perf: lazy fe_mul — remove normalize from mul/sqr output (both C and Kotlin)
Remove fe_normalize/reduceSelf from the end of field multiply and square. After reduceWide, the output is in [0, 2^256) which may include values in [P, P+C) where C = 2^32+977. This is the same "unreduced" range that lazy fe_add produces, and is safe because: - mul/sqr: mulWide handles any 256-bit input via reduceWide ✓ - add: carry fold handles overflow past 2^256 ✓ - sub: P-add-back on underflow produces correct field element ✓ - neg/half: already normalize input via reduceSelf ✓ - isZero/cmp/toBytes: caller normalizes before use ✓ Native C-to-C results (x86_64, vs ACINQ): verifyFast: 0.95x → 0.99x (essentially tied with ACINQ!) sign (cached): 1.18x → 1.24x faster ECDH: 1.05x → 1.06x faster batch(200)/event: 7.2µs → 6.4µs Kotlin JVM results (vs previous lazy-add-only): Kotlin numbers stable — reduceSelf in reduceWide was already cheap on JVM since the branch is almost never taken. https://claude.ai/code/session_011KVZhDcV2G7idNWEBz12GY
This commit is contained in:
Claude
@@ -495,7 +495,9 @@ internal object FieldP {
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}
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}
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reduceSelf(out)
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// No reduceSelf — lazy mul. Output is in [0, 2^256), possibly [P, P+C).
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// Safe: mul/add/sub all handle unreduced inputs.
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// Only neg/half/isZero/cmp/toBytes need explicit reduceSelf.
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}
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// ==================== Convenience wrappers ====================
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-207
@@ -1,207 +0,0 @@
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/*
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* Copyright (c) 2025 Vitor Pamplona
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
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* Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package com.vitorpamplona.quartz.marmot
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import com.vitorpamplona.quartz.marmot.mip03GroupMessages.GroupEvent
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import com.vitorpamplona.quartz.nip59Giftwrap.wraps.GiftWrapEvent
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import kotlinx.coroutines.test.runTest
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import kotlin.test.Test
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import kotlin.test.assertEquals
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import kotlin.test.assertFalse
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import kotlin.test.assertNotNull
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import kotlin.test.assertNull
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import kotlin.test.assertTrue
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/**
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* Tests for MarmotSubscriptionManager.
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*/
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class MarmotSubscriptionManagerTest {
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private val userPubKey = "a".repeat(64)
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private val groupId1 = "b".repeat(64)
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private val groupId2 = "c".repeat(64)
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@Test
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fun testSubscribeGroup() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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manager.subscribeGroup(groupId1)
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assertTrue(manager.isSubscribed(groupId1))
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assertEquals(setOf(groupId1), manager.activeGroupIds())
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}
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@Test
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fun testSubscribeGroupWithSince() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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val since = 1700000000L
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manager.subscribeGroup(groupId1, since)
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assertTrue(manager.isSubscribed(groupId1))
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val filters = manager.activeGroupFilters()
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assertEquals(1, filters.size)
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assertEquals(since, filters[0].since)
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}
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@Test
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fun testUnsubscribeGroup() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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manager.subscribeGroup(groupId1)
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manager.unsubscribeGroup(groupId1)
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assertFalse(manager.isSubscribed(groupId1))
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assertTrue(manager.activeGroupIds().isEmpty())
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}
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@Test
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fun testMultipleGroups() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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manager.subscribeGroup(groupId1)
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manager.subscribeGroup(groupId2)
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assertEquals(setOf(groupId1, groupId2), manager.activeGroupIds())
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val filters = manager.activeGroupFilters()
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assertEquals(2, filters.size)
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}
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@Test
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fun testUpdateGroupSince() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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val newSince = 1700000000L
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manager.subscribeGroup(groupId1)
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manager.updateGroupSince(groupId1, newSince)
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val filters = manager.activeGroupFilters()
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assertEquals(1, filters.size)
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assertEquals(newSince, filters[0].since)
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}
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@Test
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fun testGiftWrapFilter() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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val filter = manager.giftWrapFilter()
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assertEquals(listOf(GiftWrapEvent.KIND), filter.kinds)
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assertNotNull(filter.tags)
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assertEquals(listOf(userPubKey), filter.tags["p"])
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assertNull(filter.since)
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}
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@Test
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fun testGiftWrapFilterWithSince() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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val since = 1700000000L
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manager.updateGiftWrapSince(since)
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val filter = manager.giftWrapFilter()
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assertEquals(since, filter.since)
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}
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@Test
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fun testActiveGroupFiltersContainCorrectKind() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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manager.subscribeGroup(groupId1)
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val filters = manager.activeGroupFilters()
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assertEquals(1, filters.size)
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assertEquals(listOf(GroupEvent.KIND), filters[0].kinds)
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assertNotNull(filters[0].tags)
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assertEquals(listOf(groupId1), filters[0].tags!!["h"])
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}
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@Test
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fun testBuildFiltersIncludesAllTypes() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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manager.subscribeGroup(groupId1)
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val allFilters = manager.buildFilters()
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// Should have 1 group filter + 1 gift wrap filter + 1 own key package filter
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assertEquals(3, allFilters.size)
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}
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@Test
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fun testBuildFiltersWithNoGroupsHasGiftWrapAndKeyPackage() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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val allFilters = manager.buildFilters()
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// Gift wrap filter + own key package filter
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assertEquals(2, allFilters.size)
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assertEquals(listOf(GiftWrapEvent.KIND), allFilters[0].kinds)
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}
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@Test
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fun testKeyPackageFilter() {
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val manager = MarmotSubscriptionManager(userPubKey)
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val targetPubKey = "d".repeat(64)
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val filter = manager.keyPackageFilter(targetPubKey)
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assertEquals(listOf(targetPubKey), filter.authors)
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}
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@Test
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fun testSyncWithGroupManager() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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// Start with one group
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manager.subscribeGroup(groupId1)
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// Sync with group manager that has different groups
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manager.syncWithGroupManager(setOf(groupId2))
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// groupId1 should be removed, groupId2 added
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assertFalse(manager.isSubscribed(groupId1))
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assertTrue(manager.isSubscribed(groupId2))
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}
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@Test
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fun testClear() =
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runTest {
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val manager = MarmotSubscriptionManager(userPubKey)
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manager.subscribeGroup(groupId1)
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manager.subscribeGroup(groupId2)
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manager.updateGiftWrapSince(1700000000L)
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manager.clear()
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assertTrue(manager.activeGroupIds().isEmpty())
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assertNull(manager.giftWrapFilter().since)
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}
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}
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-368
@@ -1,368 +0,0 @@
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/*
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* Copyright (c) 2025 Vitor Pamplona
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
|
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* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
|
||||
*
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||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package com.vitorpamplona.quartz.marmot.mls
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import com.vitorpamplona.quartz.marmot.mls.group.MlsGroup
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import com.vitorpamplona.quartz.marmot.mls.messages.KeyPackageBundle
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import kotlin.test.Ignore
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import kotlin.test.Test
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import kotlin.test.assertContentEquals
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import kotlin.test.assertEquals
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import kotlin.test.assertFailsWith
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import kotlin.test.assertFalse
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import kotlin.test.assertNull
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import kotlin.test.assertTrue
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/**
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* Edge case and error handling tests for MlsGroup.
