rsa.h

/*
**  UICore
**  Copyright (c) 1997-2015 The UICore Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries UICore may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Mark Page
**    Michael J. Fromberger
*/

// This class is based on the original MPI library (not NSS, because of license restrictions) with some modifications.
// Some ideas and algorithms are from NSS (Netscape Security Suite).  Where they have been used, the function contains a reference note
//
// Note, since September 2011, I believe the MPI homepage is now: http://spinning-yarns.org/michael/mpi/
// The license is as follows
// This software was written by Michael J. Fromberger,
//   http://www.dartmouth.edu/~sting/
//
// See the MPI home page at
//   http://www.dartmouth.edu/~sting/mpi/
//
// This software is in the public domain.  It is entirely free, and you
// may use it and/or redistribute it for whatever purpose you choose;
// however, as free software, it is provided without warranty of any
// kind, not even the implied warranty of merchantability or fitness for
// a particular purpose.

#pragma once

#include "secret.h"
#include "../System/databuffer.h"

namespace uicore
{
    class Random;

    class RSA
    {
    public:
        static void create_keypair(Random &random, SecretPtr &out_private_exponent, DataBufferPtr &out_public_exponent, DataBufferPtr &out_modulus, int key_size_in_bits = 1024, int public_exponent_value = 65537);

        static DataBufferPtr encrypt(int block_type, Random &random, const DataBufferPtr &in_public_exponent, const DataBufferPtr &in_modulus, const SecretPtr &in_data);

        static DataBufferPtr encrypt(int block_type, Random &random, const void *in_public_exponent, unsigned int in_public_exponent_size, const void *in_modulus, unsigned int in_modulus_size, const void *in_data, unsigned int in_data_size);

        static SecretPtr decrypt(const SecretPtr &in_private_exponent, const DataBufferPtr &in_modulus, const DataBufferPtr &in_data);

        static SecretPtr decrypt(const SecretPtr &in_private_exponent, const void *in_modulus, unsigned int in_modulus_size, const void *in_data, unsigned int in_data_size);
    };
}