openssl_cms_sign

Supported Versions: PHP 8

Sign a file

        openssl_cms_sign(    string $input_filename,    string $output_filename,    OpenSSLCertificate|string $certificate,    OpenSSLAsymmetricKey|OpenSSLCertificate|array|string $private_key,    ?array $headers,    int $flags = 0,    int $encoding = OPENSSL_ENCODING_SMIME,    ?string $untrusted_certificates_filename = null): bool