=head1 NAME
-req - PKCS#10 certificate and certificate generating utility.
+req - PKCS#10 certificate request and certificate generating utility.
=head1 SYNOPSIS
[B<-out filename>]
[B<-passout arg>]
[B<-text>]
+[B<-pubkey>]
[B<-noout>]
[B<-verify>]
[B<-modulus>]
[B<-new>]
[B<-rand file(s)>]
[B<-newkey rsa:bits>]
-[B<-newkey dsa:file>]
+[B<-newkey alg:file>]
[B<-nodes>]
[B<-key filename>]
[B<-keyform PEM|DER>]
[B<-keyout filename>]
-[B<-[md5|sha1|md2|mdc2]>]
+[B<-keygen_engine id>]
+[B<-[digest]>]
[B<-config filename>]
-[B<-subj arg>]
+[B<-multivalue-rdn>]
[B<-x509>]
[B<-days n>]
+[B<-set_serial n>]
[B<-asn1-kludge>]
+[B<-no-asn1-kludge>]
[B<-newhdr>]
[B<-extensions section>]
[B<-reqexts section>]
+[B<-utf8>]
+[B<-nameopt>]
+[B<-reqopt>]
+[B<-subject>]
+[B<-subj arg>]
[B<-batch>]
[B<-verbose>]
+[B<-engine id>]
=head1 DESCRIPTION
=item B<-passin arg>
the input file password source. For more information about the format of B<arg>
-see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)|openssl(1)>.
+see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
=item B<-out filename>
=item B<-passout arg>
the output file password source. For more information about the format of B<arg>
-see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)|openssl(1)>.
+see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
=item B<-text>
prints out the certificate request in text form.
+=item B<-subject>
+
+prints out the request subject (or certificate subject if B<-x509> is
+specified)
+
+=item B<-pubkey>
+
+outputs the public key.
+
=item B<-noout>
this option prevents output of the encoded version of the request.
=item B<-rand file(s)>
a file or files containing random data used to seed the random number
-generator, or an EGD socket (see L<RAND_egd(3)|RAND_egd(3)>).
+generator, or an EGD socket (see L<RAND_egd(3)>).
Multiple files can be specified separated by a OS-dependent character.
The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
all others.
=item B<-newkey arg>
this option creates a new certificate request and a new private
-key. The argument takes one of two forms. B<rsa:nbits>, where
+key. The argument takes one of several forms. B<rsa:nbits>, where
B<nbits> is the number of bits, generates an RSA key B<nbits>
-in size. B<dsa:filename> generates a DSA key using the parameters
-in the file B<filename>.
+in size. If B<nbits> is omitted, i.e. B<-newkey rsa> specified,
+the default key size, specified in the configuration file is used.
+
+All other algorithms support the B<-newkey alg:file> form, where file may be
+an algorithm parameter file, created by the B<genpkey -genparam> command
+or and X.509 certificate for a key with appropriate algorithm.
+
+B<param:file> generates a key using the parameter file or certificate B<file>,
+the algorithm is determined by the parameters. B<algname:file> use algorithm
+B<algname> and parameter file B<file>: the two algorithms must match or an
+error occurs. B<algname> just uses algorithm B<algname>, and parameters,
+if necessary should be specified via B<-pkeyopt> parameter.
+
+B<dsa:filename> generates a DSA key using the parameters
+in the file B<filename>. B<ec:filename> generates EC key (usable both with
+ECDSA or ECDH algorithms), B<gost2001:filename> generates GOST R
+34.10-2001 key (requires B<ccgost> engine configured in the configuration
+file). If just B<gost2001> is specified a parameter set should be
+specified by B<-pkeyopt paramset:X>
+
+
+=item B<-pkeyopt opt:value>
+
+set the public key algorithm option B<opt> to B<value>. The precise set of
+options supported depends on the public key algorithm used and its
+implementation. See B<KEY GENERATION OPTIONS> in the B<genpkey> manual page
+for more details.
