=head1 DESCRIPTION
-The OpenSSL CONF library can be used to read configuration files.
-It is used for the OpenSSL master configuration file B<openssl.cnf>
-and in a few other places like B<SPKAC> files and certificate extension
-files for the B<x509> utility. OpenSSL applications can also use the
-CONF library for their own purposes.
-
-A configuration file is divided into a number of sections. Each section
-starts with a line C<[section_name]> and ends when a new section is
-started or end of file is reached. A section name can consist of
-alphanumeric characters and underscores. The brackets are required.
-
-The first section of a configuration file is special and is referred
-to as the B<default> section. This section is usually unnamed and spans from the
-start of file until the first named section. When a name is being looked up
-it is first looked up in a named section (if any) and then the
-default section.
+This page documents the syntax of OpenSSL configuration files,
+as parsed by L<NCONF_load(3)> and related functions.
+This format is used by many of the OpenSSL commands, and to
+initialize the libraries when used by any application.
-The environment is mapped onto a section called B<ENV>.
+The first part describes the general syntax of the configuration
+files, and subsequent sections describe the semantics of individual
+modules. Other modules are described in L<fips_config(5)> and
+L<x509v3_config(5)>.
+The syntax for defining ASN.1 values is described in
+L<ASN1_generate_nconf(3)>.
-Comments can be included by preceding them with the B<#> character
-
-Other files can be included using the B<.include> directive followed
-by a path. If the path points to a directory all files with
-names ending with B<.cnf> or B<.conf> are included from the directory.
-Recursive inclusion of directories from files in such directory is not
-supported. That means the files in the included directory can also contain
-B<.include> directives but only inclusion of regular files is supported
-there. The inclusion of directories is not supported on systems without
-POSIX IO support.
-
-It is strongly recommended to use absolute paths with the B<.include>
-directive. Relative paths are evaluated based on the application current
-working directory so unless the configuration file containing the
-B<.include> directive is application specific the inclusion will not
-work as expected. The environment variable B<OPENSSL_CONF_INCLUDE> can also be
-used to specify the path to prepend to all .include paths.
-
-There can be optional B<=> character and whitespace characters between
-B<.include> directive and the path which can be useful in cases the
-configuration file needs to be loaded by old OpenSSL versions which do
-not support the B<.include> syntax. They would bail out with error
-if the B<=> character is not present but with it they just ignore
-the include.
-
-Pragmas can be specified with the B<.pragma> directive.
-See L</PRAGMAS> for more information.
-
-Each section in a configuration file consists of a number of name and
-value pairs of the form B<name=value>
-
-The B<name> string can contain any alphanumeric characters as well as
-a few punctuation symbols such as B<.> B<,> B<;> and B<_>.
-
-The B<value> string consists of the string following the B<=> character
-until end of line with any leading and trailing white space removed.
-
-The value string undergoes variable expansion. This can be done by
-including the form B<$var> or B<${var}>: this will substitute the value
-of the named variable in the current section. It is also possible to
-substitute a value from another section using the syntax B<$section::name>
-or B<${section::name}>. By using the form B<$ENV::name> environment
-variables can be substituted. It is also possible to assign values to
-environment variables by using the name B<ENV::name>, this will work
-if the program looks up environment variables using the B<CONF> library
-instead of calling getenv() directly. The value string must not exceed 64k in
-length after variable expansion. Otherwise an error will occur.
-
-It is possible to escape certain characters by using any kind of quote
-or the B<\> character. By making the last character of a line a B<\>
-a B<value> string can be spread across multiple lines. In addition
-the sequences B<\n>, B<\r>, B<\b> and B<\t> are recognized.
+=head1 SYNTAX
-All expansion and escape rules as described above that apply to B<value>
-also apply to the path of the B<.include> directive.
+A configuration file is a series of lines. Blank lines, and whitespace
+between the elements of a line, have no significance. A comment starts
+with a B<#> character; the rest of the line is ignored. If the B<#>
+is the first non-space character in a line, the entire line is ignored.
-=head1 PRAGMAS
+=head2 Directives
-Pragmas can be used to change the behavior of the configuration file
-parser, among others. Currently supported pragmas are:
+Two directives can be used to control the parsing of configuration files:
+B<.include> and B<.pragma>.
