feat: enable RNQC for encrypt/decrypt

.changeset/proud-humans-flash.md

@@ -0,0 +1,6 @@
+---
+"jazz-react-native-core": patch
+"cojson": patch
+---
+
+Enable react-native-quick-crypto xsalsa20 accelerated algorithm for encrypt/decrypt functions

.gitignore

@@ -20,6 +20,9 @@ __screenshots__
 # Playwright
 test-results
 
+# Java
+.java-version
+
 .husky
 
 .vscode/*

packages/cojson/src/crypto/PureJSCrypto.ts

@@ -67,7 +67,7 @@ export class PureJSCrypto extends CryptoProvider<Blake3State> {
     return this.blake3HashOnce(input).slice(0, 24);
   }
 
-  private generateJsonNonce(material: JsonValue): Uint8Array {
+  protected generateJsonNonce(material: JsonValue): Uint8Array {
     return this.generateNonce(textEncoder.encode(stableStringify(material)));
   }
 

packages/cojson/src/exports.ts

@@ -58,7 +58,7 @@ import type {
   BinaryStreamInfo,
 } from "./coValues/coStream.js";
 import type { InviteSecret } from "./coValues/group.js";
-import type { AgentSecret } from "./crypto/crypto.js";
+import { AgentSecret, textDecoder, textEncoder } from "./crypto/crypto.js";
 import type { AgentID, RawCoID, SessionID } from "./ids.js";
 import type { JsonObject, JsonValue } from "./jsonValue.js";
 import type * as Media from "./media.js";
@@ -108,6 +108,8 @@ export const cojsonInternals = {
   setCoValueLoadingRetryDelay(delay: number) {
     CO_VALUE_LOADING_CONFIG.RETRY_DELAY = delay;
   },
+  textEncoder,
+  textDecoder,
 };
 
 export {
@@ -169,18 +171,19 @@ export type {
   AccountRole,
 };
 
+// biome-ignore format: off
 // eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace CojsonInternalTypes {
   export type CoValueKnownState = import("./sync.js").CoValueKnownState;
   export type CoJsonValue<T> = import("./jsonValue.js").CoJsonValue<T>;
   export type DoneMessage = import("./sync.js").DoneMessage;
+  export type Encrypted<T extends JsonValue, N extends JsonValue> = import("./crypto/crypto.js").Encrypted<T, N>;
+  export type KeySecret = import("./crypto/crypto.js").KeySecret;
   export type KnownStateMessage = import("./sync.js").KnownStateMessage;
   export type LoadMessage = import("./sync.js").LoadMessage;
   export type NewContentMessage = import("./sync.js").NewContentMessage;
   export type SessionNewContent = import("./sync.js").SessionNewContent;
-  // biome-ignore format: inserts spurious trialing comma that breaks some parsers
   export type CoValueHeader = import("./coValueCore/verifiedState.js").CoValueHeader;
-  // biome-ignore format: inserts spurious trialing comma that breaks some parsers
   export type Transaction = import("./coValueCore/verifiedState.js").Transaction;
   export type TransactionID = import("./ids.js").TransactionID;
   export type Signature = import("./crypto/crypto.js").Signature;
@@ -191,3 +194,4 @@ export namespace CojsonInternalTypes {
   export type SignerSecret = import("./crypto/crypto.js").SignerSecret;
   export type JsonObject = import("./jsonValue.js").JsonObject;
 }
+// biome-ignore format: on

packages/jazz-react-native-core/package.json

@@ -40,6 +40,7 @@
     "cojson-transport-ws": "workspace:*",
     "jazz-react-core": "workspace:*",
     "jazz-tools": "workspace:*",
+    "react-native-fast-encoder": "^0.2.0",
     "react-native-nitro-modules": "0.25.2",
     "react-native-quick-crypto": "1.0.0-beta.16"
   },

packages/jazz-react-native-core/src/crypto/RNQuickCrypto.ts

@@ -1,12 +1,15 @@
 import { base58 } from "@scure/base";
-import { JsonValue } from "cojson";
+import {
+  JsonValue,
+  Stringified,
+  base64URLtoBytes,
+  bytesToBase64url,
+} from "cojson";
 import { CojsonInternalTypes, cojsonInternals } from "cojson";
 import { PureJSCrypto } from "cojson/dist/crypto/PureJSCrypto"; // Importing from dist to not rely on the exports field
-import { Ed } from "react-native-quick-crypto";
+import { Ed, xsalsa20 } from "react-native-quick-crypto";
 const { stableStringify } = cojsonInternals;
 
