Replace hardcoded parameters

common/fake_ec_key_source.h

@@ -0,0 +1,53 @@
+////////////////////////////////////////////////////////////////////////////////
+// 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:
+//   Declaration for fake EC key source used for testing.
+
+#ifndef COMMON_FAKE_EC_KEY_SOURCE_H_
+#define COMMON_FAKE_EC_KEY_SOURCE_H_
+
+#include <map>
+#include <string>
+
+#include "common/ec_key_source.h"
+#include "common/ec_test_keys.h"
+
+namespace widevine {
+
+// This is a fake implementation of the ECKeySource.  It returns the values
+// specified in ec_test_keys.h.
+class FakeECKeySource : public ECKeySource {
+ public:
+  FakeECKeySource();
+  FakeECKeySource(const FakeECKeySource&) = delete;
+  FakeECKeySource& operator=(const FakeECKeySource&) = delete;
+
+  // This method allows a caller to specify which keys to return from GetKeys.
+  // This overrides the default test keys.
+  bool SetKey(ECPrivateKey::EllipticCurve curve, const std::string& private_key,
+              const std::string& public_key);
+
+  // Gets precomputed test keys based on |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:
+  std::map<ECPrivateKey::EllipticCurve, std::pair<std::string, std::string>>
+      test_keys_;
+};
+
+}  // namespace widevine
+
+#endif  // COMMON_FAKE_EC_KEY_SOURCE_H_