-=over 4
+For compatibility with older versions of OpenSSL, an equal sign after the
+directive will be ignored. Older versions will treat it as an assignment,
+so care should be taken if the difference in semantics is important.
-=item B<.pragma> B<dollarid>:I<value>
-
-I<value> can be one of:
-
-=over 4
+A file can include other files using the include syntax:
-=item B<"on"> or B<"true">
+ .include [=] pathname
-this signifies that dollar signs are considered an identity character
-from this point on and that variable expansion requires the use of
-braces or parentheses. In other words, C<foo$bar> will be considered
-a name instead of C<foo> followed by the expansion of the variable
-C<bar>.
-This is suitable for platforms where the dollar sign is commonly used
-as part of names.
+If B<pathname> is a simple filename, that file is included directly at
+that point. Included files can have B<.include> statements that specify
+other files. If B<pathname> is a directory, all files within that directory
+that have a C<.cnf> or C<.conf> extension will be included. (This is only
+available on systems with POSIX IO support.) Any sub-directories found
+inside the B<pathname> are B<ignored>. Similarly, if a file is opened
+while scanning a directory, and that file has an B<.include> directive
+that specifies a directory, that is also ignored.
-=item B<"off"> or B<"false">
+As a general rule, the B<pathname> should be an absolute path. Relative
+paths are evaluated based on the current working directory, so unless the
+file with the B<.include> directive is application-specific, the inclusion
+will not work as expected. The environment variable B<OPENSSL_CONF_INCLUDE>,
+if it exists, will be prepended to all B<.include> B<pathname>'s.
-Turns this pragma off, i.e. C<foo$bar> will be interpreted as C<foo>
-followed by the expansion of the variable C<bar>.
+In these files, the dollar sign, B<$>, is used to reference a variable, as
+described below. On some platforms, however, it is common to treat B<$>
+as a regular character in symbol names. Supporting this behavior can be
+done with the following directive:
-=back
-
-By default, this pragma is turned off.
-
-=back
-
-=head1 OPENSSL LIBRARY CONFIGURATION
+ .pragma [=] dollarid:value
-Applications can automatically configure certain
-aspects of OpenSSL using the master OpenSSL configuration file, or optionally
-an alternative configuration file. The B<openssl> utility includes this
-functionality: any sub command uses the master OpenSSL configuration file
-unless an option is used in the sub command to use an alternative configuration
-file.
-
-To enable library configuration the default section needs to contain an
-appropriate line which points to the main configuration section. The default
-name is B<openssl_conf> which is used by the B<openssl> utility. Other
-applications may use an alternative name such as B<myapplication_conf>.
-All library configuration lines appear in the default section at the start
-of the configuration file.
-
-The configuration section should consist of a set of name value pairs which
-contain specific module configuration information. The B<name> represents
-the name of the I<configuration module>. The meaning of the B<value> is
-module specific: it may, for example, represent a further configuration
-section containing configuration module specific information. E.g.:
+Where B<value> is one of the following:
- # This must be in the default section
- openssl_conf = openssl_init
-
- [openssl_init]
-
- oid_section = new_oids
- engines = engine_section
- providers = provider_section
-
- [new_oids]
-
- ... new oids here ...
-
- [engine_section]
-
- ... engine stuff here ...
+=over 4
- [provider_section]
+=item B<off> or B<false>
- ... provider stuff here ...
+This is the default behavior. For example, C<foo$bar> is interpreted as
+C<foo> followed by the expansion of the variable C<bar>.
-The features of each configuration module are described below.
+=item B<on> or B<true>
-=head2 ASN1 Object Configuration Module
+This specifies that dollar signs are part of the symbol name and
+variable expansions must be specified using braces or parentheses.
+For example, C<foo$bar> is treated as a single seven-character name.
