openssl_pkey_get_public

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

openssl_pkey_get_public — Extract public key from certificate and prepare it for use

Description

openssl_pkey_get_public ( mixed $certificate ) : resource

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

Parameters

certificate

certificate can be one of the following:

  1. an X.509 certificate resource
  2. a string having the format file://path/to/file.pem. The named file must contain a PEM encoded certificate/public key (it may contain both).
  3. A PEM formatted public key.

Return Values

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

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https://www.php.net/manual/en/function.openssl-pkey-get-public.php