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 phar-based and tar-based phar archives have a signature created automatically, SHA1 by default. data tar-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 = '';
Throws UnexpectedValueException for many errors, BadMethodCallException if called for a zip-based phar archive, and a PharException if any problems occur flushing changes to disk.