-This module has the name B<oid_section>. The value of this variable points
-to a section containing name value pairs of OIDs: the name is the OID short
-and long name, the value is the numerical form of the OID. Although some of
-the B<openssl> utility sub commands already have their own ASN1 OBJECT section
-functionality not all do. By using the ASN1 OBJECT configuration module
-B<all> the B<openssl> utility sub commands can see the new objects as well
-as any compliant applications. For example:
-
- [new_oids]
+=back
- some_new_oid = 1.2.3.4
- some_other_oid = 1.2.3.5
+=head2 Settings
-It is also possible to set the value to the long name followed
-by a comma and the numerical OID form. For example:
+A configuration file is divided into a number of I<sections>. A section
+begins with the section name in square brackets, and ends when a new
+section starts, or at the end of the file. The section name can consist
+of alphanumeric characters and underscores.
+Whitespace between the name and the brackets is removed.
- shortName = some object long name, 1.2.3.4
+The first section of a configuration file is special and is referred to
+as the B<default> section. This section is usually unnamed and spans from
+the start of file until the first named section. When a name is being
+looked up, it is first looked up in the current or named section,
+and then the default section if necessary.
-=head2 Engine Configuration Module
+The environment is mapped onto a section called B<ENV>.
-This ENGINE configuration module has the name B<engines>. The value of this
-variable points to a section containing further ENGINE configuration
-information.
+Within a section are a series of name/value assignments, described in more
+detail below. As a reminder, the square brackets shown in this example
+are required, not optional:
+
+ [ section ]
+ name1 = This is value1
+ name2 = Another value
+ ...
+ [ newsection ]
+ name1 = New value1
+ name3 = Value 3
+
+The B<name> can contain any alphanumeric characters as well as a few
+punctuation symbols such as B<.> B<,> B<;> and B<_>.
+Whitespace after the name and before the equal sign is ignored.
+
+If a name is repeated in the same section, then all but the last
+value are ignored. In certain circumstances, such as with
+Certificate DNs, the same field may occur multiple times.
+In order to support this, commands like L<openssl-req(1)> ignore any
+leading text that is preceeded with a period. For example:
+
+ 1.OU = First OU
+ 2.OU = Second OU
+
+The B<value> consists of the string following the B<=> character until end
+of line with any leading and trailing white space removed.
+
+The value string undergoes variable expansion. The text C<$var> or C<${var}>
+inserts the value of the named variable from the current section.
+To use a value from another section use C<$section::name>
+or C<${section::name}>.
+By using C<$ENV::name>, the value of the specified environment
+variable will be substituted.
+
+Variables must be defined before their value is referenced, otherwise
+an error is flagged and the file will not load.
+This can be worked around by specifying a default value in the B<default>
+section before the variable is used.
+
+Any name/value settings in an B<ENV> section are available
+to the configuration file, but are not propagated to the environment.
+
+It is an error if the value ends up longer than 64k.
+
+It is possible to escape certain characters by using a single B<'> or
+double B<"> quote around the value, or using a backslash B<\> before the
+character,
+By making the last character of a line a B<\>
+a B<value> string can be spread across multiple lines. In addition
+the sequences B<\n>, B<\r>, B<\b> and B<\t> are recognized.
-The section pointed to by B<engines> is a table of engine names (though see
-B<engine_id> below) and further sections containing configuration information
-specific to each ENGINE.
+The expansion and escape rules as described above that apply to B<value>
+also apply to the pathname of the B<.include> directive.
-Each ENGINE specific section is used to set default algorithms, load
-dynamic, perform initialization and send ctrls. The actual operation performed
-depends on the I<command> name which is the name of the name value pair. The
-currently supported commands are listed below.
+=head1 OPENSSL LIBRARY CONFIGURATION
-For example:
+The sections below use the informal term I<module> to refer to a part
+of the OpenSSL functionality. This is not the same as the formal term
+I<FIPS module>, for example.
- [engine_section]
+The OpenSSL configuration looks up the value of B<openssl_conf>
+in the default section and takes that as the name of a section that specifies
+how to configure any modules in the library. It is not an error to leave
+any module in its default configuration. An application can specify a
+different name by calling CONF_modules_load_file(), for example, directly.
- # Configure ENGINE named "foo"
- foo = foo_section
- # Configure ENGINE named "bar"
- bar = bar_section
+ # This must be in the default section
+ openssl_conf = openssl_init
- [foo_section]
- ... foo ENGINE specific commands ...
