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+.\" Automatically generated by Pod::Man version 1.15
+.\" Thu May 9 13:14:45 2002
+.\"
+.\" Standard preamble:
+.\" ======================================================================
+.de Sh \" Subsection heading
+.br
+.if t .Sp
+.ne 5
+.PP
+\fB\\$1\fR
+.PP
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+
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+..
+.\" Set up some character translations and predefined strings. \*(-- will
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+.\" double quote, and \*(R" will give a right double quote. | will give a
+.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used
+.\" to do unbreakable dashes and therefore won't be available. \*(C` and
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+.\"
+.\" If the F register is turned on, we'll generate index entries on stderr
+.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and
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+.if \n(.H>23 .if \n(.V>19 \
+\{\
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+. ds o a
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+. ds ae ae
+. ds Ae AE
+.\}
+.rm #[ #] #H #V #F C
+.\" ======================================================================
+.\"
+.IX Title "REQ 1"
+.TH REQ 1 "perl v5.6.1" "2000-11-13" "User Contributed Perl Documentation"
+.UC
+.SH "NAME"
+req \- PKCS#10 certificate and certificate generating utility.
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+\&\fBopenssl\fR \fBreq\fR
+[\fB\-inform PEM|DER\fR]
+[\fB\-outform PEM|DER\fR]
+[\fB\-in filename\fR]
+[\fB\-passin arg\fR]
+[\fB\-out filename\fR]
+[\fB\-passout arg\fR]
+[\fB\-text\fR]
+[\fB\-noout\fR]
+[\fB\-verify\fR]
+[\fB\-modulus\fR]
+[\fB\-new\fR]
+[\fB\-rand \f(BIfile\fB\|(s)\fR]
+[\fB\-newkey rsa:bits\fR]
+[\fB\-newkey dsa:file\fR]
+[\fB\-nodes\fR]
+[\fB\-key filename\fR]
+[\fB\-keyform PEM|DER\fR]
+[\fB\-keyout filename\fR]
+[\fB\-[md5|sha1|md2|mdc2]\fR]
+[\fB\-config filename\fR]
+[\fB\-x509\fR]
+[\fB\-days n\fR]
+[\fB\-asn1\-kludge\fR]
+[\fB\-newhdr\fR]
+[\fB\-extensions section\fR]
+[\fB\-reqexts section\fR]
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+The \fBreq\fR command primarily creates and processes certificate requests
+in PKCS#10 format. It can additionally create self signed certificates
+for use as root CAs for example.
+.SH "COMMAND OPTIONS"
+.IX Header "COMMAND OPTIONS"
+.Ip "\fB\-inform DER|PEM\fR" 4
+.IX Item "-inform DER|PEM"
+This specifies the input format. The \fB\s-1DER\s0\fR option uses an \s-1ASN1\s0 \s-1DER\s0 encoded
+form compatible with the PKCS#10. The \fB\s-1PEM\s0\fR form is the default format: it
+consists of the \fB\s-1DER\s0\fR format base64 encoded with additional header and
+footer lines.
+.Ip "\fB\-outform DER|PEM\fR" 4
+.IX Item "-outform DER|PEM"
+This specifies the output format, the options have the same meaning as the
+\&\fB\-inform\fR option.
+.Ip "\fB\-in filename\fR" 4
+.IX Item "-in filename"
+This specifies the input filename to read a request from or standard input
+if this option is not specified. A request is only read if the creation
+options (\fB\-new\fR and \fB\-newkey\fR) are not specified.
+.Ip "\fB\-passin arg\fR" 4
+.IX Item "-passin arg"
+the input file password source. For more information about the format of \fBarg\fR
+see the \fB\s-1PASS\s0 \s-1PHRASE\s0 \s-1ARGUMENTS\s0\fR section in openssl(1).
+.Ip "\fB\-out filename\fR" 4
+.IX Item "-out filename"
+This specifies the output filename to write to or standard output by
+default.
