crypto_hash.h

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// Copyright (C) 2014-2017 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#include <util/buffer.h>

#include <boost/noncopyable.hpp>

#include <cryptolink/cryptolink.h>

#ifndef ISC_CRYPTO_HASH_H
#define ISC_CRYPTO_HASH_H

namespace isc {
namespace cryptolink {

class HashImpl;

class Hash : private boost::noncopyable {
private:
    Hash(const HashAlgorithm hash_algorithm);

    friend Hash* CryptoLink::createHash(const HashAlgorithm);

public:
    ~Hash();

    HashAlgorithm getHashAlgorithm() const;

    size_t getOutputLength() const;

    void update(const void* data, const size_t len);

    void final(isc::util::OutputBuffer& result, size_t len);

    void final(void* result, size_t len);

    std::vector<uint8_t> final(size_t len);

private:
    HashImpl* impl_;
};

void digest(const void* data,
            const size_t data_len,
            const HashAlgorithm hash_algorithm,
            isc::util::OutputBuffer& result,
            size_t len = 0);

void deleteHash(Hash* hash);

} // namespace cryptolink
} // namespace isc

#endif // ISC_CRYPTO_HASH_H