fix: fix padding on client side (#420)

Author: asbiin

.github/workflows/tests.yml

@@ -102,6 +102,11 @@ jobs:
         run: |
           composer update --no-interaction --no-progress --prefer-dist
 
+      - name: Setup problem matchers
+        run: |
+          echo "::add-matcher::${{ runner.tool_cache }}/php.json"
+          echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
+
       - name: Run test suite
         run: vendor/bin/phpunit -c phpunit.xml --log-junit ./results/results_${{ matrix.psr7 }}.xml --coverage-clover ./results/coverage_${{ matrix.psr7 }}.xml
 

resources/js/webauthn.js

@@ -58,7 +58,7 @@ WebAuthn.prototype._registerCallback = function(publicKey, callback) {
     rawId: this._bufferEncode(publicKey.rawId),
     response: {
       /** @see https://www.w3.org/TR/webauthn/#authenticatorattestationresponse */
-      clientDataJSON: this._bufferEncode(publicKey.response.clientDataJSON),
+      clientDataJSON: this._bufferEncode(publicKey.response.clientDataJSON).replace(/=/g, ''),
       attestationObject: this._bufferEncode(publicKey.response.attestationObject)
     }
   };
@@ -103,8 +103,8 @@ WebAuthn.prototype._signCallback = function(publicKey, callback) {
     rawId: this._bufferEncode(publicKey.rawId),
     response: {
       /** @see https://www.w3.org/TR/webauthn/#iface-authenticatorassertionresponse */
-      authenticatorData: this._bufferEncode(publicKey.response.authenticatorData),
-      clientDataJSON: this._bufferEncode(publicKey.response.clientDataJSON),
+      authenticatorData: this._bufferEncode(publicKey.response.authenticatorData).replace(/=/g, ''),
+      clientDataJSON: this._bufferEncode(publicKey.response.clientDataJSON).replace(/=/g, ''),
       signature: this._bufferEncode(publicKey.response.signature),
       userHandle: (publicKey.response.userHandle ? this._bufferEncode(publicKey.response.userHandle) : null),
     }
@@ -130,7 +130,7 @@ WebAuthn.prototype._bufferEncode = function(value) {
  * @return {string}
  */
 WebAuthn.prototype._bufferDecode = function(value) {
-  var t = window.atob(value)
+  var t = window.atob(value);
   return Uint8Array.from(t, c => c.charCodeAt(0));
 }