+ [openssl_init]
+ oid_section = oids
+ providers = providers
+ alg_section = evp_properties
+ ssl_conf = ssl_configuration
+ engines = engines
- [bar_section]
- ... "bar" ENGINE specific commands ...
+ [oids]
+ ... new oids here ...
-The command B<engine_id> is used to give the ENGINE name. If used this
-command must be first. For example:
+ [providers]
+ ... provider stuff here ...
- [engine_section]
- # This would normally handle an ENGINE named "foo"
- foo = foo_section
+ [evp_properties]
+ ... EVP properties here ...
- [foo_section]
- # Override default name and use "myfoo" instead.
- engine_id = myfoo
+ [ssl_configuration]
+ ... SSL/TLS configuration properties here ...
-The command B<dynamic_path> loads and adds an ENGINE from the given path. It
-is equivalent to sending the ctrls B<SO_PATH> with the path argument followed
-by B<LIST_ADD> with value 2 and B<LOAD> to the dynamic ENGINE. If this is
-not the required behaviour then alternative ctrls can be sent directly
-to the dynamic ENGINE using ctrl commands.
+ [engines]
+ ... engine properties here ...
-The command B<init> determines whether to initialize the ENGINE. If the value
-is B<0> the ENGINE will not be initialized, if B<1> and attempt it made to
-initialized the ENGINE immediately. If the B<init> command is not present
-then an attempt will be made to initialize the ENGINE after all commands in
-its section have been processed.
+The semantics of each module are described below. The phrase "in the
+initialization section" refers to the section identified by the
+B<openssl_conf> or other name (given as B<openssl_init> in the
+example above). The examples below assume the configuration above
+is used to specify the individual sections.
-The command B<default_algorithms> sets the default algorithms an ENGINE will
-supply using the functions ENGINE_set_default_string().
+=head2 ASN.1 Object Identifier Configuration
-If the name matches none of the above command names it is assumed to be a
-ctrl command which is sent to the ENGINE. The value of the command is the
-argument to the ctrl command. If the value is the string B<EMPTY> then no
-value is sent to the command.
+The name B<oid_section> in the initialization section names the section
+containing name/value pairs of OID's.
+The name is the short name; the value is an optional long name followed
+by a comma, and the numeric value.
+While some OpenSSL commands have their own section for specifying OID's,
+this section makes them avilable to all commands and applications.
-For example:
+ [oids]
+ shortName = a very long OID name, 1.2.3.4
+ newoid1 = 1.2.3.4.1
+ some_other_oid = 1.2.3.5
+If a full configuration with the above fragment is in the file
+F<example.cnf>, then the following command line:
- [engine_section]
+ OPENSSL_CONF=example.cnf openssl asn1parse -genstr OID:1.2.3.4.1
- # Configure ENGINE named "foo"
- foo = foo_section
+will output:
- [foo_section]
- # Load engine from DSO
- dynamic_path = /some/path/fooengine.so
- # A foo specific ctrl.
- some_ctrl = some_value
- # Another ctrl that doesn't take a value.
- other_ctrl = EMPTY
- # Supply all default algorithms
- default_algorithms = ALL
+ 0:d=0 hl=2 l= 4 prim: OBJECT :newoid1
-=head2 Provider Configuration Module
+showing that the OID "newoid1" has been added as "1.2.3.4.1".
-This provider configuration module has the name B<providers>. The
-value of this variable points to a section containing further provider
-configuration information.
+=head2 Provider Configuration
-The section pointed to by B<providers> is a table of provider names
-(though see B<identity> below) and further sections containing
-configuration information specific to each provider module.
+The name B<providers> in the initialization section names the section
+containing cryptographic provider configuration. The name/value assignments
+in this section each name a provider, and point to the configuration section
+for that provider. The provider-specific section is used to specify how
+to load the module, activate it, and set other parameters.
-Each provider specific section is used to load its module, perform
-activation and set parameters to pass to the provider on demand. The
-actual operation performed depends on the name of the name value pair.
-The currently supported commands are listed below.
+Within a provider section, the following names have meaning:
-For example:
+=over 4
- [provider_section]
+=item B<identity>
- # Configure provider named "foo"
- foo = foo_section
- # Configure provider named "bar"
- bar = bar_section
+This is used to specify an alternate name, overriding the default name
+specified in the list of providers. For example:
- [foo_section]
- ... "foo" provider specific parameters ...
