Php/docs/function.openssl-csr-get-public-key

• PHP Manual
• OpenSSL Functions
• Returns the public key of a CSR

openssl_csr_get_public_key

(PHP 5 >= 5.2.0, PHP 7)

openssl_csr_get_public_key — Returns the public key of a CSR

Description

openssl_csr_get_public_key ( mixed $csr [, bool $use_shortnames = TRUE ] ) : resource

openssl_csr_get_public_key() extracts the public key from csr and prepares it for use by other functions.

Parameters

csr

See CSR parameters for a list of valid values.

use_shortnames

Warning

This parameter is ignored

Return Values

Returns a positive key resource identifier on success, or FALSE on error.

Examples

Example #1 openssl_csr_get_public_key() example

<?php$subject = array(    "commonName" => "example.com",);$private_key = openssl_pkey_new(array(    "private_key_bits" => 2048,    "private_key_type" => OPENSSL_KEYTYPE_RSA,));$csr = openssl_csr_new($subject, $private_key, array('digest_alg' => 'sha256') );$public_key = openssl_csr_get_public_key($csr);$info = openssl_pkey_get_details($public_key);echo $info['key'];?>

See Also

• openssl_csr_get_subject() - Returns the subject of a CSR
• openssl_csr_new() - Generates a CSR
• openssl_pkey_get_details() - Returns an array with the key details
• openssl_pkey_export_to_file() - Gets an exportable representation of a key into a file
• openssl_pkey_export() - Gets an exportable representation of a key into a string