Add ability to sign with an installation key

android/build.gradle

@@ -98,7 +98,7 @@ repositories {
 dependencies {
   implementation project(':expo-modules-core')
   implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${getKotlinVersion()}"
-  implementation "org.xmtp:android:3.0.5"
+  implementation "org.xmtp:android:3.0.6"
   implementation 'com.google.code.gson:gson:2.10.1'
   implementation 'com.facebook.react:react-native:0.71.3'
   implementation "com.daveanthonythomas.moshipack:moshipack:1.0.1"

android/src/main/java/expo/modules/xmtpreactnativesdk/XMTPModule.kt

@@ -364,6 +364,15 @@ class XMTPModule : Module() {
             }
         }
 
+        AsyncFunction("signWithInstallationKey") Coroutine { inboxId: String, message: String ->
+            withContext(Dispatchers.IO) {
+                val client = clients[inboxId] ?: throw XMTPException("No client")
+
+                val signature = client.signWithInstallationKey(message)
+                signature.map { it.toInt() and 0xFF }
+            }
+        }
+
         AsyncFunction("canMessage") Coroutine { inboxId: String, peerAddresses: List<String> ->
             withContext(Dispatchers.IO) {
                 logV("canMessage")
@@ -445,7 +454,11 @@ class XMTPModule : Module() {
                 val params = ConversationParamsWrapper.conversationParamsFromJson(groupParams ?: "")
                 val order = getConversationSortOrder(sortOrder ?: "")
                 val consent = consentState?.let { getConsentState(it) }
-                val groups = client.conversations.listGroups(order = order, limit = limit, consentState = consent)
+                val groups = client.conversations.listGroups(
+                    order = order,
+                    limit = limit,
+                    consentState = consent
+                )
                 groups.map { group ->
                     GroupWrapper.encode(client, group, params)
                 }
@@ -459,7 +472,11 @@ class XMTPModule : Module() {
                 val params = ConversationParamsWrapper.conversationParamsFromJson(groupParams ?: "")
                 val order = getConversationSortOrder(sortOrder ?: "")
                 val consent = consentState?.let { getConsentState(it) }
-                val dms = client.conversations.listDms(order = order, limit = limit, consentState = consent)
+                val dms = client.conversations.listDms(
+                    order = order,
+                    limit = limit,
+                    consentState = consent
+                )
                 dms.map { dm ->
                     DmWrapper.encode(client, dm, params)
                 }
@@ -474,7 +491,8 @@ class XMTPModule : Module() {
                     ConversationParamsWrapper.conversationParamsFromJson(conversationParams ?: "")
                 val order = getConversationSortOrder(sortOrder ?: "")
                 val consent = consentState?.let { getConsentState(it) }
-                val conversations = client.conversations.list(order = order, limit = limit, consentState = consent)
+                val conversations =
+                    client.conversations.list(order = order, limit = limit, consentState = consent)
                 conversations.map { conversation ->
                     ConversationWrapper.encode(client, conversation, params)
                 }

example/ios/Podfile.lock

@@ -56,7 +56,7 @@ PODS:
     - hermes-engine/Pre-built (= 0.71.14)
   - hermes-engine/Pre-built (0.71.14)
   - libevent (2.1.12)
-  - LibXMTP (3.0.1)
+  - LibXMTP (3.0.3)
   - Logging (1.0.0)
   - MessagePacker (0.4.7)
   - MMKV (2.0.0):
@@ -449,16 +449,16 @@ PODS:
     - GenericJSON (~> 2.0)
     - Logging (~> 1.0.0)
     - secp256k1.swift (~> 0.1)
-  - XMTP (3.0.5):
+  - XMTP (3.0.6):
     - Connect-Swift (= 0.12.0)
     - GzipSwift
-    - LibXMTP (= 3.0.1)
+    - LibXMTP (= 3.0.3)
     - web3.swift
   - XMTPReactNative (0.1.0):
     - ExpoModulesCore
     - MessagePacker
     - secp256k1.swift
-    - XMTP (= 3.0.5)
+    - XMTP (= 3.0.6)
   - Yoga (1.14.0)
 
 DEPENDENCIES:
@@ -711,7 +711,7 @@ SPEC CHECKSUMS:
   GzipSwift: 893f3e48e597a1a4f62fafcb6514220fcf8287fa
   hermes-engine: d7cc127932c89c53374452d6f93473f1970d8e88
   libevent: 4049cae6c81cdb3654a443be001fb9bdceff7913
-  LibXMTP: b23a18d05d458fee72f0a96a114b1eb1e6d77d3b
+  LibXMTP: 948d39cf5b978adaa7d0f6ea5c6c0995a0b9e63f
   Logging: 9ef4ecb546ad3169398d5a723bc9bea1c46bef26
   MessagePacker: ab2fe250e86ea7aedd1a9ee47a37083edd41fd02
   MMKV: f7d1d5945c8765f97f39c3d121f353d46735d801
@@ -763,8 +763,8 @@ SPEC CHECKSUMS:
   secp256k1.swift: a7e7a214f6db6ce5db32cc6b2b45e5c4dd633634
   SwiftProtobuf: 407a385e97fd206c4fbe880cc84123989167e0d1
   web3.swift: 2263d1e12e121b2c42ffb63a5a7beb1acaf33959
-  XMTP: 7b9105a3549427a294fb991c5892ebec73d2388d
-  XMTPReactNative: 0862a746eaddb7d643ad4cbdc2727d02863d9a18
+  XMTP: 48d0c71ef732ac4d79c2942902a132bf71661029
+  XMTPReactNative: 406f92e777c9d2891404956309d926e7b2f25c1c
   Yoga: e71803b4c1fff832ccf9b92541e00f9b873119b9
 
