def _fixsig(self, cert):
subject = 'CN=' + subject_from_certificate(cert)
if subject in FIXSIG: # Set unused bits in signature to 0
der = cert.public_bytes(Encoding.DER)
der = der[:-257] + b'\x00' + der[-256:]
cert = certificate_from_der(der)
return cert
def _fixsig(self, cert):
subject = 'CN=' + subject_from_certificate(cert)
if subject in FIXSIG: # Set unused bits in signature to 0
der = list(cert.public_bytes(Encoding.DER))
der[-257] = chr(0)
cert = certificate_from_der(der)
return cert
def _fixsig(self, cert):
subject = 'CN=' + subject_from_certificate(cert)
if subject in FIXSIG: # Set unused bits in signature to 0
der = list(cert.public_bytes(Encoding.DER))
der[-257] = b'\x00'
cert = certificate_from_der(der)
return cert
def __init__(self, app_param, chal_param, data):
self.app_param = app_param
self.chal_param = chal_param
self.data = data
if byte2int(data[0]) != 0x05:
raise ValueError("Invalid data: %r" % (data,))
data = data[1:]
self.pub_key = data[:self.PUBKEY_LEN]
data = data[self.PUBKEY_LEN:]
kh_len = byte2int(data[0])
data = data[1:]
self.key_handle = data[:kh_len]
data = data[kh_len:]
self.certificate = self._fixsig(certificate_from_der(data))
self.signature = data[len(self.certificate.public_bytes(Encoding.DER)):]
def __init__(self, app_param, chal_param, data):
self.app_param = app_param
self.chal_param = chal_param
self.data = data
if byte2int(data[0]) != 0x05:
raise ValueError("Invalid data: %r" % (data,))
data = data[1:]
self.pub_key = data[:self.PUBKEY_LEN]
data = data[self.PUBKEY_LEN:]
kh_len = byte2int(data[0])
data = data[1:]
self.key_handle = data[:kh_len]
data = data[kh_len:]
self.certificate = self._fixsig(certificate_from_der(data))
self.signature = data[len(self.certificate.public_bytes(Encoding.DER)):]