+ [providers]
+ foo = foo_provider
- [bar_section]
- ... "bar" provider specific parameters ...
+ [foo_provider]
+ identity = my_fips_module
-The command B<identity> is used to give the provider name. For example:
+=item B<module>
- [provider_section]
- # This would normally handle a provider named "foo"
- foo = foo_section
+Specifies the pathname of the module (typically a shared library) to load.
- [foo_section]
- # Override default name and use "myfoo" instead.
- identity = myfoo
+=item B<activate>
-The parameter B<module> loads and adds a provider module from the
-given module path. That path may be a simple filename, a relative
-path or an absolute path.
+If present, the module is activated. The value assigned to this name is not
+significant.
-The parameter B<activate> determines whether to activate the
-provider. The value has no importance, the presence of the parameter
-is enough for activation to take place.
+=back
All parameters in the section as well as sub-sections are made
available to the provider.
-=head2 EVP Configuration Module
+=head2 EVP Configuration
-This module has the name B<alg_section> which points to a section containing
-algorithm commands.
+The name B<alg_section> in the initialization section names the section
+containing algorithmic properties when using the B<EVP> API.
-The supported algorithm commands are:
+Within the algorithm properties section, the following names have meaning:
=over 4
The value is a boolean that can be B<yes> or B<no>. If the value is
B<yes>, this is exactly equivalent to:
- default_properties = fips=yes
+ default_properties = fips=yes
-If the value is B<no>, nothing happens.
+If the value is B<no>, nothing happens. Using this name is deprecated, and
+if used, it must be the only name in the section.
=back
-These two commands should not be used together, as there is no control
-over how they affect each other.
-The use of B<fips_mode> is strongly discouraged and is only present
-for backward compatibility with earlier OpenSSL FIPS modules.
+=head2 SSL Configuration
-=head2 SSL Configuration Module
+The name B<ssl_conf> in the initialization section names the section
+containing the list of SSL/TLS configurations.
+As with the providers, each name in this section identifies a
+section with the configuration for that name. For example:
-This module has the name B<ssl_conf> which points to a section containing
-SSL configurations.
+ [ssl_configuration]
+ server = server_tls_config
+ client = client_tls_config
+ system_default = tls_system_default
-Each line in the SSL configuration section contains the name of the
-configuration and the section containing it.
+ [server_tls_config]
+ ... configuration for SSL/TLS servers ...
-Each configuration section consists of command value pairs for B<SSL_CONF>.
-Each pair will be passed to a B<SSL_CTX> or B<SSL> structure if it calls
-SSL_CTX_config() or SSL_config() with the appropriate configuration name.
+ [client_tls_config]
+ ... configuration for SSL/TLS clients ...
-Note: any characters before an initial dot in the configuration section are
-ignored so the same command can be used multiple times.
+The configuration name B<system_default> has a special meaning. If it
+exists, it is applied whenever an B<SSL_CTX> object is created. For example,
+to impose a system-wide minimum on protocol version:
-For example:
+ [tls_system_default]
+ MinProtocol = TLSv1.2
+
+Each configuration section consists of name/value pairs that are parsed
+by B<SSL_CONF_cmd(3)>, which will be called by SSL_CTX_config() or
+SSL_config(), appropriately. Note that any characters before an initial
+dot in the configuration section are ignored, so that the same command can
+be used multiple times. This probably is most useful for loading different
+key types, as shown here:
- ssl_conf = ssl_sect
+ [server_tls_config]
+ RSA.Certificate = server-rsa.pem
+ ECDSA.Certificate = server-ecdsa.pem
- [ssl_sect]
+=head2 Engine Configuration
- server = server_section
+The name B<engines> in the initialization section names the section
+containing the list of ENGINE configurations.
+As with the providers, each name in this section identifies an engine
+with the configuration for that engine.
+The engine-specific section is used to specify how to load the engine,
+activate it, and set other parameters.