+.Ip "\fB\-passout arg\fR" 4
+.IX Item "-passout arg"
+the output file password source. For more information about the format of \fBarg\fR
+see the \fB\s-1PASS\s0 \s-1PHRASE\s0 \s-1ARGUMENTS\s0\fR section in openssl(1).
+.Ip "\fB\-text\fR" 4
+.IX Item "-text"
+prints out the certificate request in text form.
+.Ip "\fB\-noout\fR" 4
+.IX Item "-noout"
+this option prevents output of the encoded version of the request.
+.Ip "\fB\-modulus\fR" 4
+.IX Item "-modulus"
+this option prints out the value of the modulus of the public key
+contained in the request.
+.Ip "\fB\-verify\fR" 4
+.IX Item "-verify"
+verifies the signature on the request.
+.Ip "\fB\-new\fR" 4
+.IX Item "-new"
+this option generates a new certificate request. It will prompt
+the user for the relevant field values. The actual fields
+prompted for and their maximum and minimum sizes are specified
+in the configuration file and any requested extensions.
+.Sp
+If the \fB\-key\fR option is not used it will generate a new \s-1RSA\s0 private
+key using information specified in the configuration file.
+.Ip "\fB\-rand \f(BIfile\fB\|(s)\fR" 4
+.IX Item "-rand file"
+a file or files containing random data used to seed the random number
+generator, or an \s-1EGD\s0 socket (see RAND_egd(3)).
+Multiple files can be specified separated by a OS-dependent character.
+The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
+all others.
+.Ip "\fB\-newkey arg\fR" 4
+.IX Item "-newkey arg"
+this option creates a new certificate request and a new private
+key. The argument takes one of two forms. \fBrsa:nbits\fR, where
+\&\fBnbits\fR is the number of bits, generates an \s-1RSA\s0 key \fBnbits\fR
+in size. \fBdsa:filename\fR generates a \s-1DSA\s0 key using the parameters
+in the file \fBfilename\fR.
+.Ip "\fB\-key filename\fR" 4
+.IX Item "-key filename"
+This specifies the file to read the private key from. It also
+accepts PKCS#8 format private keys for \s-1PEM\s0 format files.
+.Ip "\fB\-keyform PEM|DER\fR" 4
+.IX Item "-keyform PEM|DER"
+the format of the private key file specified in the \fB\-key\fR
+argument. \s-1PEM\s0 is the default.
+.Ip "\fB\-keyout filename\fR" 4
+.IX Item "-keyout filename"
+this gives the filename to write the newly created private key to.
+If this option is not specified then the filename present in the
+configuration file is used.
+.Ip "\fB\-nodes\fR" 4
+.IX Item "-nodes"
+if this option is specified then if a private key is created it
+will not be encrypted.
+.Ip "\fB\-[md5|sha1|md2|mdc2]\fR" 4
+.IX Item "-[md5|sha1|md2|mdc2]"
+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 \s-1DSA\s0 requests: they always use \s-1SHA1\s0.
+.Ip "\fB\-config filename\fR" 4
+.IX Item "-config filename"
+this allows an alternative configuration file to be specified,
+this overrides the compile time filename or any specified in
+the \fB\s-1OPENSSL_CONF\s0\fR environment variable.
+.Ip "\fB\-x509\fR" 4
+.IX Item "-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 \s-1CA\s0. The extensions added to the certificate
+(if any) are specified in the configuration file.
+.Ip "\fB\-days n\fR" 4
+.IX Item "-days n"
+when the \fB\-x509\fR option is being used this specifies the number of
+days to certify the certificate for. The default is 30 days.
+.Ip "\fB\-extensions section\fR" 4
+.IX Item "-extensions section"
+.PD 0
+.Ip "\fB\-reqexts section\fR" 4
+.IX Item "-reqexts section"
+.PD
+these options specify alternative sections to include certificate
+extensions (if the \fB\-x509\fR option is present) or certificate
+request extensions. This allows several different sections to
+be used in the same configuration file to specify requests for
+a variety of purposes.
