"keyword">val</span> account_generate_fallback_key : <span><a href="../Types/Account/index.html#type-t">Types.Account.t</a> Ctypes_static.ptr</span> <span>&#45;&gt;</span> <span>unit Ctypes_static.ptr</span> <span>&#45;&gt;</span> Unsigned.size_t <span>&#45;&gt;</span> Unsigned.size_t</code></dt><dd><p><code>account_generate_fallback_key acc random random_len</code></p><p>Generates a new fallback key. Only one previous fallback key is stored. Returns olm_error() on error. If the number of random bytes is to