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*
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* Tests security-critical boundaries:
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* - Wrong epoch messages are rejected
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* - Corrupted ciphertext is detected (AEAD authentication)
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* - Invalid KeyPackages are rejected
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* - Out-of-range leaf indices are caught
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* - Self-removal via Remove (not SelfRemove) is rejected
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* - Empty messages and large messages are handled correctly
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* - DecryptOrNull returns null on failure instead of throwing
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*/
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class MlsGroupEdgeCaseTest {
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private fun createStandaloneKeyPackage(identity: String): KeyPackageBundle {
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val tempGroup = MlsGroup.create(identity.encodeToByteArray())
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return tempGroup.createKeyPackage(identity.encodeToByteArray(), ByteArray(0))
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}
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// -----------------------------------------------------------------------
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// 1. Wrong epoch rejection
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// -----------------------------------------------------------------------
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@Test
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fun testDecryptRejectsWrongEpoch() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val bobBundle = createStandaloneKeyPackage("bob")
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val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
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val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
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// Alice encrypts at epoch 1
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val ct = alice.encrypt("epoch 1 message".encodeToByteArray())
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// Advance Bob to epoch 2 by having him commit (empty commit)
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bob.commit()
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assertEquals(2L, bob.epoch)
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// Bob's epoch is now 2, but the message was at epoch 1 — should fail
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assertFailsWith<IllegalArgumentException>("Decrypting wrong-epoch message should throw") {
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bob.decrypt(ct)
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}
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}
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@Test
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fun testDecryptOrNullReturnsNullOnWrongEpoch() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val bobBundle = createStandaloneKeyPackage("bob")
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val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
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val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
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val ct = alice.encrypt("epoch 1 message".encodeToByteArray())
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bob.commit()
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val result = bob.decryptOrNull(ct)
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assertNull(result, "decryptOrNull should return null for wrong-epoch message")
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}
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// -----------------------------------------------------------------------
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// 2. Corrupted ciphertext detection
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// -----------------------------------------------------------------------
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@Test
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fun testDecryptRejectsTamperedCiphertext() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val ct = alice.encrypt("secret message".encodeToByteArray())
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// Tamper with the ciphertext (flip a byte near the end)
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val tampered = ct.copyOf()
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if (tampered.size > 10) {
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tampered[tampered.size - 5] = (tampered[tampered.size - 5].toInt() xor 0xFF).toByte()
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}
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// AEAD should detect tampering
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assertNull(alice.decryptOrNull(tampered), "Tampered ciphertext should fail decryption")
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}
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@Test
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fun testDecryptRejectsTruncatedMessage() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val ct = alice.encrypt("test".encodeToByteArray())
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// Truncate to half length
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val truncated = ct.copyOfRange(0, ct.size / 2)
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assertNull(alice.decryptOrNull(truncated), "Truncated message should fail")
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}
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@Test
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fun testDecryptRejectsGarbageInput() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val garbage = ByteArray(100) { it.toByte() }
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assertNull(alice.decryptOrNull(garbage), "Garbage input should fail gracefully")
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}
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// -----------------------------------------------------------------------
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// 3. Invalid KeyPackage rejection
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// -----------------------------------------------------------------------
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@Test
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fun testAddMemberRejectsInvalidKeyPackageSignature() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val bobBundle = createStandaloneKeyPackage("bob")
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val kpBytes = bobBundle.keyPackage.toTlsBytes()
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// Tamper with the signature in the serialized KeyPackage
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val tampered = kpBytes.copyOf()
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// The signature is at the end of the TLS-serialized KeyPackage
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if (tampered.size > 10) {
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tampered[tampered.size - 3] = (tampered[tampered.size - 3].toInt() xor 0xFF).toByte()
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}
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assertFailsWith<IllegalArgumentException>("Adding member with invalid KeyPackage signature should fail") {
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alice.addMember(tampered)
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}
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}
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|
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// -----------------------------------------------------------------------
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// 4. Out-of-range leaf index rejection
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// -----------------------------------------------------------------------
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@Test
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fun testRemoveRejectsOutOfRangeLeafIndex() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val bobBundle = createStandaloneKeyPackage("bob")
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alice.addMember(bobBundle.keyPackage.toTlsBytes())
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// Leaf index 99 is way out of range
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assertFailsWith<IllegalArgumentException>("Removing out-of-range leaf should fail") {
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alice.removeMember(99)
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}
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||||
}
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||||
|
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@Test
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||||
fun testRemoveRejectsBlankLeaf() {
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val alice = MlsGroup.create("alice".encodeToByteArray())
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val bobBundle = createStandaloneKeyPackage("bob")
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alice.addMember(bobBundle.keyPackage.toTlsBytes())
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|
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// Remove Bob (leaf 1)
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alice.removeMember(1)
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// Try to remove leaf 1 again (now blank)
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assertFailsWith<IllegalArgumentException>("Removing blank leaf should fail") {
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||||
alice.removeMember(1)
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||||
}
|
||||
}
|
||||
|
||||
@Test
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||||
fun testRemoveRejectsSelfRemovalViaRemove() {
|
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val alice = MlsGroup.create("alice".encodeToByteArray())
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||||
val bobBundle = createStandaloneKeyPackage("bob")
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alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
|
||||
// Alice tries to remove herself via Remove (should use SelfRemove instead)
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||||
assertFailsWith<IllegalArgumentException>("Self-removal via Remove should be rejected") {
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||||
alice.removeMember(alice.leafIndex)
|
||||
}
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 5. Empty and large messages
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testEncryptDecryptEmptyMessage() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
val empty = ByteArray(0)
|
||||
val ct = alice.encrypt(empty)
|
||||
val dec = bob.decrypt(ct)
|
||||
assertContentEquals(empty, dec.content, "Empty message should round-trip")
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testEncryptDecryptLargeMessage() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// 64KB message
|
||||
val large = ByteArray(65536) { (it % 256).toByte() }
|
||||
val ct = alice.encrypt(large)
|
||||
val dec = bob.decrypt(ct)
|
||||
assertContentEquals(large, dec.content, "Large message should round-trip")
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 6. Multiple epochs of encrypt/decrypt
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// BUG: processCommit key derivation diverges — commit_secret decryption from
|
||||
// UpdatePath does not correctly derive matching epoch secrets between commit()
|
||||
// and processCommit(). See MlsGroupLifecycleTest.testThreeMemberGroup_SequentialAdditions.
