* DESCRIPTION
*
* Return a textual representation of the fingerprint in *data, the
- * caller must free the returned string.
+ * caller must free the returned string. Returns NULL on error. If
+ * the `data_len' is longer than 255 bytes, only the first 255 bytes are
+ * used to create the fingerprint.
*
***/
char *silc_fingerprint(const unsigned char *data, SilcUInt32 data_len);