c_rehash(1ssl) [linux man page]

C_REHASH(1SSL)							      OpenSSL							    C_REHASH(1SSL)

NAME

       c_rehash - Create symbolic links to files named by the hash values

SYNOPSIS

       c_rehash [directory] ...

DESCRIPTION

       c_rehash scans directories and takes a hash value of each .pem and .crt file in the directory. It then creates symbolic links for each of
       the files named by the hash value. This is useful as many programs require directories to be set up like this in order to find the
       certificates they require.

       If any directories are named on the command line then these directories are processed in turn. If not then and the environment variable
       SSL_CERT_DIR is defined then that is consulted. This variable should be a colon (:) separated list of directories, all of which will be
       processed. If neither of these conditions are true then /usr/lib/ssl/certs is processed.

       For each directory that is to be processed he user must have write permissions on the directory, if they do not then nothing will be
       printed for that directory.

       Note that this program deletes all the symbolic links that look like ones that it creates before processing a directory. Beware that if you
       run the program on a directory that contains symbolic links for other purposes that are named in the same format as those created by this
       program they will be lost.

       The hashes for certificate files are of the form <hash>.<n> where n is an integer. If the hash value already exists then n will be
       incremented, unless the file is a duplicate. Duplicates are detected using the fingerprint of the certificate. A warning will be printed if
       a duplicate is detected. The hashes for CRL files are of the form <hash>.r<n> and have the same behavior.

       The program will also warn if there are files with extension .pem which are not certificate or CRL files.

       The program uses the openssl program to compute the hashes and fingerprints. It expects the executable to be named openssl and be on the
       PATH, or in the /usr/lib/ssl/bin directory. If the OPENSSL environment variable is defined then this is used instead as the executable that
       provides the hashes and fingerprints. When called as $OPENSSL x509 -hash -fingerprint -noout -in $file it must output the hash of $file on
       the first line followed by the fingerprint on the second line, optionally prefixed with some text and an equals sign (=).

OPTIONS

       None

ENVIRONMENT

       OPENSSL
	   The name (and path) of an executable to use to generate hashes and fingerprints (see above).

       SSL_CERT_DIR
	   Colon separated list of directories to operate on. Ignored if directories are listed on the command line.

SEE ALSO

       openssl(1), x509(1)

BUGS

       No known bugs

1.0.0e								    2013-02-18							    C_REHASH(1SSL)

CRL(1SSL)							      OpenSSL								 CRL(1SSL)

NAME

       openssl-crl, crl - CRL utility

SYNOPSIS

       openssl crl [-help] [-inform PEM|DER] [-outform PEM|DER] [-text] [-in filename] [-out filename] [-nameopt option] [-noout] [-hash]
       [-issuer] [-lastupdate] [-nextupdate] [-CAfile file] [-CApath dir]

DESCRIPTION

       The crl command processes CRL files in DER or PEM format.

OPTIONS

       -help
	   Print out a usage message.

       -inform DER|PEM
	   This specifies the input format. DER format is DER encoded CRL structure. PEM (the default) is a base64 encoded version of the DER form
	   with header and footer lines.

       -outform DER|PEM
	   This specifies the output format, the options have the same meaning and default as the -inform option.

       -in filename
	   This specifies the input filename to read from or standard input if this option is not specified.

       -out filename
	   Specifies the output filename to write to or standard output by default.

       -text
	   Print out the CRL in text form.

       -nameopt option
	   Option which determines how the subject or issuer names are displayed. See the description of -nameopt in x509(1).

       -noout
	   Don't output the encoded version of the CRL.

       -hash
	   Output a hash of the issuer name. This can be use to lookup CRLs in a directory by issuer name.

       -hash_old
	   Outputs the "hash" of the CRL issuer name using the older algorithm as used by OpenSSL before version 1.0.0.

       -issuer
	   Output the issuer name.

       -lastupdate
	   Output the lastUpdate field.

       -nextupdate
	   Output the nextUpdate field.

       -CAfile file
	   Verify the signature on a CRL by looking up the issuing certificate in file.

       -CApath dir
	   Verify the signature on a CRL by looking up the issuing certificate in dir. This directory must be a standard certificate directory:
	   that is a hash of each subject name (using x509 -hash) should be linked to each certificate.

NOTES

       The PEM CRL format uses the header and footer lines:

	-----BEGIN X509 CRL-----
	-----END X509 CRL-----

EXAMPLES

       Convert a CRL file from PEM to DER:

	openssl crl -in crl.pem -outform DER -out crl.der

       Output the text form of a DER encoded certificate:

	openssl crl -in crl.der -inform DER -text -noout

BUGS

       Ideally it should be possible to create a CRL using appropriate options and files too.

SEE ALSO

       crl2pkcs7(1), ca(1), x509(1)

COPYRIGHT

       Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.

       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>.

1.1.1a								    2018-12-18								 CRL(1SSL)