 PODFILE CHECKSUM: 0e6fe50018f34e575d38dc6a1fdf1f99c9596cdd

example/src/tests/clientTests.ts

@@ -34,6 +34,18 @@ test('can make a client', async () => {
   return true
 })
 
+test('can sign with installation key', async () => {
+  const [client] = await createClients(1)
+
+  const signature = await client.signWithInstallationKey('A digest message')
+
+  assert(
+    signature !== undefined && signature.length > 0,
+    `Signature should not be empty but was: ${signature}`
+  )
+  return true
+})
+
 test('can revoke all other installations', async () => {
   const keyBytes = new Uint8Array([
     233, 120, 198, 96, 154, 65, 132, 17, 132, 96, 250, 40, 103, 35, 125, 64,

ios/XMTPModule.swift

@@ -300,6 +300,16 @@ public class XMTPModule: Module {
 			await clientsManager.dropClient(key: inboxId)
 		}
 
+		AsyncFunction("signWithInstallationKey") {
+			(inboxId: String, message: String) -> [UInt8] in
+			guard let client = await clientsManager.getClient(key: inboxId)
+			else {
+				throw Error.noClient
+			}
+			let signature = try client.signWithInstallationKey(message: message)
+			return [UInt8](signature)
+		}
+
 		AsyncFunction("canMessage") {
 			(inboxId: String, peerAddresses: [String]) -> [String: Bool] in
 			guard let client = await clientsManager.getClient(key: inboxId)

ios/XMTPReactNative.podspec

@@ -26,5 +26,5 @@ Pod::Spec.new do |s|
   s.source_files = "**/*.{h,m,swift}"
   s.dependency 'secp256k1.swift'
   s.dependency "MessagePacker"
-  s.dependency "XMTP", "= 3.0.5"
+  s.dependency "XMTP", "= 3.0.6"
 end

src/index.ts

@@ -190,6 +190,17 @@ export async function dropClient(inboxId: InboxId) {
   return await XMTPModule.dropClient(inboxId)
 }
 
+export async function signWithInstallationKey(
+  inboxId: InboxId,
+  message: string
+): Promise<Uint8Array> {
+  const signatureArray = await XMTPModule.signWithInstallationKey(
+    inboxId,
+    message
+  )
+  return new Uint8Array(signatureArray)
+}
+
 export async function canMessage(
   inboxId: InboxId,
   peerAddresses: Address[]

src/lib/Client.ts

@@ -17,11 +17,13 @@
 
 declare const Buffer
 
-export type GetMessageContentTypeFromClient<C> =
-  C extends Client<infer T> ? T : never
+export type GetMessageContentTypeFromClient<C> = C extends Client<infer T>
+  ? T
+  : never
 
-export type ExtractDecodedType<C> =
-  C extends XMTPModule.ContentCodec<infer T> ? T : never
+export type ExtractDecodedType<C> = C extends XMTPModule.ContentCodec<infer T>
+  ? T
+  : never
 
 export type InboxId = string & { readonly brand: unique symbol }
 export type Address = string
@@ -316,6 +318,10 @@
     this.codecRegistry[id] = contentCodec
   }
 
+  async signWithInstallationKey(message: string): Promise<Uint8Array> {
+    return XMTPModule.signWithInstallationKey(this.inboxId, message)
+  }
+
   /**
    * Find the Address associated with this address
    *
@@ -409,8 +415,15 @@
    * @param {boolean} refreshFromNetwork - If you want to refresh the current state the inbox from the network or not.
    * @returns {Promise<InboxState[]>} A Promise resolving to a list of InboxState.
    */
-  async inboxStates(refreshFromNetwork: boolean, inboxIds: InboxId[]): Promise<InboxState[]> {
-    return await XMTPModule.getInboxStates(this.inboxId, refreshFromNetwork, inboxIds)
+  async inboxStates(
+    refreshFromNetwork: boolean,
+    inboxIds: InboxId[]
+  ): Promise<InboxState[]> {
+    return await XMTPModule.getInboxStates(
+      this.inboxId,
+      refreshFromNetwork,
+      inboxIds
+    )
   }
 
   /**