Remove jsonwebtoken and base64url in favor of native crypto (#318)

NOTICE.txt

@@ -15,56 +15,7 @@ The above copyright notice and this permission notice shall be included in all c
 
 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.
 
-_____________________
-
-Brian J. Brennan (base64url)
-
-Copyright (c) 2013–2016 Brian J. Brennan
-
-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.
-
-_____________________
-
-Auth0, Inc. (jsonwebtoken)
-
-The MIT License (MIT)
-
-Copyright (c) 2015 Auth0, Inc. <support@auth0.com> (http://auth0.com)
-
-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.
 
 _____________________
 

index.ts

@@ -185,7 +185,7 @@ export { RenewalBillingPlanType } from './models/RenewalBillingPlanType'
 export { RenewalCommitmentInfo } from './models/RenewalCommitmentInfo'
 export { TransactionCommitmentInfo } from './models/TransactionCommitmentInfo'
 
-import jsonwebtoken = require('jsonwebtoken');
+import { sign } from 'crypto';
 import { AppTransactionInfoResponse, AppTransactionInfoResponseValidator } from './models/AppTransactionInfoResponse';
 import { NotificationHistoryRequest } from './models/NotificationHistoryRequest';
 import { NotificationHistoryResponse, NotificationHistoryResponseValidator } from './models/NotificationHistoryResponse';
@@ -714,10 +714,27 @@ export class AppStoreServerAPIClient {
     }
 
     private createBearerToken(): string {
+        const now = Math.floor(Date.now() / 1000);
         const payload = {
-            bid: this.bundleId
-        }
-        return jsonwebtoken.sign(payload, this.signingKey, { algorithm: 'ES256', keyid: this.keyId, issuer: this.issuerId, audience: 'appstoreconnect-v1', expiresIn: '5m'});
+            bid: this.bundleId,
+            iss: this.issuerId,
+            aud: 'appstoreconnect-v1',
+            iat: now,
+            exp: now + 300
+        };
+        const header = {
+            alg: 'ES256',
+            kid: this.keyId,
+            typ: 'JWT'
+        };
+        const headerB64 = Buffer.from(JSON.stringify(header)).toString('base64url');
+        const payloadB64 = Buffer.from(JSON.stringify(payload)).toString('base64url');
+        const signingInput = `${headerB64}.${payloadB64}`;
+        const signature = sign('SHA256', Buffer.from(signingInput), {
+            key: this.signingKey,
+            dsaEncoding: 'ieee-p1363'
+        }).toString('base64url');
+        return `${signingInput}.${signature}`;
     }
 }
 

jws_signature_creator.ts

@@ -1,7 +1,6 @@
 // Copyright (c) 2025 Apple Inc. Licensed under MIT License.
 
-import jsonwebtoken = require('jsonwebtoken');
-import { randomUUID } from 'crypto';
+import { randomUUID, sign } from 'crypto';
 
 class BaseSignatureCreator {
     private audience: string
@@ -18,13 +17,28 @@ class BaseSignatureCreator {
         this.signingKey = signingKey
     }
 
-    protected internalCreateSignature(featureSpecificClaims: { [key: string]: any }) {
-        var claims = featureSpecificClaims
+    protected internalCreateSignature(featureSpecificClaims: { [key: string]: any }): string {
+        const claims = { ...featureSpecificClaims }
 
         claims['bid'] = this.bundleId
         claims['nonce'] = randomUUID()
+        claims['iss'] = this.issuerId
+        claims['aud'] = this.audience
+        claims['iat'] = Math.floor(Date.now() / 1000)
 
-        return jsonwebtoken.sign(claims, this.signingKey, { algorithm: 'ES256', keyid: this.keyId, issuer: this.issuerId, audience: this.audience})
+        const header = {
+            alg: 'ES256',
+            kid: this.keyId,
+            typ: 'JWT'
+        }
+        const headerB64 = Buffer.from(JSON.stringify(header)).toString('base64url')
+        const payloadB64 = Buffer.from(JSON.stringify(claims)).toString('base64url')
+        const signingInput = `${headerB64}.${payloadB64}`
+        const signature = sign('SHA256', Buffer.from(signingInput), {
+            key: this.signingKey,
+            dsaEncoding: 'ieee-p1363'
+        }).toString('base64url')
+        return `${signingInput}.${signature}`
     }
 }
 

jws_verification.ts

@@ -1,8 +1,5 @@
 // Copyright (c) 2023 Apple Inc. Licensed under MIT License.
 
