(PHP >= 5.3.0, PECL phar >= 1.1.0)
Phar::setSignatureAlgorithm — set the signature algorithm for a phar and apply it.
set the signature algorithm for a phar and apply it. The signature algorithm must be one of Phar::MD5, Phar::SHA1, Phar::SHA256, Phar::SHA512, or Phar::OPENSSL.
Note that all executable phar archives have a signature created automatically, SHA1 by default. data tar- or zip-based archives (archives created with the PharData class) must have their signature created and set explicitly via Phar::setSignatureAlgorithm().
One of Phar::MD5, Phar::SHA1, Phar::SHA256, Phar::SHA512, or Phar::OPENSSL
The contents of an OpenSSL private key, as extracted from a certificate or OpenSSL key file:
$private = openssl_get_privatekey(file_get_contents('private.pem'));
$pkey = '';
No value is returned.