1 files changed, 98 insertions, 0 deletions
diff --git a/security/manager/ssl/OSKeyStore.h b/security/manager/ssl/OSKeyStore.h
new file mode 100644
index 0000000000..8094b448d9
--- /dev/null
+++ b/security/manager/ssl/OSKeyStore.h
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; 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/. */
+
+// Generic key store implementation for platforms that we don't support with OS
+// specific implementations.
+
+#ifndef OSKeyStore_h
+#define OSKeyStore_h
+
+#include "nsCOMPtr.h"
+#include "nsIOSKeyStore.h"
+#include "nsString.h"
+#include "ScopedNSSTypes.h"
+
+#include <memory>
+#include <vector>
+
+class AbstractOSKeyStore {
+ public:
+  // Retrieve a secret with the given label.
+  virtual nsresult RetrieveSecret(const nsACString& aLabel,
+                                  /* out */ nsACString& aSecret) = 0;
+  // Store a new secret with the given label.
+  virtual nsresult StoreSecret(const nsACString& secret,
+                               const nsACString& label) = 0;
+  // Delete the secret with the given label.
+  virtual nsresult DeleteSecret(const nsACString& label) = 0;
+  virtual ~AbstractOSKeyStore() = default;
+
+  // Returns true if the secret with the given label is available in the key
+  // store, false otherwise.
+  virtual bool SecretAvailable(const nsACString& label);
+  // Perform encryption or decryption operation with the given secret and input
+  // bytes. The output is written in outBytes. This function can make use of the
+  // AesGcm class to use NSS for encryption and decryption.
+  virtual nsresult EncryptDecrypt(const nsACString& label,
+                                  const std::vector<uint8_t>& inBytes,
+                                  std::vector<uint8_t>& outBytes, bool encrypt);
+
+  size_t GetKeyByteLength() { return mKeyByteLength; }
+
+ protected:
+  /* These helper functions are implemented in OSKeyStore.cpp and implement
+   * common functionality of the abstract key store to encrypt and decrypt.
+   */
+  nsresult DoCipher(const mozilla::UniquePK11SymKey& aSymKey,
+                    const std::vector<uint8_t>& inBytes,
+                    std::vector<uint8_t>& outBytes, bool aEncrypt);
+  nsresult BuildAesGcmKey(std::vector<uint8_t> keyBytes,
+                          /* out */ mozilla::UniquePK11SymKey& aKey);
+
+ private:
+  const size_t mKeyByteLength = 16;
+  const size_t mIVLength = 12;
+};
+
+#define NS_OSKEYSTORE_CONTRACTID "@mozilla.org/security/oskeystore;1"
+#define NS_OSKEYSTORE_CID                            \
+  {                                                  \
+    0x57972956, 0x5718, 0x42d2, {                    \
+      0x80, 0x70, 0xb3, 0xfc, 0x72, 0x21, 0x2e, 0xaf \
+    }                                                \
+  }
+
+nsresult GetPromise(JSContext* aCx,
+                    /* out */ RefPtr<mozilla::dom::Promise>& aPromise);
+
+class OSKeyStore final : public nsIOSKeyStore {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIOSKEYSTORE
+
+  OSKeyStore();
+  nsresult GenerateSecret(const nsACString& aLabel,
+                          /* out */ nsACString& aRecoveryPhrase);
+  nsresult SecretAvailable(const nsACString& aLabel,
+                           /* out */ bool* aAvailable);
+  nsresult RecoverSecret(const nsACString& aLabel,
+                         const nsACString& aRecoveryPhrase);
+  nsresult DeleteSecret(const nsACString& aLabel);
+  nsresult EncryptBytes(const nsACString& aLabel,
+                        const std::vector<uint8_t>& aInBytes,
+                        /*out*/ nsACString& aEncryptedBase64Text);
+  nsresult DecryptBytes(const nsACString& aLabel,
+                        const nsACString& aEncryptedBase64Text,
+                        /*out*/ uint32_t* outLen,
+                        /*out*/ uint8_t** outBytes);
+
+ private:
+  ~OSKeyStore() = default;
+
+  std::unique_ptr<AbstractOSKeyStore> mKs;
+};
+
+#endif  // OSKeyStore_h