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_TRACE
           By default the OpenSSL trace feature is disabled statically.  To enable it,  OpenSSL  must  be  built
           with tracing support, which may be configured like this: "./config enable-trace"

           Unless  OpenSSL  tracing  support  is  generally  disabled,  enable trace output of specific parts of
           OpenSSL libraries, by name.  This output usually makes sense only if you know OpenSSL internals well.

           The value of this environment varialble is a  comma-separated  list  of  names,  with  the  following
           available:

           TRACE
               Traces the OpenSSL trace API itself.

           INIT
               Traces OpenSSL library initialization and cleanup.

           TLS Traces the TLS/SSL protocol.

           TLS_CIPHER
               Traces the ciphers used by the TLS/SSL protocol.

           CONF
               Show details about provider and engine configuration.

           ENGINE_TABLE
               The function that is used by RSA, DSA (etc) code to select registered ENGINEs, cache defaults and
               functional references (etc), will generate debugging summaries.

           ENGINE_REF_COUNT
               Reference  counts  in  the  ENGINE  structure will be monitored with a line of generated for each
               change.

           PKCS5V2
               Traces PKCS#5 v2 key generation.

           PKCS12_KEYGEN
               Traces PKCS#12 key generation.

           PKCS12_DECRYPT
               Traces PKCS#12 decryption.

           X509V3_POLICY
               Generates the complete policy tree at various points during X.509 v3 policy evaluation.

           BN_CTX
               Traces BIGNUM context operations.

           CMP Traces CMP client and server activity.

           STORE
               Traces STORE operations.

           DECODER
               Traces decoder operations.

           ENCODER
               Traces encoder operations.

           REF_COUNT
               Traces decrementing certain ASN.1 structure references.

           HTTP
               Traces the HTTP client and server, such as messages being sent and received.

       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_riscvcap
           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) and OPENSSL_riscvcap(3).

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

       QLOGDIR
           Specifies a QUIC qlog output directory. See openssl-qlog(7).

       OSSL_QFILTER
           Used to set a QUIC qlog filter specification. See openssl-qlog(7).

COPYRIGHT

       Copyright 2019-2024 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>.

3.4.1                                              2025-04-03                                  OPENSSL-ENV(7SSL)