=item B<-key filename>
if this option is specified then if a private key is created it
will not be encrypted.
-=item B<-[md5|sha1|md2|mdc2]>
+=item B<-[digest]>
-this specifies the message digest to sign the request with. This
-overrides the digest algorithm specified in the configuration file.
-This option is ignored for DSA requests: they always use SHA1.
+this specifies the message digest to sign the request.
+Any digest supported by the OpenSSL B<dgst> command can be used.
+This overrides the digest algorithm specified in
+the configuration file.
+
+Some public key algorithms may override this choice. For instance, DSA
+signatures always use SHA1, GOST R 34.10 signatures always use
+GOST R 34.11-94 (B<-md_gost94>).
=item B<-config filename>
sets subject name for new request or supersedes the subject name
when processing a request.
+The arg must be formatted as I</type0=value0/type1=value1/type2=...>,
+characters may be escaped by \ (backslash), no spaces are skipped.
+
+=item B<-multivalue-rdn>
+
+this option causes the -subj argument to be interpreted with full
+support for multivalued RDNs. Example:
+
+I</DC=org/DC=OpenSSL/DC=users/UID=123456+CN=John Doe>
+
+If -multi-rdn is not used then the UID value is I<123456+CN=John Doe>.
=item B<-x509>
this option outputs a self signed certificate instead of a certificate
request. This is typically used to generate a test certificate or
a self signed root CA. The extensions added to the certificate
-(if any) are specified in the configuration file.
+(if any) are specified in the configuration file. Unless specified
+using the B<set_serial> option, a large random number will be used for
+the serial number.
=item B<-days n>
when the B<-x509> option is being used this specifies the number of
days to certify the certificate for. The default is 30 days.
+=item B<-set_serial n>
+
+serial number to use when outputting a self signed certificate. This
+may be specified as a decimal value or a hex value if preceded by B<0x>.
+It is possible to use negative serial numbers but this is not recommended.
+
=item B<-extensions section>
=item B<-reqexts section>
be used in the same configuration file to specify requests for
a variety of purposes.
+=item B<-utf8>
+
+this option causes field values to be interpreted as UTF8 strings, by
+default they are interpreted as ASCII. This means that the field
+values, whether prompted from a terminal or obtained from a
+configuration file, must be valid UTF8 strings.
+
+=item B<-nameopt option>
+
+option which determines how the subject or issuer names are displayed. The
+B<option> argument can be a single option or multiple options separated by
+commas. Alternatively the B<-nameopt> switch may be used more than once to
+set multiple options. See the L<x509(1)> manual page for details.
+
+=item B<-reqopt>
+
+customise the output format used with B<-text>. The B<option> argument can be
+a single option or multiple options separated by commas.
+
+See discussion of the B<-certopt> parameter in the L<x509(1)>
+command.
+
+
=item B<-asn1-kludge>
by default the B<req> command outputs certificate requests containing
It should be noted that very few CAs still require the use of this option.
+=item B<-no-asn1-kludge>
+
+Reverses effect of B<-asn1-kludge>
+
=item B<-newhdr>
-Adds the word B<NEW> to the PEM file header and footer lines on the outputed
+Adds the word B<NEW> to the PEM file header and footer lines on the outputted
request. Some software (Netscape certificate server) and some CAs need this.
=item B<-batch>
print extra details about the operations being performed.
+=item B<-engine id>
+
+specifying an engine (by its unique B<id> string) will cause B<req>
+to attempt to obtain a functional reference to the specified engine,
+thus initialising it if needed. The engine will then be set as the default
+for all available algorithms.
+
+=item B<-keygen_engine id>
+
+specifies an engine (by its unique B<id> string) which would be used
+for key generation operations.
+
=back
=head1 CONFIGURATION FILE FORMAT
=item B<RANDFILE>
This specifies a filename in which random number seed information is
-placed and read from, or an EGD socket (see L<RAND_egd(3)|RAND_egd(3)>).
