feat(disclosure)!: migrate to ECDH on-circuit encryption (circuits v08.0)#13
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….8.0)
The disclosure.circom circuit now encrypts selected note fields inside the
proof using ECDH over Baby Jubjub instead of revealing them as plaintext
public signals. Only the registered auditor (holding sk_A) can decrypt:
shared = sk_A · epk
plaintext_i = enc_i - Poseidon(shared.x, shared.y, i) mod BN254_P
BREAKING CHANGES:
- generateDisclosureProof() requires three new parameters:
auditorPkX: bigint, auditorPkY: bigint, r: bigint (ephemeral scalar)
- DisclosureProofOutput.revealedData removed; replaced by encryptedData:
{ epkX, epkY, encValue, encAssetId, encOwnerHash, commitment }
- Public signal count: 4 → 8
[epk_x, epk_y, enc_value, enc_asset_id, enc_owner_hash,
commitment, auditor_pk_x, auditor_pk_y]
- circomlibjs (off-circuit Poseidon owner hash) removed from proof gen
Bump @orbinum/circuits 0.7.0 → 0.8.0.
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The disclosure.circom circuit now encrypts selected note fields inside the proof using ECDH over Baby Jubjub instead of revealing them as plaintext public signals. Only the registered auditor (holding sk_A) can decrypt:
shared = sk_A · epk
plaintext_i = enc_i - Poseidon(shared.x, shared.y, i) mod BN254_P
BREAKING CHANGES:
Bump @orbinum/circuits 0.7.0 → 0.8.0.