Function PEM_write_PKCS8PrivateKey

pub unsafe extern "C" fn PEM_write_PKCS8PrivateKey(
    fp: *mut FILE,
    x: *const EVP_PKEY,
    enc: *const EVP_CIPHER,
    kstr: *mut c_char,
    klen: c_int,
    cd: pem_password_cb,
    u: *mut c_void,
) -> c_int