+placed and read from, or an EGD socket (see L<RAND_egd(3)>).
It is used for private key generation.
=item B<encrypt_key>
=item B<default_md>
-This option specifies the digest algorithm to use. Possible values
-include B<md5 sha1 mdc2>. If not present then MD5 is used. This
-option can be overridden on the command line.
+This option specifies the digest algorithm to use.
+Any digest supported by the OpenSSL B<dgst> command can be used.
+If not present then MD5 is used.
+This option can be overridden on the command line.
=item B<string_mask>
this specifies the configuration file section containing a list of
extensions to add to the certificate request. It can be overridden
-by the B<-reqexts> command line switch.
+by the B<-reqexts> command line switch. See the
+L<x509v3_config(5)> manual page for details of the
+extension section format.
=item B<x509_extensions>
and just takes values from the config file directly. It also changes the
expected format of the B<distinguished_name> and B<attributes> sections.
+=item B<utf8>
+
+if set to the value B<yes> then field values to be interpreted as UTF8
+strings, by default they are interpreted as ASCII. This means that
+the field values, whether prompted from a terminal or obtained from a
+configuration file, must be valid UTF8 strings.
+
=item B<attributes>
this specifies the section containing any request attributes: its format
The actual permitted field names are any object identifier short or
long names. These are compiled into OpenSSL and include the usual
values such as commonName, countryName, localityName, organizationName,
-organizationUnitName, stateOrPrivinceName. Additionally emailAddress
+organizationalUnitName, stateOrProvinceName. Additionally emailAddress
is include as well as name, surname, givenName initials and dnQualifier.
Additional object identifiers can be defined with the B<oid_file> or
Create a private key and then generate a certificate request from it:
- openssl genrsa -out key.pem 1024
+ openssl genrsa -out key.pem 2048
openssl req -new -key key.pem -out req.pem
The same but just using req:
- openssl req -newkey rsa:1024 -keyout key.pem -out req.pem
+ openssl req -newkey rsa:2048 -keyout key.pem -out req.pem
Generate a self signed root certificate:
- openssl req -x509 -newkey rsa:1024 -keyout key.pem -out req.pem
+ openssl req -x509 -newkey rsa:2048 -keyout key.pem -out req.pem
Example of a file pointed to by the B<oid_file> option:
Sample configuration file prompting for field values:
[ req ]
- default_bits = 1024
+ default_bits = 2048
default_keyfile = privkey.pem
distinguished_name = req_distinguished_name
attributes = req_attributes
- x509_extensions = v3_ca
+ req_extensions = v3_ca
dirstring_type = nobmp
RANDFILE = $ENV::HOME/.rnd
[ req ]
- default_bits = 1024
+ default_bits = 2048
default_keyfile = keyfile.pem
distinguished_name = req_distinguished_name
attributes = req_attributes
The header and footer lines in the B<PEM> format are normally:
- -----BEGIN CERTIFICATE REQUEST----
- -----END CERTIFICATE REQUEST----
+ -----BEGIN CERTIFICATE REQUEST-----
+ -----END CERTIFICATE REQUEST-----
some software (some versions of Netscape certificate server) instead needs:
- -----BEGIN NEW CERTIFICATE REQUEST----
- -----END NEW CERTIFICATE REQUEST----
+ -----BEGIN NEW CERTIFICATE REQUEST-----
+ -----END NEW CERTIFICATE REQUEST-----
which is produced with the B<-newhdr> option but is otherwise compatible.
Either form is accepted transparently on input.
=head1 SEE ALSO
-L<x509(1)|x509(1)>, L<ca(1)|ca(1)>, L<genrsa(1)|genrsa(1)>,
-L<gendsa(1)|gendsa(1)>, L<config(5)|config(5)>
+L<x509(1)>, L<ca(1)>, L<genrsa(1)>,
+L<gendsa(1)>, L<config(5)>,
+L<x509v3_config(5)>
=cut
projects / openssl.git / blobdiff