Function PEM_cert_to_DER_cert

crates/stdlib/src/ssl.rs:4956–4966

(pem_cert: PyUtf8StrRef, vm: &VirtualMachine)

    #[pyfunction]
    fn PEM_cert_to_DER_cert(pem_cert: PyUtf8StrRef, vm: &VirtualMachine) -> PyResult<PyBytesRef> {
        // Parse PEM format
        let mut cursor = std::io::Cursor::new(pem_cert.as_bytes());
        let mut certs = rustls_pemfile::certs(&mut cursor);

        if let Some(Ok(cert)) = certs.next() {
            Ok(vm.ctx.new_bytes(cert.to_vec()))
        } else {
            Err(vm.new_value_error("Failed to parse PEM certificate"))
        }
    }

    // Windows-specific certificate store enumeration functions
    #[cfg(windows)]