Fixed const correctness issues in programs and tests
diff --git a/programs/pkey/key_app.c b/programs/pkey/key_app.c
index ebe94a7..fc0269e 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -53,9 +53,9 @@
struct options
{
int mode; /* the mode to run the application in */
- char *filename; /* filename of the key file */
- char *password; /* password for the private key */
- char *password_file; /* password_file for the private key */
+ const char *filename; /* filename of the key file */
+ const char *password; /* password for the private key */
+ const char *password_file; /* password_file for the private key */
int debug_level; /* level of debugging */
} opt;