VirgilChunkCipher.h

#ifndef VIRGIL_CHUNK_CIPHER_H
#define VIRGIL_CHUNK_CIPHER_H

#include <cstddef>

#include <virgil/crypto/VirgilCipherBase.h>
#include <virgil/crypto/VirgilByteArray.h>

namespace virgil { namespace crypto {

class VirgilChunkCipher : public VirgilCipherBase {
public:
    enum {
        kPreferredChunkSize = 1024 * 1024 - 1 
    };
public:
    size_t startEncryption(size_t preferredChunkSize = kPreferredChunkSize);

    size_t startDecryptionWithKey(
            const VirgilByteArray& recipientId, const VirgilByteArray& privateKey,
            const VirgilByteArray& privateKeyPassword = VirgilByteArray());

    size_t startDecryptionWithPassword(const VirgilByteArray& pwd);

    VirgilByteArray process(const VirgilByteArray& data);

    void finish();

    virtual ~VirgilChunkCipher() throw();

private:
    void storeChunkSize(size_t chunkSize);

    size_t retrieveChunkSize() const;
};

}}

#endif /* VIRGIL_CHUNK_CIPHER_H */