laforge has uploaded this change for review.

View Change

pySim.esim.saip.personalization: Support Milenage customization

Milenage offers the capability for operators to modify the r1-r5
rotation constants as well as the c1-c5 xor-ing constants; let's
add ConfigurableParameters for that.

Change-Id: I397df6c0c708a8061e4adc0fde03a3f746bcb5b6
Related: SYS#7787
---
M pySim/esim/saip/personalization.py
1 file changed, 25 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/90/41690/1

diff --git a/pySim/esim/saip/personalization.py b/pySim/esim/saip/personalization.py
index 053ea0c..068ddba 100644
--- a/pySim/esim/saip/personalization.py
+++ b/pySim/esim/saip/personalization.py
@@ -322,3 +322,28 @@
         if self.input_value not in [1, 2, 3]:
             raise ValueError('Invalid algorithmID %s' % (self.input_value))
         self.value = self.input_value
+class MilenageRotationConstants(AlgoConfig, key='rotationConstants'):
+    """rotation constants r1,r2,r3,r4,r5 of Milenage, Range 0..127. See 3GPP TS 35.206 Sections 2.3 + 5.3.
+    Provided as octet-string concatenation of all 5 constants."""
+    def validate(self):
+        super().validate()
+        if len(self.input_value) != 5:
+            raise('Length of value must be 5 octets')
+        for r in self.input_value:
+            if r > 127:
+                raise ValueError('r values must be between 0 and 127')
+class MilenageXoringConstants(AlgoConfig, key='xoringConstants'):
+    """XOR-ing constants c1,c2,c3,c4,c5 of Milenage, 128bit each. See 3GPP TS 35.206 Sections 2.3 + 5.3.
+    Provided as octet-string concatenation of all 5 constants."""
+    def validate(self):
+        if len(self.input_value) != 80:
+            raise('Length of value must be 80 octets')
+        super().validate()
+class TuakNumberOfKeccak(AlgoConfig, key='numberOfKeccak'):
+    """Number of iterations of Keccak-f[1600] permuitation as recomended by Section 7.2 of 3GPP TS 35.231"""
+    def validate(self):
+        if not isinstance(self.input_value, int):
+            raise ValueError('Value must be an integer')
+        if self.input_value < 1 or self.input_value > 255:
+            raise ValueError('Value must be an integer between 1 and 255')
+        self.value = self.input_value

To view, visit change 41690. To unsubscribe, or for help writing mail filters, visit settings.