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theory.py
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theory.py
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"""Handles theory creation"""
def generate_theory(intent, surv, survUS, wire, radio, target, targetUS, receive, sent, rep_le, consent, tres):
"""
Generates the SPASS theory
Args:
intent: intentional acquisition?
surv: surveillance devices is being used?
survUS: installed/used in the US for monitoring purposes?
wire: wire communication is being surveiled?
radio: radio communication is being surveiled?
target: the person is the target (intentionally)?
targetUS: the target is a us person?
receive: the communication was received in the US?
sent: the communication was sent from the US?
rep_le: is there a reasonable expectation of privacy and warrant for law enforcement?
consent: all parties have given consent to be surveiled?
tres: the communication relates to computer trespassers
"""
theory = SPASS_HEADER
theory += SPASS_FIXED_THEORY
theory += ""
if intent:
theory += "formula(Intentional(Acquisition)).\n"
else:
theory += "formula(not(Intentional(Acquisition))).\n"
if surv:
theory += "formula(Surv(Device)).\n"
else:
theory += "formula(not(Surv(Device))).\n"
if survUS:
theory += "formula(Surv_US(Device)).\n"
else:
theory += "formula(not(Surv_US(Device))).\n"
if wire:
theory += "formula(Wire(Contents)).\n"
else:
theory += "formula(not(Wire(Contents))).\n"
if radio:
theory += "formula(Radio(Contents)).\n"
else:
theory += "formula(not(Radio(Contents))).\n"
if target:
theory += "formula(Target(Person)).\n"
else:
theory += "formula(not(Target(Person))).\n"
if targetUS:
theory += "formula(USP(Person)).\n"
else:
theory += "formula(not(USP(Person))).\n"
if receive:
theory += "formula(ReceiveUS(Contents)).\n"
else:
theory += "formula(not(ReceiveUS(Contents))).\n"
if sent:
theory += "formula(SentUS(Contents)).\n"
else:
theory += "formula(not(SentUS(Contents))).\n"
if rep_le:
theory += "formula(REP_LE(Person)).\n"
else:
theory += "formula(not(REP_LE(Person))).\n"
if consent:
theory += "formula(Consent).\n"
else:
theory += "formula(not(Consent)).\n"
if tres:
theory += "formula(Tres(Contents)).\n"
else:
theory += "formula(not(Tres(Contents))).\n"
theory += SPASS_CONJECTURE
return theory
SPASS_HEADER = """
begin_problem(fisa).
list_of_descriptions.
name({*Law Security Logic Project 2*}).
author({*Gabriel Dos Santos (gnd6), Alice Ao (ava26) and Ben M (bm746)*}).
status(unsatisfiable).
description({*Verifying FISA*}).
end_of_list.
list_of_symbols.
functions[
(Person, 0),
(Contents, 0),
(Device, 0),
(Acquisition, 0)
].
predicates[
(Intentional, 1), % determine whether the acquisition is intentional
(Surv, 1), % determine whether Device is a Surveillance Device
(Surv_US, 1), % determines whether device was installed/used for monitoring purposes in the U.S.
(USP, 1), % determine whether the the target is a US Person
(Target, 1), % determine the person is the target
(Wire, 1), % determine whether communication via wire
(Radio, 1), % determine whether communication via radio
(SentUS, 1), % determine whether communication sent from the US
(ReceiveUS, 1), % determine whether communication received in the US
(REP_LE, 1), % determine whether reasonable expectation of privacy for communication
(Consent, 0), % determine whether any party have given consent
(Tres, 1), % determine whether the communication is computer tresspassing
(ElectronicSurveillance, 0) % determine whether inputs lead to electronic surveilance
].
end_of_list.
"""
SPASS_FIXED_THEORY = """
list_of_formulae(axioms).
% FISA S 1801 f1
formula(
implies(
and(
Surv(Device), USP(Person), Target(Person), REP_LE(Person),
or(Wire(Contents), Radio(Contents)),
or(SentUS(Contents), ReceiveUS(Contents))
),
ElectronicSurveillance
)
).
% FISA S 1801 f2
formula(
implies(
and(
Surv(Device),
Wire(Contents),
or(SentUS(Contents), ReceiveUS(Contents)),
not(Consent),
Surv_US(Device), %Acquisition
not(Tres(Contents))
),
ElectronicSurveillance
)
).
% FISA S 1801 f3
formula(
implies(
and(
Intentional(Acquisition),
Surv(Device),
Radio(Contents),
REP_LE(Person),
SentUS(Contents), ReceiveUS(Contents)
),
ElectronicSurveillance
)
).
% FISA S 1801 f4
formula(
implies(
and(
Surv_US(Device),
Surv(Device),
not(or(Radio(Contents), Wire(Contents))),
REP_LE(Person)
),
ElectronicSurveillance
)
).
"""
SPASS_CONJECTURE = """
end_of_list.
list_of_formulae(conjectures).
formula(ElectronicSurveillance).
end_of_list.
end_problem.
"""