/usr/lib/python3/dist-packages/pyotp/hotp.py is in python3-pyotp 2.2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | from __future__ import absolute_import, division, print_function, unicode_literals
from . import utils
from .otp import OTP
from .compat import str
class HOTP(OTP):
def at(self, count):
"""
Generates the OTP for the given count
@param [Integer] count counter
@returns [Integer] OTP
"""
return self.generate_otp(count)
def verify(self, otp, counter):
"""
Verifies the OTP passed in against the current time OTP
@param [String/Integer] otp the OTP to check against
@param [Integer] counter the counter of the OTP
"""
return utils.strings_equal(str(otp), str(self.at(counter)))
def provisioning_uri(self, name, initial_count=0, issuer_name=None):
"""
Returns the provisioning URI for the OTP
This can then be encoded in a QR Code and used
to provision the Google Authenticator app
@param [String] name of the account
@param [Integer] initial_count starting counter value, defaults to 0
@param [String] the name of the OTP issuer; this will be the
organization title of the OTP entry in Authenticator
@return [String] provisioning uri
"""
return utils.build_uri(
self.secret,
name,
initial_count=initial_count,
issuer_name=issuer_name,
algorithm=self.digest().name,
digits=self.digits
)
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