-const textEncoder = new TextEncoder();
-
 export class RNQuickCrypto extends PureJSCrypto {
   ed: Ed;
 
@@ -30,7 +33,7 @@ export class RNQuickCrypto extends PureJSCrypto {
   ): CojsonInternalTypes.Signature {
     const signature = new Uint8Array(
       this.ed.signSync(
-        textEncoder.encode(stableStringify(message)),
+        cojsonInternals.textEncoder.encode(stableStringify(message)),
         base58.decode(secret.substring("signerSecret_z".length)),
       ),
     );
@@ -44,8 +47,46 @@ export class RNQuickCrypto extends PureJSCrypto {
   ): boolean {
     return this.ed.verifySync(
       base58.decode(signature.substring("signature_z".length)),
-      textEncoder.encode(stableStringify(message)),
+      cojsonInternals.textEncoder.encode(stableStringify(message)),
       base58.decode(id.substring("signer_z".length)),
     );
   }
+
+  encrypt<T extends JsonValue, N extends JsonValue>(
+    value: T,
+    keySecret: CojsonInternalTypes.KeySecret,
+    nOnceMaterial: N,
+  ): CojsonInternalTypes.Encrypted<T, N> {
+    const keySecretBytes = base58.decode(
+      keySecret.substring("keySecret_z".length),
+    );
+    const nOnce = this.generateJsonNonce(nOnceMaterial);
+
+    const plaintext = cojsonInternals.textEncoder.encode(
+      stableStringify(value),
+    );
+    const ciphertext = xsalsa20(keySecretBytes, nOnce, plaintext);
+    return `encrypted_U${bytesToBase64url(ciphertext)}` as CojsonInternalTypes.Encrypted<
+      T,
+      N
+    >;
+  }
+
+  decryptRaw<T extends JsonValue, N extends JsonValue>(
+    encrypted: CojsonInternalTypes.Encrypted<T, N>,
+    keySecret: CojsonInternalTypes.KeySecret,
+    nOnceMaterial: N,
+  ): Stringified<T> {
+    const keySecretBytes = base58.decode(
+      keySecret.substring("keySecret_z".length),
+    );
+    const nOnce = this.generateJsonNonce(nOnceMaterial);
+
+    const ciphertext = base64URLtoBytes(
+      encrypted.substring("encrypted_U".length),
+    );
+    const plaintext = xsalsa20(keySecretBytes, nOnce, ciphertext);
+
+    return cojsonInternals.textDecoder.decode(plaintext) as Stringified<T>;
+  }
 }

pnpm-lock.yaml

@@ -2616,6 +2616,9 @@ importers:
       jazz-tools:
         specifier: workspace:*
         version: link:../jazz-tools
+      react-native-fast-encoder:
+        specifier: ^0.2.0
+        version: 0.2.0(react-native@0.79.2(@babel/core@7.27.1)(@react-native-community/cli@15.0.1(typescript@5.6.2))(@types/react@19.0.0)(react@19.0.0))(react@19.0.0)
       react-native-nitro-modules:
         specifier: 0.25.2
         version: 0.25.2(react-native@0.79.2(@babel/core@7.27.1)(@react-native-community/cli@15.0.1(typescript@5.6.2))(@types/react@19.0.0)(react@19.0.0))(react@19.0.0)
@@ -9641,6 +9644,9 @@ packages:
     resolution: {integrity: sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw==}
     engines: {node: '>=16'}
 
+  flatbuffers@2.0.6:
+    resolution: {integrity: sha512-QTTZTXTbVfuOVQu2X6eLOw4vefUxnFJZxAKeN3rEPhjEzBtIbehimJLfVGHPM8iX0Na+9i76SBEg0skf0c0sCA==}
+
   flatted@3.3.2:
     resolution: {integrity: sha512-AiwGJM8YcNOaobumgtng+6NHuOqC3A7MixFeDafM3X9cIUM+xUXoS5Vfgf+OihAYe20fxqNM9yPBXJzRtZ/4eA==}
 
