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PSK option added

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This commit is contained in:
Alexandre Dulaunoy 2012-12-08 13:00:17 +01:00
parent 785d3b66b1
commit dba349091c
1 changed files with 7 additions and 1 deletions
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8
nb_verify.py
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@ -55,9 +55,15 @@ parser = OptionParser(usage)
#parser.add_option("-i","--id", dest="id", help="id of the netbeacon message processed") #parser.add_option("-i","--id", dest="id", help="id of the netbeacon message processed")
parser.add_option("-t","--timedelta",dest="timedelta", action='store_true', help="show timedelta") parser.add_option("-t","--timedelta",dest="timedelta", action='store_true', help="show timedelta")
parser.add_option("-s","--storeseq", dest="storeseq", action='store_true', help="store sequence and validate sequence") parser.add_option("-s","--storeseq", dest="storeseq", action='store_true', help="store sequence and validate sequence")
parser.add_option("-p","--psk", dest="psk", help="pre-shared key used by the HMAC-SHA1 (default: netbeacon)")
(options, args) = parser.parse_args() (options, args) = parser.parse_args()
if options.psk:
psk = options.psk
else:
psk = "netbeacon"
if options.storeseq: if options.storeseq:
import shelve import shelve
s = shelve.open("netbeacon.seq") s = shelve.open("netbeacon.seq")
@ -68,7 +74,7 @@ for line in sys.stdin:
m = nbparse(message=line) m = nbparse(message=line)
print m['hmac'] print m['hmac']
message = m['header']+";"+str(m['epoch'])+";"+str(m['sequence'])+";" message = m['header']+";"+str(m['epoch'])+";"+str(m['sequence'])+";"
if m['hmac'] == nbsign(message=message): if m['hmac'] == nbsign(message=message, psk=psk):
print "valid signature for "+message print "valid signature for "+message
if options.timedelta: if options.timedelta:
timedelta = deltafromnow(epoch=m['epoch']) timedelta = deltafromnow(epoch=m['epoch'])