update hashgen_c

hashgen_c/README.md

@@ -0,0 +1,18 @@
+### hashgen (c)
+- this is a complete rewrite of hashgen in C
+- other than micro controller / embedded systems, I have little coding experience with C
+- hashgen (Go) will remain my primary implementation of hashgen and I do not expect hashgen (C) to be maintained
+- hashgen (C) uses openssl for all hashing functions
+
+## usage example:
+- ./hashgen.bin -m md5 -w wordlist.txt -o output.txt
+- cat wordlist.txt | ./hashgen.bin -m md5 > output.txt
+
+### version history
+- v2023-03-18.1945; initial github release
+- v2023-03-27.1945; removed mutex locks for better performance
+- v2023-04-25.1020; handle memory allocations using malloc, count processed lines using atomic_size for thread safety
+- v2023-06-05.1810; default to stdin if -w not specified and stdout if -o not specified
+
+### compile from source:
+- gcc -o hashgen_c.bin hashgen.c -lcrypto -lpthread -O3

hashgen_c/hashgen.c

@@ -161,8 +161,6 @@ void main(int argc, char *argv[]) {
         print_usage();
     }
 
-    printf("Processing wordlist...\n");
-
     int opt;
     char *wordlist_file = NULL;
     char *hash_mode = NULL;
@@ -198,6 +196,8 @@ void main(int argc, char *argv[]) {
         }
     }
 
+    printf("Processing wordlist...\n");
+
     // if wordlist_file is NULL, -w flag was not provided
     if (!wordlist_file) {
         wordlist_file = "/dev/stdin";  // use stdin as default