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// Copyright (c) 2012 The Chromium 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 CHROME_BROWSER_NACL_HOST_NACL_VALIDATION_CACHE_H_
#define CHROME_BROWSER_NACL_HOST_NACL_VALIDATION_CACHE_H_
#pragma once
#include "base/memory/mru_cache.h"
class Pickle;
class NaClValidationCache {
public:
NaClValidationCache();
~NaClValidationCache();
// Get the key used for HMACing validation signatures. This should be a
// string of cryptographically secure random bytes.
const std::string& GetValidationCacheKey() const {
return validation_cache_key_;
}
// Is the validation signature in the database?
bool QueryKnownToValidate(const std::string& signature);
// Put the validation signature in the database.
void SetKnownToValidate(const std::string& signature);
// Should the cache be used?
bool IsEnabled() {
return enabled_;
}
private:
typedef base::HashingMRUCache<std::string, bool> ValidationCacheType;
ValidationCacheType validation_cache_;
std::string validation_cache_key_;
bool enabled_;
DISALLOW_COPY_AND_ASSIGN(NaClValidationCache);
};
#endif // CHROME_BROWSER_NACL_HOST_NACL_VALIDATION_CACHE_H_
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