freestyle-keys-1.0.0

2 files changed, 17 insertions, 0 deletions

diff --git a/freestyle_keys/__init__.py b/freestyle_keys/__init__.py
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+++ b/freestyle_keys/__init__.py
diff --git a/freestyle_keys/libre2.py b/freestyle_keys/libre2.py
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+"""Encryption keys used by FreeStyle Libre 2 glucometers.
+
+The following constants are key materials required to communicate with the FreeStyle
+Libre 2 glucometers.
+
+No copyright is claimed for these keys, as they are requisite constants that are part
+of the device's communication protocol.
+
+We assert these these keys do not constitute Technical Protection Measures for the
+purpose of copyright protection, as they do not protect copyrighted material but
+rather obfuscate the communication between two devices under the control of the user.
+"""
+
+AUTHORIZATION_ENCRYPTION_KEY = 0x360C0E171551821D7961F891197B52A1
+AUTHORIZATION_MAC_KEY = 0x738F004CD1A80D16622DB2E0DB8C60D4
+SESSION_ENCRYPTION_KEY = 0x9D42333D9DDD20A7164C2AB057F92EFD
+SESSION_MAC_KEY = 0x12B0D868D117D7C8379DE50FA97A7BA0