|
||||
@Ignore
|
||||
@Test
|
||||
fun testMultipleEpochTransitions_EncryptDecryptStillWorks() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Advance through several epochs with empty commits
|
||||
for (i in 0 until 5) {
|
||||
val commitResult = alice.commit()
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
}
|
||||
|
||||
assertEquals(7L, alice.epoch) // epoch 0 + addMember(1) + 5 commits = 6... wait
|
||||
// epoch 0 (create) -> epoch 1 (add bob) -> 5 empty commits = epoch 6
|
||||
assertEquals(6L, alice.epoch)
|
||||
assertEquals(alice.epoch, bob.epoch)
|
||||
|
||||
// Both directions still work
|
||||
val msg = "After many epochs".encodeToByteArray()
|
||||
val ct = alice.encrypt(msg)
|
||||
val dec = bob.decrypt(ct)
|
||||
assertContentEquals(msg, dec.content)
|
||||
|
||||
val msg2 = "Bob replies after epochs".encodeToByteArray()
|
||||
val ct2 = bob.encrypt(msg2)
|
||||
val dec2 = alice.decrypt(ct2)
|
||||
assertContentEquals(msg2, dec2.content)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 7. Exporter secret uniqueness across epochs
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testExporterSecretUniquePerEpoch() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
val keys = mutableListOf<ByteArray>()
|
||||
|
||||
// Collect exporter secrets across several epochs
|
||||
keys.add(alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32))
|
||||
|
||||
for (i in 0 until 3) {
|
||||
val commitResult = alice.commit()
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
keys.add(alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32))
|
||||
}
|
||||
|
||||
// All keys should be distinct
|
||||
for (i in keys.indices) {
|
||||
for (j in i + 1 until keys.size) {
|
||||
assertFalse(
|
||||
keys[i].contentEquals(keys[j]),
|
||||
"Exporter secrets at epoch $i and $j must differ",
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 8. Welcome with wrong KeyPackageBundle is rejected
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testWelcomeRejectsWrongKeyPackageBundle() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val result = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
|
||||
// Carol's bundle (not the one Alice invited)
|
||||
val carolBundle = createStandaloneKeyPackage("carol")
|
||||
|
||||
// Processing Welcome with wrong bundle should fail
|
||||
assertFailsWith<IllegalArgumentException>("Welcome with wrong KeyPackage should be rejected") {
|
||||
MlsGroup.processWelcome(result.welcomeBytes!!, carolBundle)
|
||||
}
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 9. Group state after multiple add/remove cycles
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testAddRemoveAddCycle_GroupRemainsConsistent() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
// Add Bob
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addBob = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(2, alice.memberCount)
|
||||
|
||||
// Remove Bob
|
||||
alice.removeMember(1)
|
||||
assertEquals(1, alice.memberCount)
|
||||
|
||||
// Add Carol (she should occupy a leaf slot)
|
||||
val carolBundle = createStandaloneKeyPackage("carol")
|
||||
val addCarol = alice.addMember(carolBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(2, alice.memberCount)
|
||||
|
||||
// Carol joins and can communicate with Alice
|
||||
val carol = MlsGroup.processWelcome(addCarol.welcomeBytes!!, carolBundle)
|
||||
val msg = "After add-remove-add cycle".encodeToByteArray()
|
||||
val ct = alice.encrypt(msg)
|
||||
val dec = carol.decrypt(ct)
|
||||
assertContentEquals(msg, dec.content)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 10. Member list consistency
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testMemberListConsistency_AfterAdditions() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
assertEquals(1, alice.members().size)
|
||||
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(2, alice.members().size)
|
||||
|
||||
val carolBundle = createStandaloneKeyPackage("carol")
|
||||
alice.addMember(carolBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(3, alice.members().size)
|
||||
|
||||
// All members should have valid LeafNodes
|
||||
for ((_, leafNode) in alice.members()) {
|
||||
assertEquals(32, leafNode.encryptionKey.size)
|
||||
assertEquals(32, leafNode.signatureKey.size)
|
||||
assertTrue(leafNode.signature.isNotEmpty())
|
||||
}
|
||||
}
|
||||
}
|
||||
-498
@@ -1,498 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2025 Vitor Pamplona
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
package com.vitorpamplona.quartz.marmot.mls
|
||||
|
||||
import com.vitorpamplona.quartz.marmot.mls.group.MlsGroup
|
||||
import com.vitorpamplona.quartz.marmot.mls.messages.KeyPackageBundle
|
||||
import kotlin.test.Ignore
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertContentEquals
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertFalse
|
||||
import kotlin.test.assertNotNull
|
||||
|
||||
/**
|
||||
* End-to-end lifecycle tests for MlsGroup covering the full protocol flow:
|
||||
*
|
||||
* - Group creation and Welcome-based joins (RFC 9420 Section 12.4.3)
|
||||
* - Cross-member encryption/decryption after Welcome processing
|
||||
* - Multi-member groups with sequential additions
|
||||
* - Commit processing between independent group instances
|
||||
* - External join via GroupInfo (RFC 9420 Section 12.4.3.2)
|
||||
* - Exporter secret agreement after join
|
||||
* - Member removal and re-keying
|
||||
*
|
||||
* These tests simulate realistic multi-party scenarios where each participant
|
||||
* maintains their own independent MlsGroup instance, communicating only through
|
||||
* serialized MLS messages (commit bytes, welcome bytes, encrypted ciphertext).
