draft light encryption method

src/taco.ts

@@ -1,4 +1,8 @@
-import { Ciphertext, ferveoEncrypt } from '@nucypher/nucypher-core';
+import {
+ Ciphertext,
+ DkgPublicKey,
+ ferveoEncrypt,
+} from '@nucypher/nucypher-core';
 import { ethers } from 'ethers';
 
 import { ThresholdDecrypter } from './characters/cbd-recipient';
@@ -9,7 +13,10 @@ import { toBytes } from './utils';
 export interface TacoMessageKit {
  ciphertext: Ciphertext;
  aad: Uint8Array;
+ // TODO: How do we get rid of these two fields? We need them for decrypting
+ // We ritualId in order to fetch the DKG participants and create DecryptionRequests for them
  ritualId: number;
+ // We need to know the threshold in order to create DecryptionRequests
  threshold: number;
 }
 
@@ -20,17 +27,30 @@ export const encrypt = async (
  ritualId: number
 ): Promise<TacoMessageKit> => {
  const dkgRitual = await DkgClient.getFinalizedRitual(web3Provider, ritualId);
- const aad = conditions.asAad();
- const ciphertext = ferveoEncrypt(
- toBytes(message),
- aad,
- dkgRitual.dkgPublicKey
+ return await encryptLight(
+ message,
+ conditions,
+ dkgRitual.dkgPublicKey,
+ dkgRitual.dkgParams.threshold,
+ ritualId
  );
+};
+
+export const encryptLight = async (
+ message: string,
+ conditions: ConditionExpression,
+ dkgPublicKey: DkgPublicKey,
+ // TODO: Remove these parameters after fixing TacoMessageKit
+ threshold: number,
+ ritualId: number
+): Promise<TacoMessageKit> => {
+ const aad = conditions.asAad();
+ const ciphertext = ferveoEncrypt(toBytes(message), aad, dkgPublicKey);
  return {
  ciphertext,
  aad,
+ threshold,
  ritualId,
- threshold: dkgRitual.dkgParams.threshold,
  };
 };
 
@@ -45,9 +65,10 @@ export const decrypt = async (
  messageKit.threshold
  );
  const condExpr = ConditionExpression.fromAad(messageKit.aad);
- // TODO: Need web3Provider to fetch participants from Coordinator to make decryption requests.
- // Should we put them into the message kit instead?
- // Consider case where participants are changing over time. Is that an issue we should consider now?
+ // TODO: We need web3Provider to fetch participants from Coordinator to make decryption requests.
+ // Removing this dependency is tied to release of ThresholdMessageKit
+ // Blocked by changes to nucypher-core and nucypher:
+ // https://github.com/nucypher/nucypher/pull/3194
  return decrypter.retrieveAndDecrypt(
  web3Provider,
  condExpr,
@@ -57,5 +78,6 @@ export const decrypt = async (
 
 export const taco = {
  encrypt,
+ encryptLight,
  decrypt,
 };

test/unit/taco.test.ts

@@ -36,7 +36,6 @@ const ownsNFT = new ERC721Ownership({
 });
 const conditionExpr = new ConditionExpression(ownsNFT);
 const variant = FerveoVariant.precomputed;
-// const ritualId = 0;
 const message = 'this is a secret';
 
 describe('taco', () => {