Verify Always Matches is ok and sound
Cedar.Thm.verifyAlwaysMatches_is_ok_and_sound
Plain-language statement
Concrete version of verifyAlwaysMatches_is_sound.
Exact Lean statement
theorem verifyAlwaysMatches_is_ok_and_sound {p p' : Policy} {Γ : TypeEnv} :
Γ.WellFormed →
wellTypedPolicy p Γ = .ok p' →
∃ asserts,
verifyAlwaysMatches p' (SymEnv.ofEnv Γ) = .ok asserts ∧
(SymEnv.ofEnv Γ ⊭ asserts →
∀ env : Env,
InstanceOfWellFormedEnvironment env.request env.entities Γ →
env.StronglyWellFormedForPolicy p' →
evaluate p.toExpr env.request env.entities = .ok (.prim (.bool true)))Formal artifact
Lean source
theorem verifyAlwaysMatches_is_ok_and_sound {p p' : Policy} {Γ : TypeEnv} : Γ.WellFormed → wellTypedPolicy p Γ = .ok p' → ∃ asserts, verifyAlwaysMatches p' (SymEnv.ofEnv Γ) = .ok asserts ∧ (SymEnv.ofEnv Γ ⊭ asserts → ∀ env : Env, InstanceOfWellFormedEnvironment env.request env.entities Γ → env.StronglyWellFormedForPolicy p' → evaluate p.toExpr env.request env.entities = .ok (.prim (.bool true))):= by intros hwf hwt have hwf_εnv := ofEnv_swf_for_policy hwf hwt have ⟨asserts, hok⟩ := verifyAlwaysMatches_is_ok hwf hwt exists asserts simp only [hok, true_and] intros hunsat env hinst hwf_env simp only [wellTypedPolicy_preserves_evaluation hinst hwt] have := verifyEvaluate_is_sound verifyAlwaysMatches_wbeq hwf_εnv hok hunsat env simp [beq_iff_eq] at this apply this _ hwf_env exact ofEnv_soundness hwf_env.1 hinst- Project
- Cedar Specification
- License
- Apache-2.0
- Commit
- 3f093947b8ae
- Source
- cedar-lean/Cedar/Thm/WellTypedVerification.lean:94-115
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Person-level attribution pending.