f the message in bytes on success. Writes the message as base64 into the message buffer. Returns olm_error() on failure. If the message buffer is too small then olm_session_last_error() will be &quot;OUTPUT_BUFFER_TOO_SMALL&quot;. If there weren't enough random bytes then olm_session_last_error() will be &quot;NOT_ENOUGH_RANDOM&quot;.</p></dd></dl><dl><dt class="spec value" id="val-decrypt_max_plaintext_length"><a href="#val-decrypt_max_plaintext_length" class="anchor"></a><code><span class="keyword">val</s