From 9b3c1223290432d0639c9b89e3b88f2da494c9aa Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Thu, 17 Aug 2017 13:15:39 +0200
Subject: [PATCH] Fix decoding of SQN values in SYSMO_USIMSJS1_FILE_EF_SQNC

---
 sysmo_usimsjs1.py | 8 ++++----
 tests/08_seq.out  | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/sysmo_usimsjs1.py b/sysmo_usimsjs1.py
index 2f11c6b..85e3849 100644
--- a/sysmo_usimsjs1.py
+++ b/sysmo_usimsjs1.py
@@ -150,10 +150,10 @@ class SYSMO_USIMSJS1_FILE_EF_SQNC:
 			return
 		if len(content) != 15:
 			raise ValueError("unexpected length of %u bytes", len(content))
-		self.ind_size_bits = content[0] >> 4
-		self.sqn_check_enabled = content[0] & 0x08
-		self.sqn_age_limit_enabled = bool(content[0] & 0x04)
-		self.sqn_max_delta_enabled = bool(content[0] & 0x02)
+		self.ind_size_bits = content[0] & 0xf
+		self.sqn_check_enabled = bool(content[0] & 0x10)
+		self.sqn_age_limit_enabled = bool(content[0] & 0x20)
+		self.sqn_max_delta_enabled = bool(content[0] & 0x40)
 		self.sqnms_offset = list_to_int(content[1:3])
 		self.max_delta = list_to_int(content[3:9]) >> self.ind_size_bits
 		self.age_limit = list_to_int(content[9:15]) >> self.ind_size_bits
diff --git a/tests/08_seq.out b/tests/08_seq.out
index 9d3d78b..a72b0f8 100644
--- a/tests/08_seq.out
+++ b/tests/08_seq.out
@@ -17,9 +17,9 @@ Reading Milenage Sequence parameters...
  * Initalizing...
 * Current SQN Configuration: 
    IND (bits): 5
-   SQN Check enabled: 0
-   SQN Age Limit enabled: 1
-   SQN Max Delta enabled: 0
+   SQN Check enabled: 1
+   SQN Age Limit enabled: 0
+   SQN Max Delta enabled: 1
    SQNms Offset: 0
    Max Delta: 268435456
    Age Limit: 268435456