- [server_section]
+Within an engine section, the following names have meaning:
- RSA.Certificate = server-rsa.pem
- ECDSA.Certificate = server-ecdsa.pem
- Ciphers = ALL:!RC4
+=over 4
+
+=item B<engine_id>
-The system default configuration with name B<system_default> if present will
-be applied during any creation of the B<SSL_CTX> structure.
+This is used to specify an alternate name, overriding the default name
+specified in the list of engines. If present, it must be first.
+For example:
-Example of a configuration with the system default:
+ [engines]
+ foo = foo_engine
- ssl_conf = ssl_sect
+ [foo_engine]
+ engine_id = myfoo
- [ssl_sect]
+=item B<dynamic_path>
- system_default = system_default_sect
+This loads and adds an ENGINE from the given path. It is equivalent to
+sending the ctrls B<SO_PATH> with the path argument followed by B<LIST_ADD>
+with value B<2> and B<LOAD> to the dynamic ENGINE. If this is not the
+required behaviour then alternative ctrls can be sent directly to the
+dynamic ENGINE using ctrl commands.
- [system_default_sect]
+=item B<init>
- MinProtocol = TLSv1.2
+This specifies whether to initialize the ENGINE. If the value is B<0> the
+ENGINE will not be initialized, if the value is B<1> an attempt is made
+to initialize
+the ENGINE immediately. If the B<init> command is not present then an
+attempt will be made to initialize the ENGINE after all commands in its
+section have been processed.
+=item B<default_algorithms>
-=head1 NOTES
+This sets the default algorithms an ENGINE will supply using the function
+ENGINE_set_default_string().
-If a configuration file attempts to expand a variable that doesn't exist
-then an error is flagged and the file will not load. This can happen
-if an attempt is made to expand an environment variable that doesn't
-exist. For example in a previous version of OpenSSL the default OpenSSL
-master configuration file used the value of B<HOME> which may not be
-defined on non Unix systems and would cause an error.
+=back
-This can be worked around by including a B<default> section to provide
-a default value: then if the environment lookup fails the default value
-will be used instead. For this to work properly the default value must
-be defined earlier in the configuration file than the expansion. See
-the B<EXAMPLES> section for an example of how to do this.
+All other names are taken to be the name of a ctrl command that is
+sent to the ENGINE, and the value is the argument passed with the command.
+The special value B<EMPTY> means no value is sent with the command.
+For example:
-If the same variable exists in the same section then all but the last
-value will be silently ignored. In certain circumstances such as with
-DNs the same field may occur multiple times. This is usually worked
-around by ignoring any characters before an initial B<.> e.g.
+ [engines]
+ foo = foo_engine
- 1.OU="My first OU"
- 2.OU="My Second OU"
+ [foo_engine]
+ dynamic_path = /some/path/fooengine.so
+ some_ctrl = some_value
+ default_algorithms = ALL
+ other_ctrl = EMPTY
=head1 EXAMPLES
-Here is a sample configuration file using some of the features
-mentioned above.
+This example shows how to use quoting and escaping.
# This is the default section.
-
- HOME=/temp
- configdir=$ENV::HOME/config
+ HOME = /temp
+ configdir = $ENV::HOME/config
[ section_one ]
-
- # We are now in section one.
-
# Quotes permit leading and trailing whitespace
any = " any variable name "
-
other = A string that can \
cover several lines \
by including \\ characters
-
message = Hello World\n
[ section_two ]
-
greeting = $section_one::message
-This next example shows how to expand environment variables safely.
-
-Suppose you want a variable called B<tmpfile> to refer to a
-temporary filename. The directory it is placed in can determined by
-the B<TEMP> or B<TMP> environment variables but they may not be
-set to any value at all. If you just include the environment variable
-names and the variable doesn't exist then this will cause an error when
-an attempt is made to load the configuration file. By making use of the
-default section both values can be looked up with B<TEMP> taking
-priority and B</tmp> used if neither is defined:
-
- TMP=/tmp
- # The above value is used if TMP isn't in the environment
- TEMP=$ENV::TMP
- # The above value is used if TEMP isn't in the environment
- tmpfile=${ENV::TEMP}/tmp.filename
-
-Simple OpenSSL library configuration example to enter FIPS mode:
-
- # Default appname: should match "appname" parameter (if any)
- # supplied to CONF_modules_load_file_with_libctx et al.
