1ssl	file	3,992 B	0644	2026-08-05 00:00:00	edit
nseq.1ssl	file	3,892 B	0644	2026-08-05 00:00:00	edit
ocsp.1ssl	file	20,880 B	0644	2026-08-05 00:00:00	edit
openssl-asn1parse.1ssl	file	8,507 B	0644	2026-08-05 00:00:00	edit
openssl-c_rehash.1ssl	file	6,184 B	0644	2026-08-05 00:00:00	edit
openssl-ca.1ssl	file	30,120 B	0644	2026-08-05 00:00:00	edit
openssl-ciphers.1ssl	file	34,251 B	0644	2026-08-05 00:00:00	edit
openssl-cms.1ssl	file	29,505 B	0644	2026-08-05 00:00:00	edit
openssl-crl.1ssl	file	5,044 B	0644	2026-08-05 00:00:00	edit
openssl-crl2pkcs7.1ssl	file	4,770 B	0644	2026-08-05 00:00:00	edit
openssl-dgst.1ssl	file	9,093 B	0644	2026-08-05 00:00:00	edit
openssl-dhparam.1ssl	file	6,672 B	0644	2026-08-05 00:00:00	edit
openssl-dsa.1ssl	file	7,405 B	0644	2026-08-05 00:00:00	edit
openssl-dsaparam.1ssl	file	5,412 B	0644	2026-08-05 00:00:00	edit
openssl-ec.1ssl	file	8,220 B	0644	2026-08-05 00:00:00	edit
openssl-ecparam.1ssl	file	7,517 B	0644	2026-08-05 00:00:00	edit
openssl-enc.1ssl	file	17,175 B	0644	2026-08-05 00:00:00	edit
openssl-engine.1ssl	file	4,859 B	0644	2026-08-05 00:00:00	edit
openssl-errstr.1ssl	file	2,608 B	0644	2026-08-05 00:00:00	edit
openssl-gendsa.1ssl	file	4,602 B	0644	2026-08-05 00:00:00	edit
openssl-genpkey.1ssl	file	13,032 B	0644	2026-08-05 00:00:00	edit
openssl-genrsa.1ssl	file	5,725 B	0644	2026-08-05 00:00:00	edit
openssl-list.1ssl	file	3,992 B	0644	2026-08-05 00:00:00	edit
openssl-nseq.1ssl	file	3,892 B	0644	2026-08-05 00:00:00	edit
openssl-ocsp.1ssl	file	20,880 B	0644	2026-08-05 00:00:00	edit
openssl-passwd.1ssl	file	4,789 B	0644	2026-08-05 00:00:00	edit
openssl-pkcs12.1ssl	file	15,388 B	0644	2026-08-05 00:00:00	edit
openssl-pkcs7.1ssl	file	4,704 B	0644	2026-08-05 00:00:00	edit
openssl-pkcs8.1ssl	file	13,175 B	0644	2026-08-05 00:00:00	edit
openssl-pkey.1ssl	file	6,455 B	0644	2026-08-05 00:00:00	edit
openssl-pkeyparam.1ssl	file	3,823 B	0644	2026-08-05 00:00:00	edit
openssl-pkeyutl.1ssl	file	13,361 B	0644	2026-08-05 00:00:00	edit
openssl-prime.1ssl	file	3,021 B	0644	2026-08-05 00:00:00	edit
openssl-rand.1ssl	file	4,306 B	0644	2026-08-05 00:00:00	edit
openssl-rehash.1ssl	file	6,184 B	0644	2026-08-05 00:00:00	edit
openssl-req.1ssl	file	27,553 B	0644	2026-08-05 00:00:00	edit
openssl-rsa.1ssl	file	8,062 B	0644	2026-08-05 00:00:00	edit
openssl-rsautl.1ssl	file	8,356 B	0644	2026-08-05 00:00:00	edit
openssl-s_client.1ssl	file	33,403 B	0644	2026-08-05 00:00:00	edit
openssl-s_server.1ssl	file	31,717 B	0644	2026-08-05 00:00:00	edit
openssl-s_time.1ssl	file	9,719 B	0644	2026-08-05 00:00:00	edit
openssl-sess_id.1ssl	file	6,369 B	0644	2026-08-05 00:00:00	edit
openssl-smime.1ssl	file	20,736 B	0644	2026-08-05 00:00:00	edit
openssl-speed.1ssl	file	4,655 B	0644	2026-08-05 00:00:00	edit
openssl-spkac.1ssl	file	6,050 B	0644	2026-08-05 00:00:00	edit
openssl-srp.1ssl	file	3,436 B	0644	2026-08-05 00:00:00	edit
