ts-mls/dist/test/scenario/grease.test.js

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import { createGroup, joinGroup } from "../../src/clientState";
import { createCommit } from "../../src/createCommit";
import { emptyPskIndex } from "../../src/pskIndex";
import { ciphersuites, getCiphersuiteFromName, getCiphersuiteImpl } from "../../src/crypto/ciphersuite";
import { generateKeyPackage } from "../../src/keyPackage";
import { checkHpkeKeysMatch } from "../crypto/keyMatch";
import { testEveryoneCanMessageEveryone } from "./common";
import { defaultLifetime } from "../../src/lifetime";
import { defaultCapabilities } from "../../src/defaultCapabilities";
import { defaultGreaseConfig, greaseExtensions } from "../../src/grease";
import { extensionTypeToNumber } from "../../src/extension";
for (const cs of Object.keys(ciphersuites)) {
    test(`Grease ${cs}`, async () => {
        await greaseTest(cs);
    });
}
async function greaseTest(cipherSuite) {
    const impl = await getCiphersuiteImpl(getCiphersuiteFromName(cipherSuite));
    const aliceCredential = { credentialType: "basic", identity: new TextEncoder().encode("alice") };
    const greased = greaseExtensions(defaultGreaseConfig);
    const caps = {
        ...defaultCapabilities(),
        extensions: greased.map((n) => extensionTypeToNumber(n.extensionType)),
    };
    const alice = await generateKeyPackage(aliceCredential, caps, defaultLifetime, greased, impl);
    const groupId = new TextEncoder().encode("group1");
    let aliceGroup = await createGroup(groupId, alice.publicPackage, alice.privatePackage, [], impl);
    const bobCredential = { credentialType: "basic", identity: new TextEncoder().encode("bob") };
    const bob = await generateKeyPackage(bobCredential, defaultCapabilities(), defaultLifetime, [], impl);
    const addBobProposal = {
        proposalType: "add",
        add: {
            keyPackage: bob.publicPackage,
        },
    };
    const addBobCommitResult = await createCommit(aliceGroup, emptyPskIndex, false, [addBobProposal], impl);
    aliceGroup = addBobCommitResult.newState;
    let bobGroup = await joinGroup(addBobCommitResult.welcome, bob.publicPackage, bob.privatePackage, emptyPskIndex, impl, aliceGroup.ratchetTree);
    expect(bobGroup.keySchedule.epochAuthenticator).toStrictEqual(aliceGroup.keySchedule.epochAuthenticator);
    await checkHpkeKeysMatch(aliceGroup, impl);
    await checkHpkeKeysMatch(bobGroup, impl);
    await testEveryoneCanMessageEveryone([aliceGroup, bobGroup], impl);
}
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