/** @file
  RSA Asymmetric Cipher Wrapper Implementation over OpenSSL.

  This file does not provide real capabilities for following APIs in RSA handling:
  1) RsaGetKey
  2) RsaGenerateKey
  3) RsaCheckKey
  4) RsaPkcs1Sign

Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include "InternalCryptLib.h"

/**
  Gets the tag-designated RSA key component from the established RSA context.

  Return FALSE to indicate this interface is not supported.

  @param[in, out]  RsaContext  Pointer to RSA context being set.
  @param[in]       KeyTag      Tag of RSA key component being set.
  @param[out]      BigNumber   Pointer to octet integer buffer.
  @param[in, out]  BnSize      On input, the size of big number buffer in bytes.
                               On output, the size of data returned in big number buffer in bytes.

  @retval FALSE  This interface is not supported.

**/
BOOLEAN
EFIAPI
RsaGetKey (
  IN OUT  VOID         *RsaContext,
  IN      RSA_KEY_TAG  KeyTag,
  OUT     UINT8        *BigNumber,
  IN OUT  UINTN        *BnSize
  )
{
  ASSERT (FALSE);
  return FALSE;
}

/**
  Generates RSA key components.

  Return FALSE to indicate this interface is not supported.

  @param[in, out]  RsaContext           Pointer to RSA context being set.
  @param[in]       ModulusLength        Length of RSA modulus N in bits.
  @param[in]       PublicExponent       Pointer to RSA public exponent.
  @param[in]       PublicExponentSize   Size of RSA public exponent buffer in bytes. 

  @retval FALSE  This interface is not supported.

**/
BOOLEAN
EFIAPI
RsaGenerateKey (
  IN OUT  VOID         *RsaContext,
  IN      UINTN        ModulusLength,
  IN      CONST UINT8  *PublicExponent,
  IN      UINTN        PublicExponentSize
  )
{
  ASSERT (FALSE);
  return FALSE;
}

/**
  Validates key components of RSA context.

  Return FALSE to indicate this interface is not supported.

  @param[in]  RsaContext  Pointer to RSA context to check.

  @retval FALSE  This interface is not supported.

**/
BOOLEAN
EFIAPI
RsaCheckKey (
  IN  VOID  *RsaContext
  )
{
  ASSERT (FALSE);
  return FALSE;
}

/**
  Carries out the RSA-SSA signature generation with EMSA-PKCS1-v1_5 encoding scheme.

  Return FALSE to indicate this interface is not supported.

  @param[in]       RsaContext   Pointer to RSA context for signature generation.
  @param[in]       MessageHash  Pointer to octet message hash to be signed.
  @param[in]       HashSize     Size of the message hash in bytes.
  @param[out]      Signature    Pointer to buffer to receive RSA PKCS1-v1_5 signature.
  @param[in, out]  SigSize      On input, the size of Signature buffer in bytes.
                                On output, the size of data returned in Signature buffer in bytes.

  @retval FALSE  This interface is not supported.

**/
BOOLEAN
EFIAPI
RsaPkcs1Sign (
  IN      VOID         *RsaContext,
  IN      CONST UINT8  *MessageHash,
  IN      UINTN        HashSize,
  OUT     UINT8        *Signature,
  IN OUT  UINTN        *SigSize
  )
{
  ASSERT (FALSE);
  return FALSE;
}