+.Ip "\fB\-asn1\-kludge\fR" 4
+.IX Item "-asn1-kludge"
+by default the \fBreq\fR command outputs certificate requests containing
+no attributes in the correct PKCS#10 format. However certain CAs will only
+accept requests containing no attributes in an invalid form: this
+option produces this invalid format.
+.Sp
+More precisely the \fBAttributes\fR in a PKCS#10 certificate request
+are defined as a \fB\s-1SET\s0 \s-1OF\s0 Attribute\fR. They are \fBnot \s-1OPTIONAL\s0\fR so
+if no attributes are present then they should be encoded as an
+empty \fB\s-1SET\s0 \s-1OF\s0\fR. The invalid form does not include the empty
+\&\fB\s-1SET\s0 \s-1OF\s0\fR whereas the correct form does.
+.Sp
+It should be noted that very few CAs still require the use of this option.
+.Ip "\fB\-newhdr\fR" 4
+.IX Item "-newhdr"
+Adds the word \fB\s-1NEW\s0\fR to the \s-1PEM\s0 file header and footer lines on the outputed
+request. Some software (Netscape certificate server) and some CAs need this.
+.SH "CONFIGURATION FILE FORMAT"
+.IX Header "CONFIGURATION FILE FORMAT"
+The configuration options are specified in the \fBreq\fR section of
+the configuration file. As with all configuration files if no
+value is specified in the specific section (i.e. \fBreq\fR) then
+the initial unnamed or \fBdefault\fR section is searched too.
+.PP
+The options available are described in detail below.
+.Ip "\fBinput_password output_password\fR" 4
+.IX Item "input_password output_password"
+The passwords for the input private key file (if present) and
+the output private key file (if one will be created). The
+command line options \fBpassin\fR and \fBpassout\fR override the
+configuration file values.
+.Ip "\fBdefault_bits\fR" 4
+.IX Item "default_bits"
+This specifies the default key size in bits. If not specified then
+512 is used. It is used if the \fB\-new\fR option is used. It can be
+overridden by using the \fB\-newkey\fR option.
+.Ip "\fBdefault_keyfile\fR" 4
+.IX Item "default_keyfile"
+This is the default filename to write a private key to. If not
+specified the key is written to standard output. This can be
+overridden by the \fB\-keyout\fR option.
+.Ip "\fBoid_file\fR" 4
+.IX Item "oid_file"
+This specifies a file containing additional \fB\s-1OBJECT\s0 \s-1IDENTIFIERS\s0\fR.
+Each line of the file should consist of the numerical form of the
+object identifier followed by white space then the short name followed
+by white space and finally the long name.
+.Ip "\fBoid_section\fR" 4
+.IX Item "oid_section"
+This specifies a section in the configuration file containing extra
+object identifiers. Each line should consist of the short name of the
+object identifier followed by \fB=\fR and the numerical form. The short
+and long names are the same when this option is used.
+.Ip "\fB\s-1RANDFILE\s0\fR" 4
+.IX Item "RANDFILE"
+This specifies a filename in which random number seed information is
+placed and read from, or an \s-1EGD\s0 socket (see RAND_egd(3)).
+It is used for private key generation.
+.Ip "\fBencrypt_key\fR" 4
+.IX Item "encrypt_key"
+If this is set to \fBno\fR then if a private key is generated it is
+\&\fBnot\fR encrypted. This is equivalent to the \fB\-nodes\fR command line
+option. For compatibility \fBencrypt_rsa_key\fR is an equivalent option.
+.Ip "\fBdefault_md\fR" 4
+.IX Item "default_md"
+This option specifies the digest algorithm to use. Possible values
+include \fBmd5 sha1 mdc2\fR. If not present then \s-1MD5\s0 is used. This
+option can be overridden on the command line.
