1=pod
2
3=head1 NAME
4
5openssl-env - OpenSSL environment variables
6
7=head1 DESCRIPTION
8
9The OpenSSL libraries use environment variables to override the
10compiled-in default paths for various data.
11To avoid security risks, the environment is usually not consulted when
12the executable is set-user-ID or set-group-ID.
13
14=over 4
15
16=item B<CTLOG_FILE>
17
18Specifies the path to a certificate transparency log list.
19See L<CTLOG_STORE_new(3)>.
20
21=item B<OPENSSL>
22
23Specifies the path to the B<openssl> executable. Used by
24the B<rehash> script (see L<openssl-rehash(1)/Script Configuration>)
25and by the B<CA.pl> script (see L<CA.pl(1)/NOTES>
26
27=item B<OPENSSL_CONF>, B<OPENSSL_CONF_INCLUDE>
28
29Specifies the path to a configuration file and the directory for
30included files.
31See L<config(5)>.
32
33=item B<OPENSSL_CONFIG>
34
35Specifies a configuration option and filename for the B<req> and B<ca>
36commands invoked by the B<CA.pl> script.
37See L<CA.pl(1)>.
38
39=item B<OPENSSL_ENGINES>
40
41Specifies the directory from which dynamic engines are loaded.
42See L<openssl-engine(1)>.
43
44=item B<OPENSSL_MALLOC_FD>, B<OPENSSL_MALLOC_FAILURES>
45
46If built with debugging, this allows memory allocation to fail.
47See L<OPENSSL_malloc(3)>.
48
49=item B<OPENSSL_MODULES>
50
51Specifies the directory from which cryptographic providers are loaded.
52Equivalently, the generic B<-provider-path> command-line option may be used.
53
54=item B<OPENSSL_WIN32_UTF8>
55
56If set, then L<UI_OpenSSL(3)> returns UTF-8 encoded strings, rather than
57ones encoded in the current code page, and
58the L<openssl(1)> program also transcodes the command-line parameters
59from the current code page to UTF-8.
60This environment variable is only checked on Microsoft Windows platforms.
61
62=item B<RANDFILE>
63
64The state file for the random number generator.
65This should not be needed in normal use.
66See L<RAND_load_file(3)>.
67
68=item B<SSL_CERT_DIR>, B<SSL_CERT_FILE>
69
70Specify the default directory or file containing CA certificates.
71See L<SSL_CTX_load_verify_locations(3)>.
72
73=item B<TSGET>
74
75Additional arguments for the L<tsget(1)> command.
76
77=back
78
79=head1 COPYRIGHT
80
81Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
82
83Licensed under the Apache License 2.0 (the "License").  You may not use
84this file except in compliance with the License.  You can obtain a copy
85in the file LICENSE in the source distribution or at
86L<https://www.openssl.org/source/license.html>.
87
88=cut
89