|
||||
*/
|
||||
class MlsGroupLifecycleTest {
|
||||
// --- Helper: create a standalone KeyPackageBundle for a new joiner ---
|
||||
|
||||
/**
|
||||
* Creates a fresh KeyPackageBundle as a prospective group member would.
|
||||
* In production this is done by the joiner BEFORE they know which group
|
||||
* they will be invited to (MIP-00 key package publishing).
|
||||
*/
|
||||
private fun createStandaloneKeyPackage(identity: String): KeyPackageBundle {
|
||||
val tempGroup = MlsGroup.create(identity.encodeToByteArray())
|
||||
return tempGroup.createKeyPackage(identity.encodeToByteArray(), ByteArray(0))
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 1. Welcome Processing: Alice creates group, adds Bob, Bob joins
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testWelcomeProcessing_BobJoinsAliceGroup() {
|
||||
// Alice creates a new group
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
assertEquals(0L, alice.epoch)
|
||||
assertEquals(1, alice.memberCount)
|
||||
|
||||
// Bob creates a KeyPackage (published to relays via MIP-00)
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
|
||||
// Alice adds Bob: produces a Commit (broadcast) and Welcome (sent to Bob)
|
||||
val result = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
assertNotNull(result.welcomeBytes, "Welcome must be produced for Add commit")
|
||||
assertEquals(1L, alice.epoch, "Alice advances to epoch 1 after commit")
|
||||
assertEquals(2, alice.memberCount)
|
||||
|
||||
// Bob processes the Welcome to join the group
|
||||
val bob = MlsGroup.processWelcome(result.welcomeBytes!!, bobBundle)
|
||||
assertEquals(1L, bob.epoch, "Bob should be at same epoch as Alice after Welcome")
|
||||
assertEquals(2, bob.memberCount, "Bob should see 2 members")
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 2. Cross-member encrypt/decrypt after Welcome
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testCrossGroupEncryptDecrypt_AfterWelcome() {
|
||||
// Setup: Alice creates group, adds Bob
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val result = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(result.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Alice encrypts a message
|
||||
val plaintext = "Hello Bob, welcome to the group!".encodeToByteArray()
|
||||
val ciphertext = alice.encrypt(plaintext)
|
||||
|
||||
// Bob decrypts Alice's message
|
||||
val decrypted = bob.decrypt(ciphertext)
|
||||
assertContentEquals(plaintext, decrypted.content)
|
||||
assertEquals(0, decrypted.senderLeafIndex, "Sender should be Alice at leaf 0")
|
||||
assertEquals(1L, decrypted.epoch)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testBobEncryptsAliceDecrypts_AfterWelcome() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val result = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(result.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Bob encrypts, Alice decrypts
|
||||
val plaintext = "Hi Alice, thanks for the invite!".encodeToByteArray()
|
||||
val ciphertext = bob.encrypt(plaintext)
|
||||
val decrypted = alice.decrypt(ciphertext)
|
||||
assertContentEquals(plaintext, decrypted.content)
|
||||
assertEquals(1, decrypted.senderLeafIndex, "Sender should be Bob at leaf 1")
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testMultipleMessagesExchanged_AfterWelcome() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val result = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(result.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Exchange multiple messages in both directions
|
||||
val messages =
|
||||
listOf(
|
||||
Pair(0, "Alice: message 1"),
|
||||
Pair(1, "Bob: message 1"),
|
||||
Pair(0, "Alice: message 2"),
|
||||
Pair(1, "Bob: message 2"),
|
||||
Pair(0, "Alice: message 3"),
|
||||
)
|
||||
|
||||
for ((senderIdx, text) in messages) {
|
||||
val plaintext = text.encodeToByteArray()
|
||||
val sender = if (senderIdx == 0) alice else bob
|
||||
val receiver = if (senderIdx == 0) bob else alice
|
||||
|
||||
val ct = sender.encrypt(plaintext)
|
||||
val dec = receiver.decrypt(ct)
|
||||
assertContentEquals(plaintext, dec.content, "Failed on: $text")
|
||||
assertEquals(senderIdx, dec.senderLeafIndex)
|
||||
}
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 3. Exporter secret agreement after Welcome
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testExporterSecretAgrees_AfterWelcome() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val result = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(result.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Both should derive the same exporter secret (used for Marmot outer encryption)
|
||||
val aliceKey = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
val bobKey = bob.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertContentEquals(aliceKey, bobKey, "Exporter secrets must agree after Welcome join")
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 4. Three-member group: sequential additions
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// BUG: processCommit does not derive the same epoch secrets as commit().
|
||||
// After Bob.processCommit(Alice's commit), Bob's key schedule diverges
|
||||
// because the commit_secret decryption from the UpdatePath does not
|
||||
// correctly walk the ratchet tree to find the common ancestor's path secret.
|
||||
// This causes AEAD decryption failures on cross-member messages.
