third_party/WebKit/LayoutTests/crypto/subtle/hkdf/deriveBits.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script src="../../../resources/js-test.js"></script>
   5 <script src="../resources/common.js"></script>
   6 </head>
   7 <body>
   8 <p id="description"></p>
   9 <div id="console"></div>
  10
  11 <script>
  12 description("Test that HKDF does not support methods it should not support.");
  13
  14 jsTestIsAsync = true;
  15
  16 kHkdfKey = "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b";
  17
  18 kHkdfAlgorithm = {
  19     name: "HKDF",
  20     hash: "SHA-256",
  21     salt: new Uint8Array(),
  22     info: new Uint8Array()
  23 };
  24
  25 var extractable = true;
  26 Promise.resolve(null).then(function(result) {
  27     // Set up the test by creating an HKDF key.
  28     return crypto.subtle.importKey("raw", hexStringToUint8Array(kHkdfKey), {name: "HKDF"}, extractable, ['deriveKey', 'deriveBits']);
  29 }).then(function(result) {
  30     baseKey = result;
  31
  32     debug("Derive 0 bits from the HKDF key");
  33     return crypto.subtle.deriveBits(kHkdfAlgorithm, baseKey, 0);
  34 }).then(function(result) {
  35     derivedBits = result;
  36
  37     shouldBe("derivedBits.byteLength", "0");
  38
  39     debug("Derive 4 bits from the HKDF key");
  40     return crypto.subtle.deriveBits(kHkdfAlgorithm, baseKey, 4);
  41 }).then(function(result) {
  42     derivedBits = new DataView(result);
  43
  44     shouldBe("derivedBits.byteLength", "1");
  45     // The last 4 bits should be zeroes.
  46     shouldBe("derivedBits.getUint8(0)", "0x80");
  47
  48 }).then(finishJSTest, failAndFinishJSTest);
  49
  50 </script>
  51
  52 </body>
  53 </html>