more doxygen

[disorder] / lib / authhash.c

diff --git a/lib/authhash.c b/lib/authhash.c
index 7850c119c30a449c7fd3b0ae973d4a9a9219bf0b..5c66c012c890eeaf1cd742290aa68865bb4adbab 100644 (file)
--- a/lib/authhash.c
+++ b/lib/authhash.c
@@ -23,20 +23,33 @@
 
 #include <stddef.h>
 #include <gcrypt.h>
+#include <assert.h>
 
 #include "hex.h"
 #include "log.h"
 #include "authhash.h"
 
 #ifndef AUTHHASH
+/** @brief Which hash function to use */
 # define AUTHHASH GCRY_MD_SHA1
 #endif
 
+/** @brief Perform the authorization hash function
+ * @param challenge Pointer to challange
+ * @param nchallenge Size of challenge
+ * @param password Password
+ *
+ * Computes H(challenge|password) and returns it as a newly allocated hex
+ * string.  Currently the hash function is SHA-1, but this may be changed in
+ * future versions; see @ref AUTHHASH.
+ */
 const char *authhash(const void *challenge, size_t nchallenge,
                     const char *password) {
   gcrypt_hash_handle h;
   const char *res;
-  
+
+  assert(challenge != 0);
+  assert(password != 0);
 #if HAVE_GCRY_ERROR_T
   {
     gcry_error_t e;