isProper - small changes.

[skeinsum.git] / skein_cli.c

diff --git a/skein_cli.c b/skein_cli.c
index 0ab840835690951179942431663d506041ab4fba..d6e7649480d4b930cf53cd415ac606a5283fd9ca 100644 (file)
--- a/skein_cli.c
+++ b/skein_cli.c
@@ -283,17 +283,18 @@ int VerifyHashesFromFile(FILE *fp, int status, int warn, int quiet)
        return (NotProper || NoMatch) ? -1 : 1;
 }
 
-int isProper(char MsgDigest[])
+int isProper(const char MsgDigest[])
 {
-       if ((strlen(MsgDigest) - hashbitlen/4) != 0)
+       int len = strlen(MsgDigest);
+       if (len != (hashbitlen / 4))
                return 0;
        int index = 0;
-       char c = 0;
-       for(index = 0; index < strlen(MsgDigest);index++)
+       for (index = 0; index < len; index++)
        {
-               c = MsgDigest[index];
-               if(!(( c >= '0' && c <= '9' ) || ( c >= 'A' && c <= 'F')))
-                       return 0;
+               char c = MsgDigest[index];
+               if (c >= '0' && c <= '9') continue;
+               if (c >= 'A' && c <= 'F') continue;
+               return 0;
        }
 
        return 1;