- openssl_conf = openssl_conf_section
-
- [openssl_conf_section]
- # Configuration module list
- alg_section = evp_sect
-
- [evp_sect]
- # Set to "yes" to enter FIPS mode if supported
- fips_mode = yes
-
-Note: in the above example you will get an error in non FIPS capable versions
-of OpenSSL.
-
-Simple OpenSSL library configuration to make TLS 1.3 the system-default
-minimum TLS version:
-
- # Toplevel section for openssl (including libssl)
- openssl_conf = default_conf_section
+This example shows how to expand environment variables safely.
+In this example, the variable B<tempfile> is intended to refer
+to a temporary file, and the environment variable B<TEMP> or
+B<TMP>, if present, specify the directory where the file
+should be put.
+Since the default section is checked if a variable does not
+exist, it is possible to set B<TMP> to default to F</tmp>, and
+B<TEMP> to default to B<TMP>.
- [default_conf_section]
- # We only specify configuration for the "ssl module"
- ssl_conf = ssl_section
+ # These two lines must be in the default section.
+ TMP = /tmp
+ TEMP = $ENV::TMP
- [ssl_section]
- system_default = system_default_section
+ # This can be used anywhere
+ tmpfile = ${ENV::TEMP}/tmp.filename
- [system_default_section]
- MinProtocol = TLSv1.3
+This example shows how to enforce FIPS mode for the application
+F<sample>.
-More complex OpenSSL library configuration. Add OID and don't enter FIPS mode:
+ sample = fips_config
- # Default appname: should match "appname" parameter (if any)
- # supplied to CONF_modules_load_file_with_libctx et al.
- openssl_conf = openssl_conf_section
+ [fips_config]
+ alg_section = evp_properties
- [openssl_conf_section]
- # Configuration module list
- alg_section = evp_sect
- oid_section = new_oids
-
- [evp_sect]
- # This will have no effect as FIPS mode is off by default.
- # Set to "yes" to enter FIPS mode, if supported
- fips_mode = no
-
- [new_oids]
- # New OID, just short name
- newoid1 = 1.2.3.4.1
- # New OID shortname and long name
- newoid2 = New OID 2 long name, 1.2.3.4.2
-
-The above examples can be used with any application supporting library
-configuration if "openssl_conf" is modified to match the appropriate "appname".
-
-For example if the second sample file above is saved to "example.cnf" then
-the command line:
-
- OPENSSL_CONF=example.cnf openssl asn1parse -genstr OID:1.2.3.4.1
-
-will output:
-
- 0:d=0 hl=2 l= 4 prim: OBJECT :newoid1
-
-showing that the OID "newoid1" has been added as "1.2.3.4.1".
+ [evp_properties]
+ default_properties = "fips=yes"
=head1 ENVIRONMENT
=item B<OPENSSL_CONF_INCLUDE>
-The optional path to prepend to all .include paths.
+The optional path to prepend to all B<.include> paths.
=back
=head1 BUGS
-Currently there is no way to include characters using the octal B<\nnn>
-form. Strings are all null terminated so nulls cannot form part of
-the value.
+There is no way to include characters using the octal B<\nnn> form. Strings
+are all null terminated so nulls cannot form part of the value.
The escaping isn't quite right: if you want to use sequences like B<\n>
you can't use any quote escaping on the same line.
-Files are loaded in a single pass. This means that an variable expansion
-will only work if the variables referenced are defined earlier in the
-file.
+The limit that only one directory can be opened and read at a time
+can be considered a bug and should be fixed.
=head1 HISTORY
=head1 SEE ALSO
-L<openssl-x509(1)>, L<openssl-req(1)>, L<openssl-ca(1)>, L<fips_config(5)>
+L<openssl-x509(1)>, L<openssl-req(1)>, L<openssl-ca(1)>,
+L<ASN1_generate_nconf(3)>,
+L<EVP_set_default_properties(3)>,
+L<CONF_modules_load_file(3)>,
+L<fips_config(5)>, and
+L<x509v3_config(5)>.
=head1 COPYRIGHT
projects / oweals / openssl.git / commitdiff