*
* calls: usign -F ...
*/
-int usign_f_pubkey(char *fingerprint, const char *pubkeyfile, bool quiet);
+int usign_f_pubkey(char fingerprint[17], const char *pubkeyfile, bool quiet);
-int usign_f_seckey(char *fingerprint, const char *seckeyfile, bool quiet);
+int usign_f_seckey(char fingerprint[17], const char *seckeyfile, bool quiet);
-int usign_f_sig(char *fingerprint, const char *sigfile, bool quiet);
+int usign_f_sig(char fingerprint[17], const char *sigfile, bool quiet);
/**
* custom extension to check for revokers