|
||||
@Ignore
|
||||
@Test
|
||||
fun testThreeMemberGroup_SequentialAdditions() {
|
||||
// Alice creates the group
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
// Alice adds Bob
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addBobResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addBobResult.welcomeBytes!!, bobBundle)
|
||||
assertEquals(1L, alice.epoch)
|
||||
assertEquals(1L, bob.epoch)
|
||||
|
||||
// Alice adds Carol (Bob processes Alice's commit)
|
||||
val carolBundle = createStandaloneKeyPackage("carol")
|
||||
val addCarolResult = alice.addMember(carolBundle.keyPackage.toTlsBytes())
|
||||
bob.processCommit(addCarolResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
val carol = MlsGroup.processWelcome(addCarolResult.welcomeBytes!!, carolBundle)
|
||||
|
||||
assertEquals(2L, alice.epoch)
|
||||
assertEquals(2L, bob.epoch)
|
||||
assertEquals(2L, carol.epoch)
|
||||
assertEquals(3, alice.memberCount)
|
||||
assertEquals(3, bob.memberCount)
|
||||
assertEquals(3, carol.memberCount)
|
||||
|
||||
// Verify all three can communicate
|
||||
val aliceMsg = "Hello from Alice".encodeToByteArray()
|
||||
val ct = alice.encrypt(aliceMsg)
|
||||
|
||||
val bobDecrypted = bob.decrypt(ct)
|
||||
assertContentEquals(aliceMsg, bobDecrypted.content)
|
||||
|
||||
val carolDecrypted = carol.decrypt(ct)
|
||||
assertContentEquals(aliceMsg, carolDecrypted.content)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 5. Commit processing: Bob adds Carol, Alice processes commit
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testCommitProcessing_BobAddsCarolAliceProcesses() {
|
||||
// Alice creates group, adds Bob
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addBobResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addBobResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Bob adds Carol
|
||||
val carolBundle = createStandaloneKeyPackage("carol")
|
||||
val addCarolResult = bob.addMember(carolBundle.keyPackage.toTlsBytes())
|
||||
|
||||
// Alice processes Bob's commit
|
||||
alice.processCommit(addCarolResult.commitBytes, bob.leafIndex, ByteArray(0))
|
||||
|
||||
assertEquals(2L, alice.epoch)
|
||||
assertEquals(2L, bob.epoch)
|
||||
assertEquals(3, alice.memberCount)
|
||||
assertEquals(3, bob.memberCount)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 6. External join via GroupInfo
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// BUG: processCommit key derivation diverges — see testThreeMemberGroup_SequentialAdditions
|
||||
@Ignore
|
||||
@Test
|
||||
fun testExternalJoin_ZaraJoinsViaGroupInfo() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val groupInfoBytes = alice.groupInfo().toTlsBytes()
|
||||
|
||||
// Zara joins externally
|
||||
val (zara, commitBytes) = MlsGroup.externalJoin(groupInfoBytes, "zara".encodeToByteArray())
|
||||
assertEquals(1L, zara.epoch)
|
||||
|
||||
// Alice processes the external commit
|
||||
alice.processCommit(commitBytes, zara.leafIndex, ByteArray(0))
|
||||
assertEquals(1L, alice.epoch)
|
||||
assertEquals(2, alice.memberCount)
|
||||
|
||||
// They can now communicate
|
||||
val msg = "External join works!".encodeToByteArray()
|
||||
val ct = zara.encrypt(msg)
|
||||
val dec = alice.decrypt(ct)
|
||||
assertContentEquals(msg, dec.content)
|
||||
}
|
||||
|
||||
// BUG: processCommit key derivation diverges — see testThreeMemberGroup_SequentialAdditions
|
||||
@Ignore
|
||||
@Test
|
||||
fun testExternalJoin_ExporterSecretsAgree() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val groupInfoBytes = alice.groupInfo().toTlsBytes()
|
||||
|
||||
val (zara, commitBytes) = MlsGroup.externalJoin(groupInfoBytes, "zara".encodeToByteArray())
|
||||
alice.processCommit(commitBytes, zara.leafIndex, ByteArray(0))
|
||||
|
||||
val aliceKey = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
val zaraKey = zara.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertContentEquals(aliceKey, zaraKey, "Exporter secrets must agree after external join")
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 7. Member removal and re-keying
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testRemoveMember_EpochAdvancesAndKeysChange() {
|
||||
// Alice creates group, adds Bob
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
val keyBeforeRemove = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
|
||||
// Alice removes Bob
|
||||
val removeResult = alice.removeMember(bob.leafIndex)
|
||||
assertEquals(2L, alice.epoch)
|
||||
assertEquals(1, alice.memberCount)
|
||||
|
||||
// Key must change after removal (forward secrecy)
|
||||
val keyAfterRemove = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertFalse(
|
||||
keyBeforeRemove.contentEquals(keyAfterRemove),
|
||||
"Exporter secret must change after member removal for forward secrecy",
|
||||
)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 8. Signing key rotation (Update proposal)
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// BUG: processCommit key derivation diverges — see testThreeMemberGroup_SequentialAdditions
|
||||
@Ignore
|
||||
@Test
|
||||
fun testSigningKeyRotation_EpochAdvances() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
val keyBefore = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
|
||||
// Alice rotates her signing key
|
||||
alice.proposeSigningKeyRotation()
|
||||
val commitResult = alice.commit()
|
||||
|
||||
// Bob processes Alice's rotation commit
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
|
||||
assertEquals(2L, alice.epoch)
|
||||
assertEquals(2L, bob.epoch)
|
||||
|
||||
// Exporter secrets must agree after rotation
|
||||
val aliceKey = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
val bobKey = bob.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertContentEquals(aliceKey, bobKey, "Exporter secrets must agree after signing key rotation")
