Pass type of requested key in the callback credential set

src/pluto/keys.c

@@ -554,12 +554,17 @@ typedef struct {
 /**
  * Passphrase callback to read from whack fd
  */
-static shared_key_t* whack_pass_cb(prompt_pass_t *pass,
+static shared_key_t* whack_pass_cb(prompt_pass_t *pass, shared_key_type_t type,
 								identification_t *me, identification_t *other,
 								id_match_t *match_me, id_match_t *match_other)
 {
 	int n;
 
+	if (type != SHARED_ANY && type != SHARED_PRIVATE_KEY_PASS)
+	{
+		return NULL;
+	}
+
 	if (pass->try > MAX_PROMPT_PASS_TRIALS)
 	{
 		whack_log(RC_LOG_SERIOUS, "invalid passphrase, too many trials");