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#!/usr/bin/env python
"""
Set up a YubiKey with a NIST PUB 198 A.2
20 bytes test vector in Slot 2 (variable input)
"""
import sys
import struct
import yubico
slot=2
try:
YK = yubico.find_yubikey(debug=True)
print "Version : %s " % YK.version()
Cfg = YK.init_config()
key='h:303132333435363738393a3b3c3d3e3f40414243'
Cfg.mode_challenge_response(key, type='HMAC', variable=True)
Cfg.extended_flag('SERIAL_API_VISIBLE', True)
user_input = raw_input('Write configuration to slot %i of YubiKey? [y/N] : ' % slot )
if user_input in ('y', 'ye', 'yes'):
YK.write_config(Cfg, slot=slot)
print "\nSuccess!"
else:
print "\nAborted"
except yubico.yubico_exception.YubicoError as inst:
print "ERROR: %s" % inst.reason
sys.exit(1)
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