Remove dead wrapKey module

- Delete the unreachable msrcryptoWrapKey module (src/wrapKey.js): its
  operations.register("wrapKey"/"unwrapKey") handlers were never dispatched,
  since executeOperation is only ever called with encrypt/decrypt/sign/verify/
  digest/generateKey/deriveBits/importKey/exportKey.

- Public subtle.wrapKey/unwrapKey remain fully functional via the standard
  exportKey+encrypt / decrypt+importKey composition in subtleInterface.js.

- Drop src/wrapKey.js from the build.mjs fullBuild list.

- Remove the now-orphaned keyToJwkBytes serializer and its stringToArray
  helper from src/jwk.js (keyToJwk/jwkToKey are unaffected).

- Remove the dead wrapKey/unwrapKey entries from subtleParametersSets and the
  dead operationName === "wrapKey" branch in executeOperation.

Author: ljoy913

build.mjs

@@ -75,7 +75,6 @@ const fullBuild = [
     "src/subtle/workerManager.js",
     "src/subtle/subtleInterface.js",
     "src/subtle/tail.js",
-    "src/wrapKey.js",
     "src/bundleTail.js",
     "src/subtle/promises.js",
 ];

src/jwk.js

@@ -20,21 +20,6 @@ var msrcryptoJwk = (function() {
 
     var utils = msrcryptoUtilities;
 
-    function stringToArray(stringData) {
-
-        var result = [];
-
-        for (var i = 0; i < stringData.length; i++) {
-            result[i] = stringData.charCodeAt(i);
-        }
-
-        if (result[result.length - 1] === 0) {
-            result.pop();
-        }
-
-        return result;
-    }
-
     function getKeyType(keyHandle) {
 
         var algType = keyHandle.algorithm.name.slice(0, 3).toUpperCase();
@@ -124,34 +109,6 @@ var msrcryptoJwk = (function() {
         return key;
     }
 
-    function keyToJwkBytes(keyHandle, keyData) {
-
-        var key = {};
-
-        key.kty = getKeyType(keyHandle);
-        key.extractable = keyHandle.extractable;
-
-        // Using .pop to determine if a property value is an array.
-        if (keyData.pop) {
-            key.k = utils.toBase64(keyData, true);
-        } else {
-            // Convert the base64Url properties to byte arrays
-            for (var property in keyData) {
-                if (keyData[property].pop) {
-                    key[property] = utils.toBase64(keyData[property], true);
-                }
-            }
-        }
-
-        if (keyHandle.algorithm.namedCurve) {
-            key.crv = keyHandle.algorithm.namedCurve;
-        }
-
-        var stringData = JSON.stringify(key, null, "\t");
-
-        return stringToArray(stringData);
-    }
-
     // 'jwkKeyData' is an array of bytes. Each byte is a charCode for a json key string
     function jwkToKey(keyData, algorithm, propsToArray) {
         // Convert the json string to an object
@@ -170,7 +127,6 @@ var msrcryptoJwk = (function() {
     }
 
     return {
-        keyToJwkBytes: keyToJwkBytes,
         keyToJwk: keyToJwk,
         jwkToKey: jwkToKey
     };

src/subtle/subtleInterface.js

@@ -51,9 +51,7 @@ var subtleParametersSets = {
     importKeyJwk: [4, 5, 0, 10, 11],
     exportKey: [0, 4, 1, 6, 7],
     deriveKey: [0, 1, 8, 6, 7],
-    deriveBits: [0, 1, 9],
-    wrapKey: [1, 1, 0],
-    unwrapKey: [2, 0, 1, 6, 7]
+    deriveBits: [0, 1, 9]
 };
 
 // Looks up the stored key data for a given keyHandle
@@ -200,7 +198,7 @@ function executeOperation(operationName, parameterSet, keyFunc) {
 
         // Run the crypto now if a buffer is supplied
         //   else wait until process() and finish() are called.
-        if (keyFunc || pc.buffer || operationName === "deriveBits" || operationName === "wrapKey") {
+        if (keyFunc || pc.buffer || operationName === "deriveBits") {
             workerManager.runJob(op, pc);
         }