openssl-env(7) - man - phpman

OPENSSL-ENV(7SSL)                              OpenSSL                             OPENSSL-ENV(7SSL)



NAME
       openssl-env - OpenSSL environment variables

DESCRIPTION
       The OpenSSL libraries use environment variables to override the compiled-in default paths for
       various data.  To avoid security risks, the environment is usually not consulted when the
       executable is set-user-ID or set-group-ID.

       CTLOG_FILE
           Specifies the path to a certificate transparency log list.  See CTLOG_STORE_new(3).

       OPENSSL
           Specifies the path to the openssl executable. Used by the rehash script (see "Script
           Configuration" in openssl-rehash(1)) and by the CA.pl script (see "NOTES" in CA.pl(1)

       OPENSSL_CONF, OPENSSL_CONF_INCLUDE
           Specifies the path to a configuration file and the directory for included files.  See
           config(5).

       OPENSSL_CONFIG
           Specifies a configuration option and filename for the req and ca commands invoked by the
           CA.pl script.  See CA.pl(1).

       OPENSSL_ENGINES
           Specifies the directory from which dynamic engines are loaded.  See openssl-engine(1).

       OPENSSL_MALLOC_FD, OPENSSL_MALLOC_FAILURES
           If built with debugging, this allows memory allocation to fail.  See OPENSSL_malloc(3).

       OPENSSL_MODULES
           Specifies the directory from which cryptographic providers are loaded.  Equivalently, the
           generic -provider-path command-line option may be used.

       OPENSSL_WIN32_UTF8
           If set, then UI_OpenSSL(3) returns UTF-8 encoded strings, rather than ones encoded in the
           current code page, and the openssl(1) program also transcodes the command-line parameters
           from the current code page to UTF-8.  This environment variable is only checked on
           Microsoft Windows platforms.

       RANDFILE
           The state file for the random number generator.  This should not be needed in normal use.
           See RAND_load_file(3).

       SSL_CERT_DIR, SSL_CERT_FILE
           Specify the default directory or file containing CA certificates.  See
           SSL_CTX_load_verify_locations(3).

       TSGET
           Additional arguments for the tsget(1) command.

       OPENSSL_ia32cap, OPENSSL_sparcv9cap, OPENSSL_ppccap, OPENSSL_armcap, OPENSSL_s390xcap
           OpenSSL supports a number of different algorithm implementations for various machines
           and, by default, it determines which to use based on the processor capabilities and run
           time feature enquiry.  These environment variables can be used to exert more control over
           this selection process.  See OPENSSL_ia32cap(3), OPENSSL_s390xcap(3).

       NO_PROXY, HTTPS_PROXY, HTTP_PROXY
           Specify a proxy hostname.  See OSSL_HTTP_parse_url(3).

COPYRIGHT
       Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (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>.



3.0.2                                        2026-04-07                            OPENSSL-ENV(7SSL)