@@ -12527,6 +12533,13 @@ packages:
       react: 19.0.0
       react-native: '*'
 
+  react-native-fast-encoder@0.2.0:
+    resolution: {integrity: sha512-E4mx81fRMVs0qq8is3cZTrbuEJdsDo8Nfe7qTxKZwsCianpYpA2QfyH6cEYumSOEht6l+KeRJ4RqcyfxMDyesg==}
+    engines: {node: '>= 18.0.0'}
+    peerDependencies:
+      react: 19.0.0
+      react-native: '*'
+
   react-native-fetch-api@3.0.0:
     resolution: {integrity: sha512-g2rtqPjdroaboDKTsJCTlcmtw54E25OjyaunUP0anOZn4Fuo2IKs8BVfe02zVggA/UysbmfSnRJIqtNkAgggNA==}
 
@@ -19144,7 +19157,7 @@ snapshots:
       eslint: 8.57.1
       eslint-config-prettier: 8.10.0(eslint@8.57.1)
       eslint-plugin-eslint-comments: 3.2.0(eslint@8.57.1)
-      eslint-plugin-ft-flow: 2.0.3(@babel/eslint-parser@7.27.0(@babel/core@7.26.0)(eslint@8.57.1))(eslint@8.57.1)
+      eslint-plugin-ft-flow: 2.0.3(@babel/eslint-parser@7.27.0(@babel/core@7.27.1)(eslint@8.57.1))(eslint@8.57.1)
       eslint-plugin-jest: 27.9.0(@typescript-eslint/eslint-plugin@7.18.0(@typescript-eslint/parser@7.18.0(eslint@8.57.1)(typescript@5.6.2))(eslint@8.57.1)(typescript@5.6.2))(eslint@8.57.1)(jest@29.7.0(@types/node@22.15.18)(babel-plugin-macros@3.1.0)(ts-node@10.9.2(@swc/core@1.10.1(@swc/helpers@0.5.15))(@types/node@22.15.18)(typescript@5.6.2)))(typescript@5.6.2)
       eslint-plugin-react: 7.37.4(eslint@8.57.1)
       eslint-plugin-react-hooks: 4.6.2(eslint@8.57.1)
@@ -22600,7 +22613,7 @@ snapshots:
       eslint: 8.57.1
       ignore: 5.3.2
 
-  eslint-plugin-ft-flow@2.0.3(@babel/eslint-parser@7.27.0(@babel/core@7.26.0)(eslint@8.57.1))(eslint@8.57.1):
+  eslint-plugin-ft-flow@2.0.3(@babel/eslint-parser@7.27.0(@babel/core@7.27.1)(eslint@8.57.1))(eslint@8.57.1):
     dependencies:
       '@babel/eslint-parser': 7.27.0(@babel/core@7.27.1)(eslint@8.57.1)
       eslint: 8.57.1
@@ -23509,6 +23522,8 @@ snapshots:
       flatted: 3.3.2
       keyv: 4.5.4
 
+  flatbuffers@2.0.6: {}
+
   flatted@3.3.2: {}
 
   flatted@3.3.3: {}
@@ -26870,6 +26885,13 @@ snapshots:
       react: 19.0.0
       react-native: 0.79.2(@babel/core@7.27.1)(@react-native-community/cli@15.0.1(typescript@5.6.2))(@types/react@19.0.0)(react@19.0.0)
 
+  react-native-fast-encoder@0.2.0(react-native@0.79.2(@babel/core@7.27.1)(@react-native-community/cli@15.0.1(typescript@5.6.2))(@types/react@19.0.0)(react@19.0.0))(react@19.0.0):
+    dependencies:
+      big-integer: 1.6.52
+      flatbuffers: 2.0.6
+      react: 19.0.0
+      react-native: 0.79.2(@babel/core@7.27.1)(@react-native-community/cli@15.0.1(typescript@5.6.2))(@types/react@19.0.0)(react@19.0.0)
+
   react-native-fetch-api@3.0.0:
     dependencies:
       p-defer: 3.0.0