CryptTools.hxx

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#ifndef INCLUDED_OOX_CRYPTO_CRYPTTOOLS_HXX
#define INCLUDED_OOX_CRYPTO_CRYPTTOOLS_HXX
 
#include <oox/dllapi.h>
#include <sal/types.h>
 
#include <vector>
#include <memory>
 
namespace oox::crypto {
 
template<typename T>
T roundUp(T input, T multiple)
{
    if (input % multiple == 0)
        return input;
    return ((input / multiple) * multiple) + multiple;
}
 
enum class CryptoHashType
{
    SHA1,
    SHA256,
    SHA512
};
 
struct CryptoImpl;
 
class OOX_DLLPUBLIC Crypto
{
public:
    enum CryptoType
    {
        UNKNOWN,
        AES_128_ECB,
        AES_128_CBC,
        AES_256_CBC,
    };
 
protected:
    std::unique_ptr<CryptoImpl> mpImpl;
 
protected:
    Crypto();
 
public:
    virtual ~Crypto();
};
 
class Decrypt final : public Crypto
{
public:
    Decrypt(std::vector<sal_uInt8>& key, std::vector<sal_uInt8>& iv, CryptoType type);
 
    sal_uInt32 update(
                    std::vector<sal_uInt8>& output,
                    std::vector<sal_uInt8>& input,
                    sal_uInt32 inputLength = 0);
 
 
    static sal_uInt32 aes128ecb(
                    std::vector<sal_uInt8>& output,
                    std::vector<sal_uInt8>& input,
                    std::vector<sal_uInt8>& key );
 
};
 
class Encrypt final : public Crypto
{
public:
    Encrypt(std::vector<sal_uInt8>& key, std::vector<sal_uInt8>& iv, CryptoType type);
 
    sal_uInt32 update(
                    std::vector<sal_uInt8>& output,
                    std::vector<sal_uInt8>& input,
                    sal_uInt32 inputLength = 0);
};
 
class OOX_DLLPUBLIC CryptoHash final : public Crypto
{
    sal_Int32 mnHashSize;
public:
    CryptoHash(std::vector<sal_uInt8>& rKey, CryptoHashType eType);
    bool update(std::vector<sal_uInt8>& rInput, sal_uInt32 nInputLength = 0);
    std::vector<sal_uInt8> finalize();
};
 
 
} // namespace oox::crypto
 
#endif
 
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