[Retracted] A Novel Variable Pseudonym Scheme for Preserving Privacy User Location in 5G Networks

Algorithm 5

5G security and privacy.

(1)	new VRNT1a: bitstring; new VRNT2a: bitstring;
(2)	new VRNT1b: bitstring; new VRNT2b:
(3)	bitstring;
(4)	(
(5)	!MS (A, choice[VRNT1a, VRNT1b]) |
(6)	!MS (B, choice[VRNT1b, VRNT1a]) |
(7)	!SN (choice[A, B]))
(8)	-- Observational equivalence
(9)Initial clauses:
(10)	Clause 0: v_31 <> true && attacker2(v_31, true)
(11)	&& attacker2(@ mayfail_32, @ mayfail_33) ->
(12)	attacker2(false, @mayfail_33)
(13)	(The attacker applies function &&.)
(14)	Clause 1: v_37 <> true && attacker2(true, v_37)
(15)	&& attacker2(@mayfail_36, @mayfail_38) ->
(16)	attacker2(@mayfail_36, false)
(17)	(The attacker applies function &&.)
(18)	RESULT Observational equivalence is true (bad
(19)	not derivable).