openssl-storeutl.1ssl	file	5,141 B	0644	2026-08-05 00:00:00	edit
openssl-ts.1ssl	file	25,532 B	0644	2026-08-05 00:00:00	edit
openssl-tsget.1ssl	file	8,718 B	0644	2026-08-05 00:00:00	edit
openssl-verify.1ssl	file	30,753 B	0644	2026-08-05 00:00:00	edit
openssl-version.1ssl	file	2,971 B	0644	2026-08-05 00:00:00	edit
openssl-x509.1ssl	file	34,687 B	0644	2026-08-05 00:00:00	edit
openssl.1ssl	file	18,419 B	0644	2026-08-05 00:00:00	edit
passwd.1ssl	file	4,789 B	0644	2026-08-05 00:00:00	edit
pkcs12.1ssl	file	15,388 B	0644	2026-08-05 00:00:00	edit
pkcs7.1ssl	file	4,704 B	0644	2026-08-05 00:00:00	edit
pkcs8.1ssl	file	13,175 B	0644	2026-08-05 00:00:00	edit
pkey.1ssl	file	6,455 B	0644	2026-08-05 00:00:00	edit
pkeyparam.1ssl	file	3,823 B	0644	2026-08-05 00:00:00	edit
pkeyutl.1ssl	file	13,361 B	0644	2026-08-05 00:00:00	edit
prime.1ssl	file	3,021 B	0644	2026-08-05 00:00:00	edit
rand.1ssl	file	4,306 B	0644	2026-08-05 00:00:00	edit
rehash.1ssl	file	6,184 B	0644	2026-08-05 00:00:00	edit
req.1ssl	file	27,553 B	0644	2026-08-05 00:00:00	edit
rsa.1ssl	file	8,062 B	0644	2026-08-05 00:00:00	edit
rsautl.1ssl	file	8,356 B	0644	2026-08-05 00:00:00	edit
s_client.1ssl	file	33,403 B	0644	2026-08-05 00:00:00	edit
s_server.1ssl	file	31,717 B	0644	2026-08-05 00:00:00	edit
s_time.1ssl	file	9,719 B	0644	2026-08-05 00:00:00	edit
sess_id.1ssl	file	6,369 B	0644	2026-08-05 00:00:00	edit
smime.1ssl	file	20,736 B	0644	2026-08-05 00:00:00	edit
speed.1ssl	file	4,655 B	0644	2026-08-05 00:00:00	edit
spkac.1ssl	file	6,050 B	0644	2026-08-05 00:00:00	edit
srp.1ssl	file	3,436 B	0644	2026-08-05 00:00:00	edit
storeutl.1ssl	file	5,141 B	0644	2026-08-05 00:00:00	edit
ts.1ssl	file	25,532 B	0644	2026-08-05 00:00:00	edit
tsget.1ssl	file	8,718 B	0644	2026-08-05 00:00:00	edit
verify.1ssl	file	30,753 B	0644	2026-08-05 00:00:00	edit
version.1ssl	file	2,971 B	0644	2026-08-05 00:00:00	edit
x509.1ssl	file	34,687 B	0644	2026-08-05 00:00:00	edit

editing: c_rehash.1ssl

.\" -*- mode: troff; coding: utf-8 -*-
.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.45)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
.ie n \{\
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is >0, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{\
.    if \nF \{\
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{\
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\" ========================================================================
.\"
.IX Title "REHASH 1"
.TH REHASH 1 2026-08-05 1.1.1w OpenSSL
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
openssl\-c_rehash, openssl\-rehash,
c_rehash, rehash \- Create symbolic links to files named by the hash values
.SH SYNOPSIS
.IX Header "SYNOPSIS"
\&\fBopenssl\fR
\&\fBrehash\fR
\&\fB[\-h]\fR
\&\fB[\-help]\fR
\&\fB[\-old]\fR
\&\fB[\-n]\fR
\&\fB[\-v]\fR
[ \fIdirectory\fR...]
