Take the live-math cockpit down to the level of the Swiss Post crypto-primitives
class structure. The shuffle proof is no longer one line — you can now watch it
being constructed:
- Pedersen matrix commitment (CommitmentService analog): c_A = Comm(A; r),
c_{A,j} = h^{r_j} Π g_i^{A_ij}, emitted from CommitMatrix.
- All five Bayer-Groth sub-arguments, mirroring the *ArgumentService classes:
ShuffleArgument (composition + x,y,z challenges), ProductArgument,
HadamardArgument (entrywise product), ZeroArgument (bilinear star-map),
SingleValueProductArgument, MultiExponentiationArgument — each emits its
defining relation as LaTeX with live dimensions.
- Partial decryption + decryption proof (DecryptionProofService analog):
φ'_i = φ_i·γ_i^{-sk} with the ZK proof that log_g(pk) = log_γ(γ^sk).
New trace.KindArgument. Low-level Commit stays uninstrumented (called in
verification too — would flood the stream); CommitMatrix is the semantic step.
Test: a 6-voter ceremony (N=6 → 2×3 shuffle matrix, so m>1 and the full argument
tree runs) captures 345 live events across 8 kinds, and asserts all five named
sub-arguments appear.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The running cryptography now narrates itself. Each headline operation emits a
trace.Event carrying its LaTeX notation plus the actual runtime values, the
instant it executes:
- Ed25519 signature on every inter-party message (envelope.Seal)
- X25519 ECDH key agreement for confidential card delivery (NewSecureChannel)
- ElGamal ballot encryption E1 = (g^r, pk^r·m) with the real r (castBallot)
- Fiat-Shamir challenge e = H(...) mod q (Schnorr proof)
- Bayer-Groth verifiable shuffle C' = {ReEnc_pk(C_π(i))} with N (mix-net)
Ceremony phases set trace phase/party context so events are attributed to the
acting stakeholder and phase. Instrumentation is behind the enabled-check, so
normal runs pay nothing.
Test: a full traced ceremony captures 184 live events across all five headline
kinds, each with non-empty LaTeX and live values, correctly phase/party-tagged.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