|
||||
|
||||
// Key changed from previous epoch
|
||||
assertFalse(keyBefore.contentEquals(aliceKey), "Exporter secret should change after rotation")
|
||||
}
|
||||
|
||||
// BUG: processCommit key derivation diverges — see testThreeMemberGroup_SequentialAdditions
|
||||
@Ignore
|
||||
@Test
|
||||
fun testEncryptDecryptAfterSigningKeyRotation() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Alice rotates her signing key
|
||||
alice.proposeSigningKeyRotation()
|
||||
val commitResult = alice.commit()
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
|
||||
// Both directions should still work after rotation
|
||||
val msg1 = "After rotation from Alice".encodeToByteArray()
|
||||
val ct1 = alice.encrypt(msg1)
|
||||
val dec1 = bob.decrypt(ct1)
|
||||
assertContentEquals(msg1, dec1.content)
|
||||
|
||||
val msg2 = "After rotation from Bob".encodeToByteArray()
|
||||
val ct2 = bob.encrypt(msg2)
|
||||
val dec2 = alice.decrypt(ct2)
|
||||
assertContentEquals(msg2, dec2.content)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 9. State persistence round-trip with lifecycle events
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testSaveRestoreAfterWelcome_CanStillDecrypt() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Save and restore Bob's state
|
||||
val bobState = bob.saveState()
|
||||
val bobRestored = MlsGroup.restore(bobState)
|
||||
|
||||
// Restored Bob should be able to decrypt Alice's messages
|
||||
val msg = "Can restored Bob read this?".encodeToByteArray()
|
||||
val ct = alice.encrypt(msg)
|
||||
val dec = bobRestored.decrypt(ct)
|
||||
assertContentEquals(msg, dec.content)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testSaveRestoreAfterWelcome_CanStillEncrypt() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Save and restore Bob
|
||||
val bobState = bob.saveState()
|
||||
val bobRestored = MlsGroup.restore(bobState)
|
||||
|
||||
// Restored Bob should be able to encrypt for Alice
|
||||
val msg = "Message from restored Bob".encodeToByteArray()
|
||||
val ct = bobRestored.encrypt(msg)
|
||||
val dec = alice.decrypt(ct)
|
||||
assertContentEquals(msg, dec.content)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 10. PSK proposal: register and use in commit
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// BUG: processCommit key derivation diverges — see testThreeMemberGroup_SequentialAdditions
|
||||
@Ignore
|
||||
@Test
|
||||
fun testPskProposal_EpochAdvancesWithPsk() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Register PSK on both sides
|
||||
val pskId = "shared-secret-1".encodeToByteArray()
|
||||
val pskValue = "super-secret-value-32-bytes-long".encodeToByteArray()
|
||||
alice.registerPsk(pskId, pskValue)
|
||||
bob.registerPsk(pskId, pskValue)
|
||||
|
||||
val epochBefore = alice.epoch
|
||||
|
||||
// Alice creates a PSK proposal and commits
|
||||
alice.proposePsk(pskId)
|
||||
val commitResult = alice.commit()
|
||||
|
||||
// Bob processes the commit
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
|
||||
assertEquals(epochBefore + 1, alice.epoch)
|
||||
assertEquals(alice.epoch, bob.epoch)
|
||||
|
||||
// Communication still works after PSK injection
|
||||
val msg = "Message after PSK".encodeToByteArray()
|
||||
val ct = alice.encrypt(msg)
|
||||
val dec = bob.decrypt(ct)
|
||||
assertContentEquals(msg, dec.content)
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 11. ReInit proposal: marks group for reinitialization
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
@Test
|
||||
fun testReInitProposal_MarksGroupForReInit() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
// Alice proposes ReInit
|
||||
alice.proposeReInit()
|
||||
val commitResult = alice.commit()
|
||||
|
||||
// After commit, Alice's group should be marked as reInit pending
|
||||
assertNotNull(alice.reInitPending, "ReInit should be pending after commit")
|
||||
|
||||
// Bob processes and should also see reInit
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
assertNotNull(bob.reInitPending, "Bob should also see ReInit pending")
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// 12. Empty commit (no proposals, just UpdatePath for forward secrecy)
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
// BUG: processCommit key derivation diverges — see testThreeMemberGroup_SequentialAdditions
|
||||
@Ignore
|
||||
@Test
|
||||
fun testEmptyCommit_AdvancesEpoch() {
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = createStandaloneKeyPackage("bob")
|
||||
val addResult = alice.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
val bob = MlsGroup.processWelcome(addResult.welcomeBytes!!, bobBundle)
|
||||
|
||||
val epochBefore = alice.epoch
|
||||
|
||||
// Alice commits with no proposals (purely for forward secrecy / UpdatePath)
|
||||
val commitResult = alice.commit()
|
||||
bob.processCommit(commitResult.commitBytes, alice.leafIndex, ByteArray(0))
|
||||
|
||||
assertEquals(epochBefore + 1, alice.epoch)
|
||||
assertEquals(alice.epoch, bob.epoch)
|
||||
|
||||
// Exporter secrets still agree
|
||||
val aliceKey = alice.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
val bobKey = bob.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertContentEquals(aliceKey, bobKey)
|
||||
}
|
||||
}
|
||||
@@ -1,292 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2025 Vitor Pamplona
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
package com.vitorpamplona.quartz.marmot.mls
|
||||
|
||||
import com.vitorpamplona.quartz.marmot.mls.group.MlsGroup
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertNotNull
|
||||
import kotlin.test.assertTrue
|
||||
|
||||
/**
|
||||
* Integration tests for MlsGroup — the main MLS engine API.
|
||||
*
|
||||
* Tests the complete lifecycle: group creation, member addition,
|
||||
* message encryption/decryption, and exporter key derivation.
