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diff --git a/dom/webidl/SubtleCrypto.webidl b/dom/webidl/SubtleCrypto.webidl
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+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/.
+ *
+ * The origin of this IDL file is
+ * http://www.w3.org/TR/WebCryptoAPI/
+ */
+
+typedef DOMString KeyType;
+typedef DOMString KeyUsage;
+typedef DOMString NamedCurve;
+typedef Uint8Array BigInteger;
+
+/***** Algorithm dictionaries *****/
+
+dictionary Algorithm {
+  required DOMString name;
+};
+
+dictionary AesCbcParams : Algorithm {
+  required BufferSource iv;
+};
+
+dictionary AesCtrParams : Algorithm {
+  required BufferSource counter;
+  [EnforceRange] required octet length;
+};
+
+dictionary AesGcmParams : Algorithm {
+  required BufferSource iv;
+  BufferSource additionalData;
+  [EnforceRange] octet tagLength;
+};
+
+dictionary HmacImportParams : Algorithm {
+  required AlgorithmIdentifier hash;
+};
+
+dictionary Pbkdf2Params : Algorithm {
+  required BufferSource salt;
+  [EnforceRange] required unsigned long iterations;
+  required AlgorithmIdentifier hash;
+};
+
+dictionary RsaHashedImportParams {
+  required AlgorithmIdentifier hash;
+};
+
+dictionary AesKeyGenParams : Algorithm {
+  [EnforceRange] required unsigned short length;
+};
+
+dictionary HmacKeyGenParams : Algorithm {
+  required AlgorithmIdentifier hash;
+  [EnforceRange] unsigned long length;
+};
+
+dictionary RsaHashedKeyGenParams : Algorithm {
+  [EnforceRange] required unsigned long modulusLength;
+  required BigInteger publicExponent;
+  required AlgorithmIdentifier hash;
+};
+
+dictionary RsaOaepParams : Algorithm {
+  BufferSource label;
+};
+
+dictionary RsaPssParams : Algorithm {
+  [EnforceRange] required unsigned long saltLength;
+};
+
+dictionary DhKeyGenParams : Algorithm {
+  required BigInteger prime;
+  required BigInteger generator;
+};
+
+dictionary EcKeyGenParams : Algorithm {
+  required NamedCurve namedCurve;
+};
+
+dictionary AesDerivedKeyParams : Algorithm {
+  [EnforceRange] required unsigned long length;
+};
+
+dictionary HmacDerivedKeyParams : HmacImportParams {
+  [EnforceRange] unsigned long length;
+};
+
+dictionary EcdhKeyDeriveParams : Algorithm {
+  required CryptoKey public;
+};
+
+dictionary DhKeyDeriveParams : Algorithm {
+  required CryptoKey public;
+};
+
+dictionary DhImportKeyParams : Algorithm {
+  required BigInteger prime;
+  required BigInteger generator;
+};
+
+dictionary EcdsaParams : Algorithm {
+  required AlgorithmIdentifier hash;
+};
+
+dictionary EcKeyImportParams : Algorithm {
+  NamedCurve namedCurve;
+};
+
+dictionary HkdfParams : Algorithm {
+  required AlgorithmIdentifier hash;
+  required BufferSource salt;
+  required BufferSource info;
+};
+
+/***** JWK *****/
+
+dictionary RsaOtherPrimesInfo {
+  // The following fields are defined in Section 6.3.2.7 of JSON Web Algorithms
+  required DOMString r;
+  required DOMString d;
+  required DOMString t;
+};
+
+dictionary JsonWebKey {
+  // The following fields are defined in Section 3.1 of JSON Web Key
+  required DOMString kty;
+  DOMString use;
+  sequence<DOMString> key_ops;
+  DOMString alg;
+
+  // The following fields are defined in JSON Web Key Parameters Registration
+  boolean ext;
+
+  // The following fields are defined in Section 6 of JSON Web Algorithms
+  DOMString crv;
+  DOMString x;
+  DOMString y;
+  DOMString d;
+  DOMString n;
+  DOMString e;
+  DOMString p;
+  DOMString q;
+  DOMString dp;
+  DOMString dq;
+  DOMString qi;
+  sequence<RsaOtherPrimesInfo> oth;
+  DOMString k;
+};
+
+
+/***** The Main API *****/
+
+interface CryptoKey {
+  readonly attribute KeyType type;
+  readonly attribute boolean extractable;
+  [Cached, Constant, Throws] readonly attribute object algorithm;
+  [Cached, Constant, Frozen] readonly attribute sequence<KeyUsage> usages;
+};
+
+dictionary CryptoKeyPair {
+  required CryptoKey publicKey;
+  required CryptoKey privateKey;
+};
+
+typedef DOMString KeyFormat;
+typedef (object or DOMString) AlgorithmIdentifier;
+
+[Exposed=(Window,Worker)]
+interface SubtleCrypto {
+  [Throws]
+  Promise<any> encrypt(AlgorithmIdentifier algorithm,
+                       CryptoKey key,
+                       BufferSource data);
+  [Throws]
+  Promise<any> decrypt(AlgorithmIdentifier algorithm,
+                       CryptoKey key,
+                       BufferSource data);
+  [Throws]
+  Promise<any> sign(AlgorithmIdentifier algorithm,
+                     CryptoKey key,
+                     BufferSource data);
+  [Throws]
+  Promise<any> verify(AlgorithmIdentifier algorithm,
+                      CryptoKey key,
+                      BufferSource signature,
+                      BufferSource data);
+  [Throws]
+  Promise<any> digest(AlgorithmIdentifier algorithm,
+                      BufferSource data);
+
+  [Throws]
+  Promise<any> generateKey(AlgorithmIdentifier algorithm,
+                           boolean extractable,
+                           sequence<KeyUsage> keyUsages );
+  [Throws]
+  Promise<any> deriveKey(AlgorithmIdentifier algorithm,
+                         CryptoKey baseKey,
+                         AlgorithmIdentifier derivedKeyType,
+                         boolean extractable,
+                         sequence<KeyUsage> keyUsages );
+  [Throws]
+  Promise<any> deriveBits(AlgorithmIdentifier algorithm,
+                          CryptoKey baseKey,
+                          unsigned long length);
+
+  [Throws]
+  Promise<any> importKey(KeyFormat format,
+                         object keyData,
+                         AlgorithmIdentifier algorithm,
+                         boolean extractable,
+                         sequence<KeyUsage> keyUsages );
+  [Throws]
+  Promise<any> exportKey(KeyFormat format, CryptoKey key);
+
+  [Throws]
+  Promise<any> wrapKey(KeyFormat format,
+                       CryptoKey key,
+                       CryptoKey wrappingKey,
+                       AlgorithmIdentifier wrapAlgorithm);
+
+  [Throws]
+  Promise<any> unwrapKey(KeyFormat format,
+                         BufferSource wrappedKey,
+                         CryptoKey unwrappingKey,
+                         AlgorithmIdentifier unwrapAlgorithm,
+                         AlgorithmIdentifier unwrappedKeyAlgorithm,
+                         boolean extractable,
+                         sequence<KeyUsage> keyUsages );
+};
+