Returns the public key of a CSR
  • « openssl_csr_export
    		•   
  • openssl_csr_get_subject »
    		•

    openssl_csr_get_public_key

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    openssl_csr_get_public_key — Returns the public key of a CSR

    Description

    openssl_csr_get_public_key(OpenSSLCertificateSigningRequest|string $csr, bool $short_names = true): OpenSSLAsymmetricKey|false

    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.

    short_names
    Warning

    This parameter is ignored

    Return Values

    Returns an OpenSSLAsymmetricKey on success, or false on error.

    Changelog

    Version Description
    8.0.0 On success, this function returns an OpenSSLAsymmetricKey instance now; previously, a resource of type OpenSSL key was returned.
    8.0.0 csr accepts an OpenSSLCertificateSigningRequest instance now; previously, a resource of type OpenSSL X.509 CSR was accepted.

    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