LibWeb: Add the CryptoKey interface

Author: https://github.com/stelar7
Commit: https://github.com/SerenityOS/serenity/commit/a8ddf6c2a4
Pull-request: https://github.com/SerenityOS/serenity/pull/22346
Reviewed-by: https://github.com/ADKaster

Meta/gn/secondary/Userland/Libraries/LibWeb/Crypto/BUILD.gn

@@ -4,6 +4,8 @@ source_set("Crypto") {
   sources = [
     "Crypto.cpp",
     "Crypto.h",
+    "CryptoKey.cpp",
+    "CryptoKey.h",
     "SubtleCrypto.cpp",
     "SubtleCrypto.h",
   ]

Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni

@@ -26,6 +26,7 @@ standard_idl_files = [
   "//Userland/Libraries/LibWeb/Animations/DocumentTimeline.idl",
   "//Userland/Libraries/LibWeb/Clipboard/Clipboard.idl",
   "//Userland/Libraries/LibWeb/Crypto/Crypto.idl",
+  "//Userland/Libraries/LibWeb/Crypto/CryptoKey.idl",
   "//Userland/Libraries/LibWeb/Crypto/SubtleCrypto.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSConditionRule.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.idl",

Userland/Libraries/LibWeb/CMakeLists.txt

@@ -24,6 +24,7 @@ set(SOURCES
     Bindings/PlatformObject.cpp
     Clipboard/Clipboard.cpp
     Crypto/Crypto.cpp
+    Crypto/CryptoKey.cpp
     Crypto/SubtleCrypto.cpp
     CSS/Angle.cpp
     CSS/CalculatedOr.cpp

Userland/Libraries/LibWeb/Crypto/CryptoKey.cpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2023, stelar7 <dudedbz@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Crypto/CryptoKey.h>
+
+namespace Web::Crypto {
+
+JS_DEFINE_ALLOCATOR(CryptoKey);
+
+JS::NonnullGCPtr<CryptoKey> CryptoKey::create(JS::Realm& realm)
+{
+    return realm.heap().allocate<CryptoKey>(realm, realm);
+}
+
+CryptoKey::CryptoKey(JS::Realm& realm)
+    : PlatformObject(realm)
+    , m_algorithm(Object::create(realm, nullptr))
+    , m_usages(Object::create(realm, nullptr))
+{
+}
+
+CryptoKey::~CryptoKey() = default;
+
+void CryptoKey::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::CryptoKeyPrototype>(realm, "CryptoKey"_fly_string));
+}
+
+void CryptoKey::visit_edges(Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_algorithm);
+    visitor.visit(m_usages);
+}
+
+}

Userland/Libraries/LibWeb/Crypto/CryptoKey.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2023, stelar7 <dudedbz@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Forward.h>
+#include <LibJS/Heap/GCPtr.h>
+#include <LibWeb/Bindings/CryptoKeyPrototype.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/PlatformObject.h>
+
+namespace Web::Crypto {
+
+class CryptoKey final : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(CryptoKey, Bindings::PlatformObject);
+    JS_DECLARE_ALLOCATOR(CryptoKey);
+
+public:
+    [[nodiscard]] static JS::NonnullGCPtr<CryptoKey> create(JS::Realm&);
+
+    virtual ~CryptoKey() override;
+
+    bool extractable() const { return m_extractable; }
+    Bindings::KeyType type() const { return m_type; }
+    Object const* algorithm() const { return m_algorithm.ptr(); }
+    Object const* usages() const { return m_usages.ptr(); }
+
+    void set_extractable(bool extractable) { m_extractable = extractable; }
+    void set_type(Bindings::KeyType type) { m_type = type; }
+    void set_algorithm(JS::NonnullGCPtr<Object> algorithm) { m_algorithm = move(algorithm); }
+    void set_usages(JS::NonnullGCPtr<Object> usages) { m_usages = move(usages); }
+
+private:
+    explicit CryptoKey(JS::Realm&);
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Visitor&) override;
+
+    Bindings::KeyType m_type;
+    bool m_extractable { false };
+    JS::NonnullGCPtr<Object> m_algorithm;
+    JS::NonnullGCPtr<Object> m_usages;
+};
+
+}

Userland/Libraries/LibWeb/Crypto/CryptoKey.idl

@@ -0,0 +1,12 @@
+enum KeyType { "public", "private", "secret" };
+
+enum KeyUsage { "encrypt", "decrypt", "sign", "verify", "deriveKey", "deriveBits", "wrapKey", "unwrapKey" };
+
+// https://w3c.github.io/webcrypto/#cryptokey-interface
+[SecureContext,Exposed=(Window,Worker),Serializable]
+interface CryptoKey {
+  readonly attribute KeyType type;
+  readonly attribute boolean extractable;
+  readonly attribute object algorithm;
+  readonly attribute object usages;
+};

Userland/Libraries/LibWeb/idl_files.cmake

@@ -9,6 +9,7 @@ libweb_js_bindings(Animations/DocumentTimeline)
 libweb_js_bindings(Animations/KeyframeEffect)
 libweb_js_bindings(Clipboard/Clipboard)
 libweb_js_bindings(Crypto/Crypto)
+libweb_js_bindings(Crypto/CryptoKey)
 libweb_js_bindings(Crypto/SubtleCrypto)
 libweb_js_bindings(CSS/CSSConditionRule)
 libweb_js_bindings(CSS/CSSFontFaceRule)