VirgilPBE.h

#ifndef VIRGIL_CRYPTO_VIRGIL_PBE_H
#define VIRGIL_CRYPTO_VIRGIL_PBE_H

#include <cstddef>

#include <virgil/crypto/VirgilByteArray.h>
#include <virgil/crypto/foundation/asn1/VirgilAsn1Compatible.h>

namespace virgil { namespace crypto { namespace foundation {

class VirgilPBEImpl;

class VirgilPBE : public virgil::crypto::foundation::asn1::VirgilAsn1Compatible {
public:
    enum {
        kIterationCountMin = 1024
    };
public:

    static VirgilPBE pkcs5(const virgil::crypto::VirgilByteArray& salt, size_t iterationCount = kIterationCountMin);

    static VirgilPBE pkcs12(const virgil::crypto::VirgilByteArray& salt, size_t iterationCount = kIterationCountMin);


    VirgilPBE();

    virtual ~VirgilPBE() throw();


    virgil::crypto::VirgilByteArray encrypt(
            const virgil::crypto::VirgilByteArray& data,
            const virgil::crypto::VirgilByteArray& pwd) const;

    virgil::crypto::VirgilByteArray decrypt(
            const virgil::crypto::VirgilByteArray& data,
            const virgil::crypto::VirgilByteArray& pwd) const;

    VirgilPBE(const VirgilPBE& other);

    VirgilPBE& operator=(const VirgilPBE& rhs);

    virtual size_t asn1Write(
            virgil::crypto::foundation::asn1::VirgilAsn1Writer& asn1Writer,
            size_t childWrittenBytes = 0) const;

    virtual void asn1Read(virgil::crypto::foundation::asn1::VirgilAsn1Reader& asn1Reader);
private:
    explicit VirgilPBE(int type, const virgil::crypto::VirgilByteArray& salt, size_t iterationCount);

    void checkState() const;

    virgil::crypto::VirgilByteArray process(
            const virgil::crypto::VirgilByteArray& data,
            const virgil::crypto::VirgilByteArray& pwd, int mode) const;

private:
    VirgilPBEImpl* impl_;
};

}}}

#endif /* VIRGIL_CRYPTO_VIRGIL_PBE_H */