mirror of https://gerrit.osmocom.org/pysim
add contrib/eidtool.py: Tool for checking + computing EID checksum
Change-Id: If6c560a2de51718948fb99b816e080f2aff4d0ed
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#!/usr/bin/env python3
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# Command line tool to compute or verify EID (eUICC ID) values
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#
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# (C) 2024 by Harald Welte <laforge@osmocom.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import argparse
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from pySim.euicc import compute_eid_checksum, verify_eid_checksum
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option_parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter,
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description="""pySim EID Tool
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This utility program can be used to compute or verify the checksum of an EID
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(eUICC Identifier). See GSMA SGP.29 for the algorithm details.
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Example (verification):
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$ eidtool.py --verify 89882119900000000000000000001654
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EID checksum verified successfully
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Example (generation, passing first 30 digits):
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$ eidtool.py --compute 898821199000000000000000000016
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89882119900000000000000000001654
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Example (generation, passing all 32 digits):
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$ eidtool.py --compute 89882119900000000000000000001600
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89882119900000000000000000001654
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Example (generation, specifying base 30 digits and number to add):
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$ eidtool.py --compute 898821199000000000000000000000 --add 16
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89882119900000000000000000001654
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""")
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group = option_parser.add_mutually_exclusive_group(required=True)
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group.add_argument('--verify', help='Verify given EID csum')
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group.add_argument('--compute', help='Generate EID csum')
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option_parser.add_argument('--add', type=int, help='Add value to EID base before computing')
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if __name__ == '__main__':
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opts = option_parser.parse_args()
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if opts.verify:
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res = verify_eid_checksum(opts.verify)
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if res:
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print("EID checksum verified successfully")
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sys.exit(0)
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else:
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print("EID checksum invalid")
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sys.exit(1)
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elif opts.compute:
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eid = opts.compute
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if opts.add:
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if len(eid) != 30:
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print("EID base must be 30 digits when using --add")
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sys.exit(2)
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eid = str(int(eid) + int(opts.add))
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res = compute_eid_checksum(eid)
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print(res)
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