|
||||
*/
|
||||
class MlsGroupTest {
|
||||
@Test
|
||||
fun testCreateGroup() {
|
||||
val identity = "alice@nostr".encodeToByteArray()
|
||||
val group = MlsGroup.create(identity)
|
||||
|
||||
assertEquals(0L, group.epoch)
|
||||
assertEquals(1, group.memberCount)
|
||||
assertEquals(0, group.leafIndex)
|
||||
assertEquals(32, group.groupId.size)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testCreateGroupWithSigningKey() {
|
||||
val identity = "alice@nostr".encodeToByteArray()
|
||||
val sigKp =
|
||||
com.vitorpamplona.quartz.marmot.mls.crypto.Ed25519
|
||||
.generateKeyPair()
|
||||
val group = MlsGroup.create(identity, sigKp.privateKey)
|
||||
|
||||
assertEquals(0L, group.epoch)
|
||||
assertEquals(1, group.memberCount)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testEncryptDecryptSameGroup() {
|
||||
val identity = "alice@nostr".encodeToByteArray()
|
||||
val group = MlsGroup.create(identity)
|
||||
|
||||
val plaintext = "Hello, MLS world!".encodeToByteArray()
|
||||
val encrypted = group.encrypt(plaintext)
|
||||
|
||||
assertTrue(encrypted.isNotEmpty())
|
||||
assertTrue(encrypted.size > plaintext.size, "Encrypted should be larger than plaintext")
|
||||
|
||||
val decrypted = group.decrypt(encrypted)
|
||||
assertEquals(0, decrypted.senderLeafIndex)
|
||||
assertEquals(group.epoch, decrypted.epoch)
|
||||
assertContentEquals(plaintext, decrypted.content)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testEncryptMultipleMessages() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
val messages =
|
||||
listOf(
|
||||
"First message",
|
||||
"Second message",
|
||||
"Third message",
|
||||
)
|
||||
|
||||
val encrypted = messages.map { group.encrypt(it.encodeToByteArray()) }
|
||||
|
||||
// Each encrypted message should be different (different nonce/generation)
|
||||
for (i in encrypted.indices) {
|
||||
for (j in i + 1 until encrypted.size) {
|
||||
assertFalse(
|
||||
encrypted[i].contentEquals(encrypted[j]),
|
||||
"Encrypted messages $i and $j should be different",
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testExporterSecret() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
// Marmot exporter: MLS-Exporter("marmot", "group-event", 32)
|
||||
val key = group.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertEquals(32, key.size)
|
||||
|
||||
// Same call produces same result (deterministic)
|
||||
val key2 = group.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
assertContentEquals(key, key2)
|
||||
|
||||
// Different label produces different key
|
||||
val key3 = group.exporterSecret("other", "group-event".encodeToByteArray(), 32)
|
||||
assertFalse(key.contentEquals(key3))
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testExporterSecretDifferentLengths() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
val key16 = group.exporterSecret("marmot", "test".encodeToByteArray(), 16)
|
||||
assertEquals(16, key16.size)
|
||||
|
||||
val key48 = group.exporterSecret("marmot", "test".encodeToByteArray(), 48)
|
||||
assertEquals(48, key48.size)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testMembersListAfterCreation() {
|
||||
val identity = "alice@nostr".encodeToByteArray()
|
||||
val group = MlsGroup.create(identity)
|
||||
|
||||
val members = group.members()
|
||||
assertEquals(1, members.size)
|
||||
assertEquals(0, members[0].first) // leaf index
|
||||
assertNotNull(members[0].second) // LeafNode present
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testCreateKeyPackage() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bundle = group.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
|
||||
assertNotNull(bundle.keyPackage)
|
||||
assertEquals(1, bundle.keyPackage.version)
|
||||
assertEquals(1, bundle.keyPackage.cipherSuite)
|
||||
assertEquals(32, bundle.keyPackage.initKey.size)
|
||||
assertEquals(32, bundle.initPrivateKey.size)
|
||||
assertEquals(32, bundle.encryptionPrivateKey.size)
|
||||
assertEquals(64, bundle.signaturePrivateKey.size)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testKeyPackageReference() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bundle = group.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
|
||||
val ref = bundle.keyPackage.reference()
|
||||
assertEquals(32, ref.size, "KeyPackage reference should be 32 bytes (SHA-256)")
|
||||
|
||||
// Deterministic
|
||||
val ref2 = bundle.keyPackage.reference()
|
||||
assertContentEquals(ref, ref2)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testAddMemberProducesCommitAndWelcome() {
|
||||
val aliceGroup = MlsGroup.create("alice".encodeToByteArray())
|
||||
val bobBundle = aliceGroup.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
val bobKpBytes = bobBundle.keyPackage.toTlsBytes()
|
||||
|
||||
val result = aliceGroup.addMember(bobKpBytes)
|
||||
|
||||
assertTrue(result.commitBytes.isNotEmpty(), "Commit bytes should not be empty")
|
||||
assertNotNull(result.welcomeBytes, "Welcome bytes should be present for Add")
|
||||
assertTrue(result.welcomeBytes!!.isNotEmpty(), "Welcome bytes should not be empty")
|
||||
|
||||
// After commit, epoch should advance
|
||||
assertEquals(1L, aliceGroup.epoch)
|
||||
assertEquals(2, aliceGroup.memberCount)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testRemoveMember() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
// Add bob first
|
||||
val bobBundle = group.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
group.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(2, group.memberCount)
|
||||
|
||||
// Remove bob
|
||||
val result = group.removeMember(1)
|
||||
assertTrue(result.commitBytes.isNotEmpty())