+.Ip "\fBstring_mask\fR" 4
+.IX Item "string_mask"
+This option masks out the use of certain string types in certain
+fields. Most users will not need to change this option.
+.Sp
+It can be set to several values \fBdefault\fR which is also the default
+option uses PrintableStrings, T61Strings and BMPStrings if the
+\&\fBpkix\fR value is used then only PrintableStrings and BMPStrings will
+be used. This follows the \s-1PKIX\s0 recommendation in \s-1RFC2459\s0. If the
+\&\fButf8only\fR option is used then only UTF8Strings will be used: this
+is the \s-1PKIX\s0 recommendation in \s-1RFC2459\s0 after 2003. Finally the \fBnombstr\fR
+option just uses PrintableStrings and T61Strings: certain software has
+problems with BMPStrings and UTF8Strings: in particular Netscape.
+.Ip "\fBreq_extensions\fR" 4
+.IX Item "req_extensions"
+this specifies the configuration file section containing a list of
+extensions to add to the certificate request. It can be overridden
+by the \fB\-reqexts\fR command line switch.
+.Ip "\fBx509_extensions\fR" 4
+.IX Item "x509_extensions"
+this specifies the configuration file section containing a list of
+extensions to add to certificate generated when the \fB\-x509\fR switch
+is used. It can be overridden by the \fB\-extensions\fR command line switch.
+.Ip "\fBprompt\fR" 4
+.IX Item "prompt"
+if set to the value \fBno\fR this disables prompting of certificate fields
+and just takes values from the config file directly. It also changes the
+expected format of the \fBdistinguished_name\fR and \fBattributes\fR sections.
+.Ip "\fBattributes\fR" 4
+.IX Item "attributes"
+this specifies the section containing any request attributes: its format
+is the same as \fBdistinguished_name\fR. Typically these may contain the
+challengePassword or unstructuredName types. They are currently ignored
+by OpenSSL's request signing utilities but some CAs might want them.
+.Ip "\fBdistinguished_name\fR" 4
+.IX Item "distinguished_name"
+This specifies the section containing the distinguished name fields to
+prompt for when generating a certificate or certificate request. The format
+is described in the next section.
+.SH "DISTINGUISHED NAME AND ATTRIBUTE SECTION FORMAT"
+.IX Header "DISTINGUISHED NAME AND ATTRIBUTE SECTION FORMAT"
+There are two separate formats for the distinguished name and attribute
+sections. If the \fBprompt\fR option is set to \fBno\fR then these sections
+just consist of field names and values: for example,
+.PP
+.Vb 3
+\& CN=My Name
+\& OU=My Organization
+\& emailAddress=someone@somewhere.org
+.Ve
+This allows external programs (e.g. \s-1GUI\s0 based) to generate a template file
+with all the field names and values and just pass it to \fBreq\fR. An example
+of this kind of configuration file is contained in the \fB\s-1EXAMPLES\s0\fR section.
+.PP
+Alternatively if the \fBprompt\fR option is absent or not set to \fBno\fR then the
+file contains field prompting information. It consists of lines of the form:
+.PP
+.Vb 4
+\& fieldName="prompt"
+\& fieldName_default="default field value"
+\& fieldName_min= 2
+\& fieldName_max= 4
+.Ve
+\&\*(L"fieldName\*(R" is the field name being used, for example commonName (or \s-1CN\s0).
+The \*(L"prompt\*(R" string is used to ask the user to enter the relevant
+details. If the user enters nothing then the default value is used if no
+default value is present then the field is omitted. A field can
+still be omitted if a default value is present if the user just
+enters the '.' character.
+.PP
+The number of characters entered must be between the fieldName_min and
+fieldName_max limits: there may be additional restrictions based
+on the field being used (for example countryName can only ever be
+two characters long and must fit in a PrintableString).
