+/**
+ * \brief Output = SHA-1( input buffer ), with watchdog triggering
+ *
+ * \param input buffer holding the data
+ * \param ilen length of the input data
+ * \param output SHA-1 checksum result
+ * \param chunk_sz watchdog triggering period (in bytes of input processed)
+ */
+void sha1_csum_wd (unsigned char *input, int ilen,
+ unsigned char output[20], unsigned int chunk_sz);
+