/Users/baford/proj/netsteria/sst/lib/sha2.h

#ifndef SST_SHA2_H
#define SST_SHA2_H

#include <QIODevice>

#include <openssl/fips_sha.h>

class QByteArray;


namespace SST {


struct SecureHash : public QIODevice
{
        SecureHash(QObject *parent = NULL);
        SecureHash(const SecureHash &other);

        bool isSequential() const;
        bool open(OpenMode mode);
        qint64 readData(char * data, qint64 maxSize);

        inline void init() { reset(); }
        inline void update(const void *buf, size_t size)
                { writeData((const char*)buf, size); }
        inline void update(const QByteArray &buf)
                { writeData(buf.constData(), buf.size()); }

        virtual int outSize() = 0;
        virtual QByteArray final() = 0;
};

struct Sha256 : public SecureHash
{
        SHA256_CTX ctx;

        Sha256(QObject *parent = NULL);
        int outSize();
        bool reset();
        qint64 writeData(const char *data, qint64 len);
        QByteArray final();

        static QByteArray hash(const void*, size_t);
        static QByteArray hash(const QByteArray &);
};

struct Sha384 : public SecureHash
{
        SHA512_CTX ctx;

        Sha384(QObject *parent = NULL);
        int outSize();
        bool reset();
        qint64 writeData(const char *data, qint64 len);
        QByteArray final();

        static QByteArray hash(const void*, size_t);
        static QByteArray hash(const QByteArray &);
};

struct Sha512 : public SecureHash
{
        SHA512_CTX ctx;

        Sha512(QObject *parent = NULL);
        int outSize();
        bool reset();
        qint64 writeData(const char *data, qint64 len);
        QByteArray final();

        static QByteArray hash(const void*, size_t);
        static QByteArray hash(const QByteArray &);
};

} // namespace SST

#endif /* SST_SHA2_H */

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