/*
 * Copyright (c) 2012, Code Aurora Forum. All rights reserved.
 *
 * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
 *
 *
 * Permission to use, copy, modify, and/or distribute this software for
 * any purpose with or without fee is hereby granted, provided that the
 * above copyright notice and this permission notice appear in all
 * copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * */
#if !defined( __VOS_UTILS_H )
#define __VOS_UTILS_H
 
/**=========================================================================
  
  \file  vos_utils.h
  
  \brief virtual Operating System Services (vOSS) utility APIs
               
   Various utility functions
  
   Copyright 2008 (c) Qualcomm, Incorporated.  All Rights Reserved.
   
   Qualcomm Confidential and Proprietary.
  
  ========================================================================*/

/* $Header$ */

/*--------------------------------------------------------------------------
  Include Files
  ------------------------------------------------------------------------*/
#include <vos_types.h>
#include <vos_status.h>
//#include <Wincrypt.h>

/*-------------------------------------------------------------------------- 
  Preprocessor definitions and constants
  ------------------------------------------------------------------------*/
#define VOS_DIGEST_SHA1_SIZE    20
#define VOS_DIGEST_MD5_SIZE     16

/*-------------------------------------------------------------------------- 
  Type declarations
  ------------------------------------------------------------------------*/


/*------------------------------------------------------------------------- 
  Function declarations and documenation
  ------------------------------------------------------------------------*/

VOS_STATUS vos_crypto_init( v_U32_t *phCryptProv );

VOS_STATUS vos_crypto_deinit( v_U32_t hCryptProv );


/**
 * vos_rand_get_bytes

 * FUNCTION:
 * Returns cryptographically secure pseudo-random bytes.
 *
 *
 * @param pbBuf - the caller allocated location where the bytes should be copied
 * @param numBytes the number of bytes that should be generated and
 * copied
 * 
 * @return VOS_STATUS_SUCCSS if the operation succeeds
*/
VOS_STATUS vos_rand_get_bytes( v_U32_t handle, v_U8_t *pbBuf, v_U32_t numBytes );


/**
 * vos_sha1_hmac_str
 *
 * FUNCTION:
 * Generate the HMAC-SHA1 of a string given a key.
 *
 * LOGIC:
 * Standard HMAC processing from RFC 2104. The code is provided in the
 * appendix of the RFC.
 *
 * ASSUMPTIONS:
 * The RFC is correct.
 *
 * @param text text to be hashed
 * @param textLen length of text
 * @param key key to use for HMAC
 * @param keyLen length of key
 * @param digest holds resultant SHA1 HMAC (20B)
 *
 * @return VOS_STATUS_SUCCSS if the operation succeeds
 *
 */
VOS_STATUS vos_sha1_hmac_str(v_U32_t cryptHandle, /* Handle */
           v_U8_t *text, /* pointer to data stream */
           v_U32_t textLen, /* length of data stream */
           v_U8_t *key, /* pointer to authentication key */
           v_U32_t keyLen, /* length of authentication key */
           v_U8_t digest[VOS_DIGEST_SHA1_SIZE]);/* caller digest to be filled in */

/**
 * vos_md5_hmac_str
 *
 * FUNCTION:
 * Generate the HMAC-MD5 of a string given a key.
 *
 * LOGIC:
 * Standard HMAC processing from RFC 2104. The code is provided in the
 * appendix of the RFC.
 *
 * ASSUMPTIONS:
 * The RFC is correct.
 *
 * @param text text to be hashed
 * @param textLen length of text
 * @param key key to use for HMAC
 * @param keyLen length of key
 * @param digest holds resultant MD5 HMAC (16B)
 *
 * @return VOS_STATUS_SUCCSS if the operation succeeds
 *
 */
VOS_STATUS vos_md5_hmac_str(v_U32_t cryptHandle, /* Handle */
           v_U8_t *text, /* pointer to data stream */
           v_U32_t textLen, /* length of data stream */
           v_U8_t *key, /* pointer to authentication key */
           v_U32_t keyLen, /* length of authentication key */
           v_U8_t digest[VOS_DIGEST_MD5_SIZE]);/* caller digest to be filled in */


VOS_STATUS vos_encrypt_AES(v_U32_t cryptHandle, /* Handle */
                           v_U8_t *pText, /* pointer to data stream */
                           v_U8_t *Encrypted,
                           v_U8_t *pKey); /* pointer to authentication key */


VOS_STATUS vos_decrypt_AES(v_U32_t cryptHandle, /* Handle */
                           v_U8_t *pText, /* pointer to data stream */
                           v_U8_t *pDecrypted,
                           v_U8_t *pKey); /* pointer to authentication key */

#endif // #if !defined __VOSS_UTILS_H