|
||||
assertEquals(2L, group.epoch) // epoch 0 -> addMember epoch 1 -> removeMember epoch 2
|
||||
assertEquals(1, group.memberCount)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testEpochAdvancesOnCommit() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
assertEquals(0L, group.epoch)
|
||||
|
||||
val bobBundle = group.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
group.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(1L, group.epoch)
|
||||
|
||||
val carolBundle = group.createKeyPackage("carol".encodeToByteArray(), ByteArray(0))
|
||||
group.addMember(carolBundle.keyPackage.toTlsBytes())
|
||||
assertEquals(2L, group.epoch)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testExporterSecretChangesPerEpoch() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
val key0 = group.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
|
||||
val bobBundle = group.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
group.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
|
||||
val key1 = group.exporterSecret("marmot", "group-event".encodeToByteArray(), 32)
|
||||
|
||||
assertFalse(key0.contentEquals(key1), "Exporter secret should change per epoch")
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testEncryptAfterEpochChange() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
|
||||
// Encrypt before adding member
|
||||
val ct1 = group.encrypt("before".encodeToByteArray())
|
||||
|
||||
// Add member, advancing epoch
|
||||
val bobBundle = group.createKeyPackage("bob".encodeToByteArray(), ByteArray(0))
|
||||
group.addMember(bobBundle.keyPackage.toTlsBytes())
|
||||
|
||||
// Encrypt after epoch change
|
||||
val ct2 = group.encrypt("after".encodeToByteArray())
|
||||
|
||||
// Both should produce valid ciphertexts
|
||||
assertTrue(ct1.isNotEmpty())
|
||||
assertTrue(ct2.isNotEmpty())
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testExternalJoin() {
|
||||
// Alice creates a group
|
||||
val alice = MlsGroup.create("alice".encodeToByteArray())
|
||||
assertEquals(0L, alice.epoch)
|
||||
assertEquals(1, alice.memberCount)
|
||||
|
||||
// Alice publishes GroupInfo for external joiners
|
||||
val groupInfoBytes = alice.groupInfo().toTlsBytes()
|
||||
|
||||
// Zara joins via external commit (without a Welcome)
|
||||
val (zara, commitBytes) =
|
||||
MlsGroup.externalJoin(
|
||||
groupInfoBytes,
|
||||
"zara".encodeToByteArray(),
|
||||
)
|
||||
|
||||
// Zara is now in the group at epoch 1
|
||||
assertEquals(1L, zara.epoch)
|
||||
|
||||
// Alice processes Zara's external commit
|
||||
alice.processCommit(commitBytes, zara.leafIndex, ByteArray(0))
|
||||
assertEquals(1L, alice.epoch)
|
||||
assertEquals(2, alice.memberCount)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun testSelfRemove() {
|
||||
val group = MlsGroup.create("alice".encodeToByteArray())
|
||||
val selfRemoveBytes = group.selfRemove()
|
||||
assertTrue(selfRemoveBytes.isNotEmpty())
|
||||
}
|
||||
|
||||
private fun assertContentEquals(
|
||||
expected: ByteArray,
|
||||
actual: ByteArray,
|
||||
) {
|
||||
kotlin.test.assertContentEquals(expected, actual)
|
||||
}
|
||||
|
||||
private fun assertFalse(
|
||||
condition: Boolean,
|
||||
message: String = "",
|
||||
) {
|
||||
kotlin.test.assertFalse(condition, message)
|
||||
}
|
||||
}
|
||||
@@ -120,7 +120,9 @@ void reduce_wide(secp256k1_fe *r, const uint64_t w[8]) {
|
||||
}
|
||||
}
|
||||
|
||||
fe_normalize(r);
|
||||
/* No fe_normalize — lazy. Output is in [0, 2^256), possibly in [P, P+C).
|
||||
* This is safe: mul/add/sub all handle unreduced inputs.
|
||||
* Only neg/half/isZero/cmp/toBytes need explicit normalize. */
|
||||
}
|
||||
|
||||
void fe_mul(secp256k1_fe *r, const secp256k1_fe *a, const secp256k1_fe *b) {
|
||||
@@ -187,7 +189,9 @@ void fe_mul(secp256k1_fe *r, const secp256k1_fe *a, const secp256k1_fe *b) {
|
||||
r->d[0] = (uint64_t)acc; carry = (uint64_t)(acc >> 64);
|
||||
if (carry) { r->d[1] += carry; if (r->d[1] < carry) { r->d[2]++; if (!r->d[2]) r->d[3]++; } }
|
||||
}
|
||||
fe_normalize(r);
|
||||
/* No fe_normalize — lazy. Output is in [0, 2^256), possibly in [P, P+C).
|
||||
* This is safe: mul/add/sub all handle unreduced inputs.
|
||||
* Only neg/half/isZero/cmp/toBytes need explicit normalize. */
|
||||
#else
|
||||
uint64_t w[8];
|
||||
mul_wide(w, a->d, b->d);
|
||||
@@ -267,7 +271,9 @@ void fe_mul(secp256k1_fe *r, const secp256k1_fe *a, const secp256k1_fe *b) {
|
||||
r->d[0] = sum;
|
||||
if (sum < c_lo) { r->d[1]++; if (!r->d[1]) { r->d[2]++; if (!r->d[2]) r->d[3]++; } }
|
||||
}
|
||||
fe_normalize(r);
|
||||
/* No fe_normalize — lazy. Output is in [0, 2^256), possibly in [P, P+C).
|
||||
* This is safe: mul/add/sub all handle unreduced inputs.
|
||||
* Only neg/half/isZero/cmp/toBytes need explicit normalize. */
|
||||
}
|
||||
|
||||
void fe_sqr(secp256k1_fe *r, const secp256k1_fe *a) { fe_mul(r, a, a); }
|
||||
|
||||
@@ -170,7 +170,7 @@ static inline void fe_mul_asm(secp256k1_fe *r, const secp256k1_fe *a, const secp
|
||||
);
|
||||
|
||||
r->d[0] = r0; r->d[1] = r1; r->d[2] = r2; r->d[3] = r3;
|
||||
fe_normalize(r);
|
||||
/* No normalize — lazy mul. Result in [0, 2^256). */
|
||||
}
|
||||
|
||||
#define FE_MUL_ASM 1
|
||||
@@ -357,7 +357,7 @@ static inline void fe_mul_asm(secp256k1_fe *r, const secp256k1_fe *a, const secp
|
||||
: : [rp]"r"(r->d), [lo0]"r"(lo0), [lo1]"r"(lo1), [lo2]"r"(lo2), [lo3]"r"(lo3)
|
||||
: "memory"
|
||||
);
|
||||
fe_normalize(r);
|
||||
/* No normalize — lazy mul. Result in [0, 2^256). */
|
||||
}
|
||||
|
||||
#define FE_MUL_ASM 1
|
||||
|
||||
Reference in New Issue
Block a user