+.PP
+Some fields (such as organizationName) can be used more than once
+in a \s-1DN\s0. This presents a problem because configuration files will
+not recognize the same name occurring twice. To avoid this problem
+if the fieldName contains some characters followed by a full stop
+they will be ignored. So for example a second organizationName can
+be input by calling it \*(L"1.organizationName\*(R".
+.PP
+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
+is include as well as name, surname, givenName initials and dnQualifier.
+.PP
+Additional object identifiers can be defined with the \fBoid_file\fR or
+\&\fBoid_section\fR options in the configuration file. Any additional fields
+will be treated as though they were a DirectoryString.
+.SH "EXAMPLES"
+.IX Header "EXAMPLES"
+Examine and verify certificate request:
+.PP
+.Vb 1
+\& openssl req -in req.pem -text -verify -noout
+.Ve
+Create a private key and then generate a certificate request from it:
+.PP
+.Vb 2
+\& openssl genrsa -out key.pem 1024
+\& openssl req -new -key key.pem -out req.pem
+.Ve
+The same but just using req:
+.PP
+.Vb 1
+\& openssl req -newkey rsa:1024 -keyout key.pem -out req.pem
+.Ve
+Generate a self signed root certificate:
+.PP
+.Vb 1
+\& openssl req -x509 -newkey rsa:1024 -keyout key.pem -out req.pem
+.Ve
+Example of a file pointed to by the \fBoid_file\fR option:
+.PP
+.Vb 2
+\& 1.2.3.4 shortName A longer Name
+\& 1.2.3.6 otherName Other longer Name
+.Ve
+Example of a section pointed to by \fBoid_section\fR making use of variable
+expansion:
+.PP
+.Vb 2
+\& testoid1=1.2.3.5
+\& testoid2=${testoid1}.6
+.Ve
+Sample configuration file prompting for field values:
+.PP
+.Vb 6
+\& [ req ]
+\& default_bits = 1024
+\& default_keyfile = privkey.pem
+\& distinguished_name = req_distinguished_name
+\& attributes = req_attributes
+\& x509_extensions = v3_ca
+.Ve
+.Vb 1
+\& dirstring_type = nobmp
+.Ve
+.Vb 5
+\& [ req_distinguished_name ]
+\& countryName = Country Name (2 letter code)
+\& countryName_default = AU
+\& countryName_min = 2
+\& countryName_max = 2
+.Ve
+.Vb 1
+\& localityName = Locality Name (eg, city)
+.Ve
+.Vb 1
+\& organizationalUnitName = Organizational Unit Name (eg, section)
+.Ve
+.Vb 2
+\& commonName = Common Name (eg, YOUR name)
+\& commonName_max = 64
+.Ve
+.Vb 2
+\& emailAddress = Email Address
+\& emailAddress_max = 40
+.Ve
+.Vb 4
+\& [ req_attributes ]
+\& challengePassword = A challenge password
+\& challengePassword_min = 4
+\& challengePassword_max = 20
+.Ve
+.Vb 1
+\& [ v3_ca ]
+.Ve
+.Vb 3
+\& subjectKeyIdentifier=hash
+\& authorityKeyIdentifier=keyid:always,issuer:always
+\& basicConstraints = CA:true
+.Ve
+Sample configuration containing all field values:
+.PP
+.Vb 1
+\& RANDFILE = $ENV::HOME/.rnd
+.Ve
+.Vb 7
+\& [ req ]
+\& default_bits = 1024
+\& default_keyfile = keyfile.pem
+\& distinguished_name = req_distinguished_name
+\& attributes = req_attributes
+\& prompt = no
+\& output_password = mypass
+.Ve
+.Vb 8
+\& [ req_distinguished_name ]
+\& C = GB
+\& ST = Test State or Province
+\& L = Test Locality
+\& O = Organization Name
+\& OU = Organizational Unit Name
+\& CN = Common Name
+\& emailAddress = test@email.address
+.Ve
+.Vb 2
+\& [ req_attributes ]
+\& challengePassword = A challenge password
+.Ve
+.SH "NOTES"
+.IX Header "NOTES"
+The header and footer lines in the \fB\s-1PEM\s0\fR format are normally:
+.PP
+.Vb 2
+\& -----BEGIN CERTIFICATE REQUEST----
+\& -----END CERTIFICATE REQUEST----
+.Ve
+some software (some versions of Netscape certificate server) instead needs:
+.PP
+.Vb 2
+\& -----BEGIN NEW CERTIFICATE REQUEST----
+\& -----END NEW CERTIFICATE REQUEST----
+.Ve
+which is produced with the \fB\-newhdr\fR option but is otherwise compatible.
