fix: KeepKey produces accurate EIP-712 eth_signTypedData_v4 signatures (

#649)

examples/sandbox/index.html

@@ -300,12 +300,13 @@ <h5>Arkeo</h5>
       <h4>Ethereum</h4>
       <button class="button button-outline" id="ethAddr">Address</button>
       <button class="button button-outline" id="ethTx">Tx</button>
-      <button class="button button-outline" id="ethSign">Sign</button>
+      <button class="button button-outline" id="ethEIP1559">EIP-1559?</button>
       <button class="button button-outline" id="ethSend">Send</button>
+      <button class="button button-outline" id="ethSign">Sign Message</button>
       <button class="button button-outline" id="ethVerify">Verify</button>
-      <button class="button button-outline" id="ethEIP1559">EIP-1559?</button>
-      <button class="button button-outline" id="ethSignTypedData">Sign Typed Data</button>
-      <button class="button button-outline" id="ethSignTypedDataPreCalculate">Sign Typed Data (Pre-Calculate)</button>
+      <button class="button button-outline" id="ethSignTypedData">Sign Typed Data (OpenSea Listing)</button>
+      <button class="button button-outline" id="ethSignTypedDataAlternate1">Sign Typed Data (primaryType is 80+ chars)</button>
+      <button class="button button-outline" id="ethSignTypedDataAlternate2">Sign Typed Data (primaryType is "EIP712Domain")</button>
       <input type="text" id="ethResults" />
     </div>
     <div class="container">
@@ -437,11 +438,6 @@ <h3>Mnemoic Required</h3>
     </div>
 
     <script src="https://unpkg.com/[email protected]/dist/debug.js"></script>
-    <script
-      src="https://code.jquery.com/jquery-3.3.1.min.js"
-      integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
-      crossorigin="anonymous"
-    ></script>
     <script type="module" src="./index.ts"></script>
   </body>
 </html>