1 files changed, 115 insertions, 0 deletions
diff --git a/dom/crypto/test/util.js b/dom/crypto/test/util.js
new file mode 100644
index 000000000..f7b4c260f
--- /dev/null
+++ b/dom/crypto/test/util.js
@@ -0,0 +1,115 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var util = {
+  // Compare the contents of two ArrayBuffer(View)s
+  memcmp: function util_memcmp(x, y) {
+    if (!x || !y) { return false; }
+
+    var xb = new Uint8Array(x);
+    var yb = new Uint8Array(y);
+    if (x.byteLength !== y.byteLength) { return false; }
+
+    for (var i=0; i<xb.byteLength; ++i) {
+      if (xb[i] !== yb[i]) {
+        return false;
+      }
+    }
+    return true;
+  },
+
+  // Convert an ArrayBufferView to a hex string
+  abv2hex: function util_abv2hex(abv) {
+    var b = new Uint8Array(abv);
+    var hex = "";
+    for (var i=0; i <b.length; ++i) {
+      var zeropad = (b[i] < 0x10) ? "0" : "";
+      hex += zeropad + b[i].toString(16);
+    }
+    return hex;
+  },
+
+  // Convert a hex string to an ArrayBufferView
+  hex2abv: function util_hex2abv(hex) {
+    if (hex.length % 2 !== 0) {
+      hex = "0" + hex;
+    }
+
+    var abv = new Uint8Array(hex.length / 2);
+    for (var i=0; i<abv.length; ++i) {
+      abv[i] = parseInt(hex.substr(2*i, 2), 16);
+    }
+    return abv;
+  },
+
+  clone: function (obj) {
+    return new Promise(resolve => {
+      let {port1, port2} = new MessageChannel();
+
+      // Wait for the cloned object to arrive.
+      port1.onmessage = msg => resolve(msg.data);
+
+      // Clone the object.
+      port2.postMessage(obj);
+    });
+  },
+
+  cloneExportCompareKeys: function (key) {
+    return util.clone(key).then(clone => {
+      var exports = [];
+
+      if (key instanceof CryptoKey) {
+        exports.push(crypto.subtle.exportKey("raw", key));
+        exports.push(crypto.subtle.exportKey("raw", clone));
+      } else {
+        exports.push(crypto.subtle.exportKey("spki", key.publicKey));
+        exports.push(crypto.subtle.exportKey("spki", clone.publicKey));
+        exports.push(crypto.subtle.exportKey("pkcs8", key.privateKey));
+        exports.push(crypto.subtle.exportKey("pkcs8", clone.privateKey));
+      }
+
+      return Promise.all(exports).then(pairs => {
+        for (var i = 0; i < pairs.length; i += 2) {
+          if (!util.memcmp(pairs[i], pairs[i + 1])) {
+            throw new Error("keys don't match");
+          }
+        }
+
+        return clone;
+      });
+    });
+  }
+};
+
+function exists(x) {
+  return (x !== undefined);
+}
+
+function hasFields(object, fields) {
+  return fields
+          .map(x => exists(object[x]))
+          .reduce((x,y) => (x && y));
+}
+
+function hasKeyFields(x) {
+  return hasFields(x, ["algorithm", "extractable", "type", "usages"]);
+}
+
+function hasBaseJwkFields(x) {
+  return hasFields(x, ["kty", "alg", "ext", "key_ops"]);
+}
+
+function shallowArrayEquals(x, y) {
+  if (x.length != y.length) {
+    return false;
+  }
+
+  for (i in x) {
+    if (x[i] != y[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}