int operation = 0;
int ret = 0;
char **args;
- char *inmode = "r", *outmode = "w";
+ const char *inmode = "r", *outmode = "w";
char *infile = NULL, *outfile = NULL;
char *signerfile = NULL, *recipfile = NULL;
char *certfile = NULL, *keyfile = NULL, *contfile=NULL;