Replace hardcoded parameters

common/local_ec_key_source.h

@@ -0,0 +1,42 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2019 Google LLC.
+//
+// This software is licensed under the terms defined in the Widevine Master
+// License Agreement. For a copy of this agreement, please contact
+// widevine-licensing@google.com.
+////////////////////////////////////////////////////////////////////////////////
+//
+// Description:
+//   Class to generate EC keys locally.
+
+#ifndef COMMON_LOCAL_EC_KEY_SOURCE_H_
+#define COMMON_LOCAL_EC_KEY_SOURCE_H_
+
+#include "common/ec_key.h"
+#include "common/ec_key_source.h"
+
+namespace widevine {
+
+// Class which generates new EC keys.
+class LocalECKeySource : public ECKeySource {
+ public:
+  LocalECKeySource() = default;
+
+  // Creates an EC key pair using openssl and |curve|.
+  // Parameter |curve| is a standard curve which defines the parameters of the
+  // key generation.
+  // Parameter |private_key| is the serialized EC private key.
+  // Parameter |public_key| is the serialized EC public key.
+  // Caller retains ownership of all pointers and they cannot be nullptr.
+  // Returns true if successful, false otherwise.
+  bool GetECKey(ECPrivateKey::EllipticCurve curve, std::string* private_key,
+                std::string* public_key) override;
+
+ private:
+  LocalECKeySource(const LocalECKeySource&) = delete;
+  LocalECKeySource& operator=(const LocalECKeySource&) = delete;
+};
+
+}  // namespace widevine
+
+#endif  // COMMON_LOCAL_EC_KEY_SOURCE_H_