.PP
\&\fBc_rehash\fR
\&\fIflags...\fR
.SH DESCRIPTION
.IX Header "DESCRIPTION"
On some platforms, the OpenSSL \fBrehash\fR command is available as
an external script called \fBc_rehash\fR.  They are functionally equivalent,
except for minor differences noted below.
.PP
\&\fBrehash\fR scans directories and calculates a hash value of each
\&\f(CW\*(C`.pem\*(C'\fR, \f(CW\*(C`.crt\*(C'\fR, \f(CW\*(C`.cer\*(C'\fR, or \f(CW\*(C`.crl\*(C'\fR
file in the specified directory list and creates symbolic links
for each file, where the name of the link is the hash value.
(If the platform does not support symbolic links, a copy is made.)
This utility is useful as many programs that use OpenSSL require
directories to be set up like this in order to find certificates.
.PP
If any directories are named on the command line, then those are
processed in turn. If not, then the \fBSSL_CERT_DIR\fR environment variable
is consulted; this should be a colon-separated list of directories,
like the Unix \fBPATH\fR variable.
If that is not set then the default directory (installation-specific
but often \fB/usr/local/ssl/certs\fR) is processed.
.PP
In order for a directory to be processed, the user must have write
permissions on that directory, otherwise an error will be generated.
.PP
The links created are of the form \f(CW\*(C`HHHHHHHH.D\*(C'\fR, where each \fBH\fR
is a hexadecimal character and \fBD\fR is a single decimal digit.
When processing a directory, \fBrehash\fR will first remove all links
that have a name in that syntax, even if they are being used for some
other purpose.
To skip the removal step, use the \fB\-n\fR flag.
Hashes for CRL's look similar except the letter \fBr\fR appears after
the period, like this: \f(CW\*(C`HHHHHHHH.rD\*(C'\fR.
.PP
Multiple objects may have the same hash; they will be indicated by
incrementing the \fBD\fR value. Duplicates are found by comparing the
full SHA\-1 fingerprint. A warning will be displayed if a duplicate
is found.
.PP
A warning will also be displayed if there are files that
cannot be parsed as either a certificate or a CRL or if
more than one such object appears in the file.
.SS "Script Configuration"
.IX Subsection "Script Configuration"
The \fBc_rehash\fR script
uses the \fBopenssl\fR program to compute the hashes and
fingerprints. If not found in the user's \fBPATH\fR, then set the
\&\fBOPENSSL\fR environment variable to the full pathname.
Any program can be used, it will be invoked as follows for either
a certificate or CRL:
.PP
.Vb 2
\&  $OPENSSL x509 \-hash \-fingerprint \-noout \-in FILENAME
\&  $OPENSSL crl \-hash \-fingerprint \-noout \-in FILENAME
.Ve
.PP
where \fBFILENAME\fR is the filename. It must output the hash of the
file on the first line, and the fingerprint on the second,
optionally prefixed with some text and an equals sign.
.SH OPTIONS
.IX Header "OPTIONS"
.IP "\fB\-help\fR \fB\-h\fR" 4
.IX Item "-help -h"
Display a brief usage message.
.IP \fB\-old\fR 4
.IX Item "-old"
Use old-style hashing (MD5, as opposed to SHA\-1) for generating
links to be used for releases before 1.0.0.
Note that current versions will not use the old style.
.IP \fB\-n\fR 4
.IX Item "-n"
Do not remove existing links.
This is needed when keeping new and old-style links in the same directory.
.IP \fB\-compat\fR 4
.IX Item "-compat"
Generate links for both old-style (MD5) and new-style (SHA1) hashing.
This allows releases before 1.0.0 to use these links along-side newer
releases.
.IP \fB\-v\fR 4
.IX Item "-v"
Print messages about old links removed and new links created.
By default, \fBrehash\fR only lists each directory as it is processed.
.SH ENVIRONMENT
.IX Header "ENVIRONMENT"
.IP \fBOPENSSL\fR 4
.IX Item "OPENSSL"
The path to an executable to use to generate hashes and
fingerprints (see above).
.IP \fBSSL_CERT_DIR\fR 4
.IX Item "SSL_CERT_DIR"
Colon separated list of directories to operate on.
Ignored if directories are listed on the command line.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBopenssl\fR\|(1),
\&\fBcrl\fR\|(1).
\&\fBx509\fR\|(1).
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2015\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the "License").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.

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