/* * Copyright (C) 2013 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef WebCryptoKey_h #define WebCryptoKey_h #include "WebCommon.h" #include "WebPrivatePtr.h" namespace blink { enum WebCryptoKeyType { WebCryptoKeyTypeSecret, WebCryptoKeyTypePublic, WebCryptoKeyTypePrivate, }; enum WebCryptoKeyUsage { WebCryptoKeyUsageEncrypt = 1 << 0, WebCryptoKeyUsageDecrypt = 1 << 1, WebCryptoKeyUsageSign = 1 << 2, WebCryptoKeyUsageVerify = 1 << 3, WebCryptoKeyUsageDeriveKey = 1 << 4, WebCryptoKeyUsageWrapKey = 1 << 5, WebCryptoKeyUsageUnwrapKey = 1 << 6, #if INSIDE_BLINK EndOfWebCryptoKeyUsage, #endif }; // A bitfield of WebCryptoKeyUsage typedef int WebCryptoKeyUsageMask; enum WebCryptoKeyFormat { WebCryptoKeyFormatRaw, WebCryptoKeyFormatPkcs8, WebCryptoKeyFormatSpki, WebCryptoKeyFormatJwk, }; class WebCryptoKeyAlgorithm; class WebCryptoKeyPrivate; class WebCryptoKeyHandle; // The WebCryptoKey represents a key from the Web Crypto API: // // https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#key-interface // // WebCryptoKey is just a reference-counted wrapper that manages the lifetime of // a "WebCryptoKeyHandle*". // // WebCryptoKey is: // * Copiable (cheaply) // * Threadsafe if the embedder's WebCryptoKeyHandle is also threadsafe. // // The embedder is responsible for creating all WebCryptoKeys, and therefore can // safely assume any details regarding the type of the wrapped // WebCryptoKeyHandle*. // // If WebCryptoKey "isNull()" then it is invalid to call any of the other // methods on it (other than destruction, assignment, or isNull()). class WebCryptoKey { public: ~WebCryptoKey() { reset(); } WebCryptoKey(const WebCryptoKey& other) { assign(other); } WebCryptoKey& operator=(const WebCryptoKey& other) { assign(other); return *this; } // For an explanation of these parameters see: // https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html#key-interface-members // // Note that the caller is passing ownership of the WebCryptoKeyHandle*. BLINK_PLATFORM_EXPORT static WebCryptoKey create(WebCryptoKeyHandle*, WebCryptoKeyType, bool extractable, const WebCryptoKeyAlgorithm&, WebCryptoKeyUsageMask); BLINK_PLATFORM_EXPORT static WebCryptoKey createNull(); // Returns the opaque key handle that was set by the embedder. // * Safe to downcast to known type (since embedder creates all the keys) // * Returned pointer's lifetime is bound to |this| BLINK_PLATFORM_EXPORT WebCryptoKeyHandle* handle() const; BLINK_PLATFORM_EXPORT WebCryptoKeyType type() const; BLINK_PLATFORM_EXPORT bool extractable() const; BLINK_PLATFORM_EXPORT const WebCryptoKeyAlgorithm& algorithm() const; BLINK_PLATFORM_EXPORT WebCryptoKeyUsageMask usages() const; BLINK_PLATFORM_EXPORT bool isNull() const; private: WebCryptoKey() { } BLINK_PLATFORM_EXPORT void assign(const WebCryptoKey& other); BLINK_PLATFORM_EXPORT void reset(); WebPrivatePtr<WebCryptoKeyPrivate> m_private; }; // Base class for the embedder to define its own opaque key handle. The lifetime // of this object is controlled by WebCryptoKey using reference counting. class WebCryptoKeyHandle { public: virtual ~WebCryptoKeyHandle() { } }; } // namespace blink #endif