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pySim.euicc: Add 'get_data sgp02_eid' in ADF.ECASD of M2M eUICC

The M2M eUICC are completely different from the consumer/IoT eUICC.

Obtaining the EID works via GET DATA in the ECASD.  Let's add support
for that.

Change-Id: I6cca6f75d268229244c90b3f1f88e26c89a2b4e0
---
M pySim/euicc.py
1 file changed, 7 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/48/38048/1

diff --git a/pySim/euicc.py b/pySim/euicc.py
index 1ad0f22..c7b59d9 100644
--- a/pySim/euicc.py
+++ b/pySim/euicc.py
@@ -35,6 +35,13 @@
 from pySim.commands import SimCardCommands
 import pySim.global_platform
 
+# SGP.02 Section 2.2.2
+class Sgp02Eid(BER_TLV_IE, tag=0x5a):
+    _construct = BcdAdapter(GreedyBytes)
+
+# patch this into global_platform, to allow 'get_data sgp02_eid' in EF.ECASD
+pySim.global_platform.DataCollection.possible_nested.append(Sgp02Eid)
+
 def compute_eid_checksum(eid) -> str:
     """Compute and add/replace check digits of an EID value according to GSMA SGP.29 Section 10."""
     if isinstance(eid, str):

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