libhwsec/error/elliptic_curve_error.h

// Copyright 2021 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef LIBHWSEC_ERROR_ELLIPTIC_CURVE_ERROR_H_
#define LIBHWSEC_ERROR_ELLIPTIC_CURVE_ERROR_H_

#include <memory>
#include <string>

#include "libhwsec/error/tpm_error.h"
#include "libhwsec/hwsec_export.h"

namespace hwsec {

// The collection of elliptic curve error code
enum class EllipticCurveErrorCode {
  kScalarOutOfRange,
};

// An EllipticCurve error.
class HWSEC_EXPORT EllipticCurveError : public TPMErrorBase {
 public:
  using MakeStatusTrait =
      hwsec_foundation::status::DefaultMakeStatus<EllipticCurveError>;

  explicit EllipticCurveError(EllipticCurveErrorCode error_code);
  ~EllipticCurveError() override = default;
  hwsec::TPMRetryAction ToTPMRetryAction() const override;
  EllipticCurveErrorCode ErrorCode() const { return error_code_; }
  hwsec::unified_tpm_error::UnifiedError UnifiedErrorCode() const override {
    hwsec::unified_tpm_error::UnifiedError result =
        hwsec::unified_tpm_error::kUnifiedErrorECBase +
        static_cast<hwsec::unified_tpm_error::UnifiedError>(error_code_);
    DCHECK_LT(result, hwsec::unified_tpm_error::kUnifiedErrorECMax);
    return result | hwsec::unified_tpm_error::kUnifiedErrorBit;
  }

  void LogUnifiedErrorCodeMapping() const override {}

 private:
  const EllipticCurveErrorCode error_code_;
};

}  // namespace hwsec

#endif  // LIBHWSEC_ERROR_ELLIPTIC_CURVE_ERROR_H_