+Either form is accepted transparently on input.
+.PP
+The certificate requests generated by \fBXenroll\fR with \s-1MSIE\s0 have extensions
+added. It includes the \fBkeyUsage\fR extension which determines the type of
+key (signature only or general purpose) and any additional OIDs entered
+by the script in an extendedKeyUsage extension.
+.SH "DIAGNOSTICS"
+.IX Header "DIAGNOSTICS"
+The following messages are frequently asked about:
+.PP
+.Vb 2
+\& Using configuration from /some/path/openssl.cnf
+\& Unable to load config info
+.Ve
+This is followed some time later by...
+.PP
+.Vb 2
+\& unable to find 'distinguished_name' in config
+\& problems making Certificate Request
+.Ve
+The first error message is the clue: it can't find the configuration
+file! Certain operations (like examining a certificate request) don't
+need a configuration file so its use isn't enforced. Generation of
+certificates or requests however does need a configuration file. This
+could be regarded as a bug.
+.PP
+Another puzzling message is this:
+.PP
+.Vb 2
+\& Attributes:
+\& a0:00
+.Ve
+this is displayed when no attributes are present and the request includes
+the correct empty \fB\s-1SET\s0 \s-1OF\s0\fR structure (the \s-1DER\s0 encoding of which is 0xa0
+0x00). If you just see:
+.PP
+.Vb 1
+\& Attributes:
+.Ve
+then the \fB\s-1SET\s0 \s-1OF\s0\fR is missing and the encoding is technically invalid (but
+it is tolerated). See the description of the command line option \fB\-asn1\-kludge\fR
+for more information.
+.SH "ENVIRONMENT VARIABLES"
+.IX Header "ENVIRONMENT VARIABLES"
+The variable \fB\s-1OPENSSL_CONF\s0\fR if defined allows an alternative configuration
+file location to be specified, it will be overridden by the \fB\-config\fR command
+line switch if it is present. For compatibility reasons the \fB\s-1SSLEAY_CONF\s0\fR
+environment variable serves the same purpose but its use is discouraged.
+.SH "BUGS"
+.IX Header "BUGS"
+OpenSSL's handling of T61Strings (aka TeletexStrings) is broken: it effectively
+treats them as \s-1ISO-8859\-1\s0 (Latin 1), Netscape and \s-1MSIE\s0 have similar behaviour.
+This can cause problems if you need characters that aren't available in
+PrintableStrings and you don't want to or can't use BMPStrings.
+.PP
+As a consequence of the T61String handling the only correct way to represent
+accented characters in OpenSSL is to use a BMPString: unfortunately Netscape
+currently chokes on these. If you have to use accented characters with Netscape
+and \s-1MSIE\s0 then you currently need to use the invalid T61String form.
+.PP
+The current prompting is not very friendly. It doesn't allow you to confirm what
+you've just entered. Other things like extensions in certificate requests are
+statically defined in the configuration file. Some of these: like an email
+address in subjectAltName should be input by the user.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+x509(1), ca(1), genrsa(1),
+gendsa(1), config(5)
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