From 951a27e35e82d31388220d13a9bc5f4747673b0f Mon Sep 17 00:00:00 2001
From: merlokk <olegmsn@gmail.com>
Date: Wed, 1 Nov 2017 16:19:34 +0200
Subject: [PATCH] added detect classic prng to `hf mf info`

---
 client/cmdhf14a.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index 3f103f5f..66210812 100644
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -244,8 +244,10 @@ int CmdHF14AInfo(const char *Cmd)
 	PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
 	PrintAndLog(" SAK : %02x [%d]", card.sak, resp.arg[0]);
 
+	bool isMifareClassic = true;
 	switch (card.sak) {
 		case 0x00: 
+			isMifareClassic = false;
 
 			//***************************************test****************
 			// disconnect
@@ -480,6 +482,19 @@ int CmdHF14AInfo(const char *Cmd)
 	// try to see if card responses to "chinese magic backdoor" commands.
 	mfCIdentify();
 	
+	if (isMifareClassic) {		
+		switch(DetectClassicPrng()) {
+		case 0:
+			PrintAndLog("Prng detection: WEAK");
+			break;
+		case 1:
+			PrintAndLog("Prng detection: HARDEND (hardnested)");		
+			break;
+		default:
+			PrintAndLog("Prng detection error.");		
+		}
+	}
+	
 	return select_status;
 }