def createWithDataSignBlob(blob, deviceKey=None):
keybag = tlvToDict(blob)
kb = Keybag(keybag["DATA"])
kb.deviceKey = deviceKey
if len(keybag.get("SIGN", "")):
hmackey = AESUnwrap(deviceKey, kb.attrs["HMCK"])
#hmac key and data are swapped (on purpose or by mistake ?)
sigcheck = hmac.new(keybag["DATA"], hmackey, hashlib.sha1).digest()
if sigcheck == keybag.get("SIGN", ""):
print "Keybag: SIGN check OK"
else:
print "Keybag: SIGN check FAIL"
return kb
def createWithDataSignBlob(blob, deviceKey=None):
keybag = tlvToDict(blob)
kb = Keybag(keybag.get("DATA", ""))
kb.deviceKey = deviceKey
kb.KeyBagKeys = blob
kb.unlockAlwaysAccessible()
if len(keybag.get("SIGN", "")):
hmackey = AESUnwrap(deviceKey, kb.attrs["HMCK"])
#hmac key and data are swapped (on purpose or by mistake ?)
sigcheck = hmac.new(keybag["DATA"], hmackey, sha1).digest()
if sigcheck != keybag.get("SIGN", ""):
print "Keybag: SIGN check FAIL"
return kb
def createWithDataSignBlob(blob, deviceKey=None):
keybag = tlvToDict(blob)
kb = Keybag(keybag.get("DATA", ""))
kb.deviceKey = deviceKey
kb.KeyBagKeys = blob
kb.unlockAlwaysAccessible()
if len(keybag.get("SIGN", "")):
hmackey = AESUnwrap(deviceKey, kb.attrs["HMCK"])
# hmac key and data are swapped (on purpose or by mistake ?)
sigcheck = hmac.new(keybag["DATA"], hmackey, sha1).digest()
if sigcheck != keybag.get("SIGN", ""):
print "Keybag: SIGN check FAIL"
return kb
def createWithDataSignBlob(blob, deviceKey=None):
keybag = tlvToDict(blob)
kb = Keybag(keybag["DATA"])
kb.deviceKey = deviceKey
if len(keybag.get("SIGN", "")):
hmackey = AESUnwrap(deviceKey, kb.attrs["HMCK"])
#hmac key and data are swapped (on purpose or by mistake ?)
sigcheck = hmac.new(keybag["DATA"], hmackey, hashlib.sha1).digest()
if sigcheck == keybag.get("SIGN", ""):
print "Keybag: SIGN check OK"
else:
print "Keybag: SIGN check FAIL"
return kb
