////////////////////////////////////////////////////////////////////////////////
// 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.
////////////////////////////////////////////////////////////////////////////////

#ifndef COMMON_SIGNER_PUBLIC_KEY_H_
#define COMMON_SIGNER_PUBLIC_KEY_H_

#include <string>

#include "common/hash_algorithm.h"
#include "protos/public/drm_certificate.pb.h"

namespace widevine {

// SignerPublicKey is implemented for each provisioning key type that are
// defined in video/widevine/proto/public.drm_certificate.proto.
class SignerPublicKey {
 public:
  SignerPublicKey() = default;
  virtual ~SignerPublicKey() = default;
  SignerPublicKey(const SignerPublicKey&) = delete;
  SignerPublicKey& operator=(const SignerPublicKey&) = delete;

  // Verify message using |signer_public_key_| and |hash_algorithm|.
  virtual bool VerifySignature(const std::string& message,
                               HashAlgorithm hash_algorithm,
                               const std::string& signature) const = 0;

  // A factory method to create a SignerPublicKey. The |algorithm| is used to
  // create an appropriate SignerPublicKey for the key type.
  // The returned pointer is a nullptr if the key cannot be deserialized.
  static std::unique_ptr<SignerPublicKey> Create(
      const std::string& signer_public_key,
      DrmCertificate::Algorithm algorithm);
};

}  // namespace widevine
#endif  // COMMON_SIGNER_PUBLIC_KEY_H_