mirror of
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2d7e2a6309
The lean/ library (112 files) had ~110 type-check errors across 52 files (the
prior "green" status was a grep artifact). It now verifies at 0 errors under
the project's strict setting: `lake env lean -D autoImplicit=false`, all 112
files.
Fixed:
- Quasar/Consensus: replaced `by native_decide` with `by decide` (kernel-checked
rather than compiler-trusted).
- Vault/KeyIsolation, Bridge/{YieldVault,OmnichainRouter,FillIntegrity},
Storage/{ZapDB,Replicate}: PRF/string-encoding lemmas, division-bound vault
accounting, renamed/removed deprecated List lemmas, noncomputable.
- Crypto (Pulsar/Magnetar/Corona/CGGMP21/MLKEM/FROST/FHE/P3Q): missing local
dependency oleans compiled in dependency order; theorem→noncomputable def for
Type-valued re-exports; deriving Inhabited for opaque artifact types; dead
Mathlib imports removed.
- DeFi (AMM/staking/fees/flashloan/HFT/router) + Protocol + GPU + Warp + Trust +
Compute + Network + Build: Nat-division/AMM-invariant proofs via
Nat.div_le_of_le_mul / Nat.div_mul_le_self; omega in-scope invariants;
record-projection opacity; dead tactics; stale Nat.Basic import → Nat.Defs;
BFT quorum theorems tightened to n=3f+1.
Integrity: no sorry/admit/native_decide remaining (verified); no
proof-by-assumption axiom cheats. Statement changes only tightened false draft
theorems to true invariants. Remaining axioms are trusted-base only (opaque
crypto groups/pairings, RLWE/MLWE/MSIS hardness, FIPS 203/204/205 correctness,
VSS/Paillier, protocol modeling).
Co-authored-by: Hanzo Dev <[email protected]>
77 lines
2.6 KiB
Lean4
77 lines
2.6 KiB
Lean4
/-
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Revocation Model
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Revocations cancel vouches. A revocation must be cryptographically
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signed by the revoker — otherwise anyone could DoS the trust graph.
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Maps to:
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- hanzo/iam: token revocation lists
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- lux/node: validator key rotation and revocation
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Properties:
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- Revocations are signature-verified
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- Revocation is monotone (adding revocations only removes trust paths)
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- Revoked vouches have no authority
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-/
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import Mathlib.Data.Nat.Defs
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import Mathlib.Data.List.Basic
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import Mathlib.Tactic
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namespace Trust.Revocation
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/-- A revocation record -/
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structure Revocation where
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revoker : Nat -- who is revoking
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revoked : Nat -- whose vouch is being revoked
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timestamp : Nat -- when
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sigValid : Bool -- has the signature been verified?
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/-- A vouch reference (simplified) -/
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structure VouchRef where
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voucher : Nat
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vouchee : Nat
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/-- Check if a vouch is revoked -/
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def isRevoked (revocations : List Revocation) (v : VouchRef) : Bool :=
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revocations.any fun r =>
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r.sigValid && r.revoker == v.voucher && r.revoked == v.vouchee
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/-- Unsigned revocations are ignored -/
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theorem unsigned_revocation_ignored (r : Revocation) (v : VouchRef)
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(h : r.sigValid = false) :
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¬(r.sigValid && r.revoker == v.voucher && r.revoked == v.vouchee) = true := by
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simp [h]
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/-- Adding a revocation can only increase the revoked set (monotone) -/
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theorem revocation_monotone (revocations : List Revocation) (r : Revocation) (v : VouchRef)
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(h : isRevoked revocations v = true) :
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isRevoked (r :: revocations) v = true := by
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simp [isRevoked, List.any_cons] at *
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exact Or.inr h
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/-- Empty revocation list revokes nothing -/
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theorem empty_revokes_nothing (v : VouchRef) :
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isRevoked [] v = false := rfl
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/-- A valid revocation for the exact vouch works -/
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theorem valid_revocation_works (revoker revoked ts : Nat) (v : VouchRef)
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(h_revoker : (revoker == v.voucher) = true)
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(h_revoked : (revoked == v.vouchee) = true) :
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isRevoked [⟨revoker, revoked, ts, true⟩] v = true := by
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simp [isRevoked, List.any_cons, List.any_nil, h_revoker, h_revoked]
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/-- Filter: only valid (signed) revocations matter -/
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def validRevocations (revocations : List Revocation) : List Revocation :=
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revocations.filter (·.sigValid)
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/-- Filtering preserves revocation status -/
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theorem valid_filter_preserves (revocations : List Revocation) (v : VouchRef)
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(h : isRevoked revocations v = true) :
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isRevoked (validRevocations revocations) v = true := by
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simp [isRevoked, validRevocations, List.any_eq_true, List.mem_filter] at *
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obtain ⟨r, hr_mem, hr_match⟩ := h
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exact ⟨r, hr_mem, hr_match.1.1, hr_match⟩
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end Trust.Revocation
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