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xorcheck script converted in python3 + test

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This commit is contained in:
Philippe Teuwen 2020-02-21 16:29:52 +01:00
parent 5527cb2428
commit aa6fc60a22
2 changed files with 18 additions and 20 deletions
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1
pm3test.sh
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@ -116,6 +116,7 @@ while true; do
if ! CheckExecute "mfkey64 test" "tools/mfkey/mfkey64 9c599b32 82a4166c a1e458ce 6eea41e0 5cadf439" "Found Key: \[ffffffffffff\]"; then break; fi
if ! CheckExecute "mfkey64 long trace test" "tools/mfkey/./mfkey64 14579f69 ce844261 f8049ccb 0525c84f 9431cc40 7093df99 9972428ce2e8523f456b99c831e769dced09 8ca6827b ab797fd369e8b93a86776b40dae3ef686efd c3c381ba 49e2c9def4868d1777670e584c27230286f4 fbdcd7c1 4abd964b07d3563aa066ed0a2eac7f6312bf 9f9149ea" "Found Key: \[091e639cb715\]"; then break; fi
if ! CheckExecute "nonce2key test" "tools/nonce2key/nonce2key e9cadd9c a8bf4a12 a020a8285858b090 050f010607060e07 5693be6c00000000" "key recovered: fc00018778f7"; then break; fi
if ! CheckExecute "xorcheck test" "tools/xorcheck.py 04 00 80 64 ba" "final LRC XOR byte value: 5A"; then break; fi
printf "\n${C_GREEN}Tests [OK]${C_NC}\n\n"
exit 0
done

37
tools/xorcheck.py
View file

@ -1,4 +1,4 @@
#!/usr/bin/env python
#!/usr/bin/env python3
# xorcheck.py - find xor values for 8-bit LRC
#
@ -24,22 +24,21 @@ import sys
import os
if(len(sys.argv) < 3):
print
print '\t'+sys.argv[0] + ' - Generate final byte for XOR LRC'
print
print 'Usage: ' + sys.argv[0] + ' <ID Byte1> <ID Byte2> ... <LRC>'
print
print '\tSpecifying the bytes of a UID with a known LRC will find the last byte value'
print '\tneeded to generate that LRC with a rolling XOR. All bytes should be specified in HEX.'
print
print 'Example:'
print
print '\txorcheck.py 04 00 80 64 ba'
print
print 'Should produce the output:'
print
print '\tTarget (BA) requires final LRC XOR byte value: 5A'
print
print("""
\t{0} - Generate final byte for XOR LRC
Usage: {0} <ID Byte1> <ID Byte2> ... <LRC>
\tSpecifying the bytes of a UID with a known LRC will find the last byte value
\tneeded to generate that LRC with a rolling XOR. All bytes should be specified in HEX.
Example:
\t{0} 04 00 80 64 ba
Should produce the output:
\tTarget (BA) requires final LRC XOR byte value: 5A\n""".format(sys.argv[0]))
os._exit(True)
target= int(sys.argv[len(sys.argv) - 1],16)
@ -47,6 +46,4 @@ target= int(sys.argv[len(sys.argv) - 1],16)
lrc= 0x00
for i in range(len(sys.argv) - 1):
lrc ^= int(sys.argv[i + 1],16)
print
print 'Target (%02X) requires final LRC XOR byte value: %02X' % (target,lrc)
print
print('\nTarget (%02X) requires final LRC XOR byte value: %02X\n' % (target,lrc))