-import jsonwebtoken = require('jsonwebtoken');
-
-import base64url from 'base64url';
 import { KeyObject, X509Certificate, createHash, verify } from 'crypto';
 import { KJUR, X509, ASN1HEX } from 'jsrsasign';
 import fetch, { Headers } from 'node-fetch';
@@ -205,7 +202,12 @@ export class SignedDataVerifier {
       let certificateChain;
       let decodedJWT
       try {
-        decodedJWT = jsonwebtoken.decode(jwt)
+        const parts = jwt.split('.')
+        if (parts.length !== 3) {
+          throw new Error("Invalid JWT format")
+        }
+        const payloadJson = Buffer.from(parts[1], 'base64url').toString('utf8')
+        decodedJWT = JSON.parse(payloadJson)
         if (!validator.validate(decodedJWT)) {
           throw new VerificationException(VerificationStatus.FAILURE)
         }
@@ -215,8 +217,8 @@ export class SignedDataVerifier {
           return decodedJWT
         }
         try {
-          const header = jwt.split('.')[0]
-          const decodedHeader = base64url.decode(header)
+          const header = parts[0]
+          const decodedHeader = Buffer.from(header, 'base64url').toString('utf8')
           const headerObj = JSON.parse(decodedHeader)
           const chain: string[] = headerObj['x5c'] ?? []
           if (chain.length != 3) {
@@ -231,11 +233,15 @@ export class SignedDataVerifier {
         }
         const effectiveDate = this.enableOnlineChecks ? new Date() : signedDateExtractor(decodedJWT)
         const publicKey = await this.verifyCertificateChain(this.rootCertificates, certificateChain[0], certificateChain[1], effectiveDate);
-        const encodedKey = publicKey.export({
-          type: "spki",
-          format: "pem"
-        });
-        jsonwebtoken.verify(jwt, encodedKey) as T
+        const signingInput = Buffer.from(`${parts[0]}.${parts[1]}`)
+        const signature = Buffer.from(parts[2], 'base64url')
+        const isSignatureValid = verify('SHA256', signingInput, {
+          key: publicKey,
+          dsaEncoding: 'ieee-p1363'
+        }, signature)
+        if (!isSignatureValid) {
+          throw new VerificationException(VerificationStatus.VERIFICATION_FAILURE)
+        }
         return decodedJWT
       } catch (error) {
         if (error instanceof VerificationException) {

package.json

@@ -11,12 +11,9 @@
   },
   "types": "dist/index.d.ts",
   "dependencies": {
-    "@types/jsonwebtoken": "^9.0.5",
     "@types/jsrsasign": "^10.5.12",
     "@types/node": "^26.3.0",
     "@types/node-fetch": "^2.6.13",
-    "base64url": "^3.0.1",
-    "jsonwebtoken": "^9.0.2",
     "jsrsasign": "^11.1.5",
     "node-fetch": "^2.7.0"
   },

tests/unit-tests/api_client.test.ts

@@ -23,8 +23,6 @@ import { RefundPreferenceV1 } from "../../models/RefundPreferenceV1";
 import { APIError, APIException, AppStoreServerAPIClient, ExtendReasonCode, ExtendRenewalDateRequest, GetTransactionHistoryVersion, MassExtendRenewalDateRequest, NotificationHistoryRequest, NotificationHistoryResponseItem, Order, OrderLookupStatus, ProductType, SendAttemptResult, TransactionHistoryRequest } from "../../index";
 import { Response } from "node-fetch";
 
-import jsonwebtoken = require('jsonwebtoken');
-
 type callbackType = (path: string, parsedQueryParameters: URLSearchParams, method: string, requestBody: string | Buffer | undefined, headers: { [key: string]: string; }) => void
 
 class AppStoreServerAPIClientForTest extends AppStoreServerAPIClient {
@@ -55,7 +53,8 @@ class AppStoreServerAPIClientForTest extends AppStoreServerAPIClient {
         expect('application/json').toBe(headers['Accept'])
         expect(headers['Authorization']).toMatch(/^Bearer .+/)
         const token = headers['Authorization'].substring(7)
-        const decodedToken = jsonwebtoken.decode(token) as jsonwebtoken.JwtPayload
+        const parts = token.split('.')
+        const decodedToken = JSON.parse(Buffer.from(parts[1], 'base64url').toString('utf8'))
         expect(decodedToken['bid']).toBe('bundleId')
         expect(decodedToken['aud']).toBe('appstoreconnect-v1')
         expect(decodedToken['iss']).toBe('issuerId')

tests/unit-tests/jws_signature_creator.test.ts

@@ -2,7 +2,6 @@
 
 import { AdvancedCommerceInAppRequest, AdvancedCommerceInAppSignatureCreator, IntroductoryOfferEligibilitySignatureCreator, PromotionalOfferV2SignatureCreator } from "../../jws_signature_creator";
 import { readFile } from "../util"
-import jsonwebtoken = require('jsonwebtoken');
 
 interface TestInAppRequest extends AdvancedCommerceInAppRequest {
     testValue: string

tests/util.ts

@@ -3,8 +3,7 @@
 import * as fs from 'fs';
 import { Environment } from '../models/Environment';
 import { SignedDataVerifier } from '../jws_verification';
-import { ECKeyPairOptions, generateKeyPairSync } from 'crypto';
-import jsonwebtoken = require('jsonwebtoken');
+import { ECKeyPairOptions, generateKeyPairSync, sign } from 'crypto';
 
 export function readFile(path: string): string {
     return fs.readFileSync(path, {
@@ -44,5 +43,13 @@ export function createSignedDataFromJson(path: string): string {
     const keypair = generateKeyPairSync("ec", keyPairOptions)
     // When PEM encoding was selected, the respective key will be a string, otherwise it will be a buffer containing the data encoded as DER.
     const privateKey = keypair.privateKey as string
-    return jsonwebtoken.sign(fileContents, privateKey, { algorithm: 'ES256'});
+    const header = { alg: 'ES256', typ: 'JWT' }
+    const headerB64 = Buffer.from(JSON.stringify(header)).toString('base64url')
+    const payloadB64 = Buffer.from(fileContents).toString('base64url')
+    const signingInput = `${headerB64}.${payloadB64}`
+    const signature = sign('SHA256', Buffer.from(signingInput), {
+        key: privateKey,
+        dsaEncoding: 'ieee-p1363'
+    }).toString('base64url')
+    return `${signingInput}.${signature}`
 }