From: merlokk <olegmsn@gmail.com>
Date: Wed, 1 Nov 2017 16:22:03 +0000 (+0200)
Subject: revert SAK check
X-Git-Tag: v3.1.0~133^2~8
X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/7376da5c44ac5d33c3515730f7213a64d51d696a?ds=sidebyside

revert SAK check
---

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 7d484015..33db9f22 100644
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1820,9 +1820,8 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
 		p_hi14a_card->sak = sak;
 	}
 
-	// non iso14443a compliant tag
-	// https://www.nxp.com/docs/en/application-note/AN10834.pdf page 7
-	if( (sak & 0x20) != 0) return 2; 
+	// PICC compilant with iso14443a-4 ---> (SAK & 0x20 != 0)
+  	if( (sak & 0x20) == 0) return 2; 
 
 	if (!no_rats) {
 		// Request for answer to select