Generates a CSR

# openssl_csr_new

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

openssl_csr_new — Generates a CSR

### Descrierea

openssl_csr_new ( array `$dn` , resource `&$privkey` [, array `$configargs` [, array `$extraattribs` ]] ) : mixed

openssl_csr_new() generates a new CSR (Certificate Signing Request) based on the information provided by `dn`.

> Notă: Trebuie să aveți un fișier openssl.cnf valid instalat pentru ca această funcție să opereze corect. Vedeți notele în secțiunea de instalare pentru informații suplimentare.

### Parametri

`dn`

  The Distinguished Name or subject fields to be used in the certificate.

`privkey`

  `privkey` should be set to a private key that was previously generated by openssl_pkey_new() (or otherwise obtained from the other openssl_pkey family of functions). The corresponding public portion of the key will be used to sign the CSR.

`configargs`

  By default, the information in your system openssl.conf is used to initialize the request; you can specify a configuration file section by setting the config_section_section key of `configargs`. You can also specify an alternative openssl configuration file by setting the value of the config key to the path of the file you want to use. The following keys, if present in `configargs` behave as their equivalents in the openssl.conf, as listed in the table below.

  Configuration overrides
  `configargs` key | type | openssl.conf equivalent | description
  --- | --- | --- | ---
  digest_alg | string | default_md | Digest method or signature hash, usually one of openssl_get_md_methods()
  x509_extensions | string | x509_extensions | Selects which extensions should be used when creating an x509 certificate
  req_extensions | string | req_extensions | Selects which extensions should be used when creating a CSR
  private_key_bits | integer | default_bits | Specifies how many bits should be used to generate a private key
  private_key_type | integer | none | Specifies the type of private key to create. This can be one of `OPENSSL_KEYTYPE_DSA`, `OPENSSL_KEYTYPE_DH`, `OPENSSL_KEYTYPE_RSA` or `OPENSSL_KEYTYPE_EC`. The default value is `OPENSSL_KEYTYPE_RSA`.
  encrypt_key | boolean | encrypt_key | Should an exported key (with passphrase) be encrypted?
  encrypt_key_cipher | integer | none | One of cipher constants.
  curve_name | string | none | One of openssl_get_curve_names().
  config | string | N/A | Path to your own alternative openssl.conf file.

`extraattribs`

  `extraattribs` is used to specify additional configuration options for the CSR. Both `dn` and `extraattribs` are associative arrays whose keys are converted to OIDs and applied to the relevant part of the request.

### Valorile întoarse

Returns the CSR sau `FALSE` în cazul eșecului.

### Istoricul schimbărilor

Versiune | Descriere
--- | ---
7.1.0 | `configargs` now also supports curve_name.

### Exemple

Example #1 Creating a self-signed certificate

`<?php
// for SSL server certificates the commonName is the domain name to be secured
// for S/MIME email certificates the commonName is the owner of the email address
// location and identification fields refer to the owner of domain or email subject to be secured
$dn = array(
"countryName" => "GB",
"stateOrProvinceName" => "Somerset",
"localityName" => "Glastonbury",
"organizationName" => "The Brain Room Limited",
"organizationalUnitName" => "PHP Documentation Team",
"commonName" => "Wez Furlong",
"emailAddress" => "wez@example.com"
);
// Generate a new private (and public) key pair
$privkey = openssl_pkey_new(array(
"private_key_bits" => 2048,
"private_key_type" => OPENSSL_KEYTYPE_RSA,
));
// Generate a certificate signing request
$csr = openssl_csr_new($dn, $privkey, array('digest_alg' => 'sha256'));
// Generate a self-signed cert, valid for 365 days
$x509 = openssl_csr_sign($csr, null, $privkey, $days=365, array('digest_alg' => 'sha256'));
// Save your private key, CSR and self-signed cert for later use
openssl_csr_export($csr, $csrout) and var_dump($csrout);
openssl_x509_export($x509, $certout) and var_dump($certout);
openssl_pkey_export($privkey, $pkeyout, "mypassword") and var_dump($pkeyout);
// Show any errors that occurred here
while (($e = openssl_error_string()) !== false) {
echo $e . "\n";
}
?>`

Example #2 Creating a self-signed ECC certificate (as of PHP 7.1.0)

`<?php
$subject = array(
"commonName" => "docs.php.net",
);
// Generate a new private (and public) key pair
$private_key = openssl_pkey_new(array(
"private_key_type" => OPENSSL_KEYTYPE_EC,
"curve_name" => 'prime256v1',
));
// Generate a certificate signing request
$csr = openssl_csr_new($subject, $private_key, array('digest_alg' => 'sha384'));
// Generate self-signed EC cert
$x509 = openssl_csr_sign($csr, null, $private_key, $days=365, array('digest_alg' => 'sha384'));
openssl_x509_export_to_file($x509, 'ecc-cert.pem');
openssl_pkey_export_to_file($private_key, 'ecc-private.key');
?>`

### A se vedea și

- openssl_csr_sign() - Sign a CSR with another certificate (or itself) and generate a certificate