VirgilChunkCipher.h

#ifndef VIRGIL_CHUNK_CIPHER_H
#define VIRGIL_CHUNK_CIPHER_H

#include <cstdlib>

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

namespace virgil { namespace crypto {

class VirgilChunkCipher : public VirgilCipherBase {
public:

    static constexpr size_t kPreferredChunkSize = 1024 * 1024;
public:
    void encrypt(
            VirgilDataSource& source, VirgilDataSink& sink, bool embedContentInfo = true,
            size_t preferredChunkSize = kPreferredChunkSize);

    void decryptWithKey(
            VirgilDataSource& source, VirgilDataSink& sink, const VirgilByteArray& recipientId,
            const VirgilByteArray& privateKey, const VirgilByteArray& privateKeyPassword = VirgilByteArray());

    void decryptWithPassword(VirgilDataSource& source, VirgilDataSink& sink, const VirgilByteArray& pwd);

private:
    void storeChunkSize(size_t chunkSize);

    size_t retrieveChunkSize() const;
    VirgilByteArray tryReadContentInfo(VirgilDataSource& source);
};

}}

#endif /* VIRGIL_CHUNK_CIPHER_H */