Ticket #1019: patch.diff

crypt_prog.cpp

@@ -110 +110 @@
     bool kpriv=false; // private key ?
 
     if (argc == 1) {
-        printf("missing command\n");
+        printf("missing command\nTry `crypt_prog -help' for more information.\n");
         exit(1);
     }
+
+    if (!strcmp(argv[1], "-help")){
+        printf("Utility program for encryption.\n"
+                 "-genkey n private_keyfile public_keyfile\n"
+                                  "\tcreate a key pair with n bits (512 <= n <= 1024)\n"
+                                  "\twrite it in hex notation\n"
+                 "-sign file private_keyfile\n"
+                                  "\tcreate a signature for a given file\n"
+                                  "\twrite it in hex notation\n"
+                 "-sign_string string private_keyfile\n"
+                                  "\tcreate a signature for a given string\n"
+                                  "\twrite it in hex notation\n"
+                 "-verify file signature_file public_keyfile\n"
+                                  "\tverify a signature\n"
+                 "-test_crypt private_keyfile public_keyfile\n"
+                                  "\ttest encrypt/decrypt\n"
+                 "-convkey o2b/b2o priv/pub input_file output_file\n"
+                                  "\tconvert keys between BOINC and OpenSSL format\n"
+                 "-cert_verify file signature_file certificate_dir\n"
+                                  "\tverify a signature using a directory of certificates\n");
+        exit(1);
+    
+    }
+    
     if (!strcmp(argv[1], "-genkey")) {
         if (argc < 5) {
             fprintf(stderr, "missing cmdline args\n");