xtunnelscvssha1.h

xtunnel nat/fw traversal source code

/*

	File:		XTunnelsCVsSHA1.h

	Contains:   SHA1 routines -- extracted from the VsUtils source tree 03.11.06

	Copyright:  (c) 2003 by Xten Networks, Inc., all rights reserved.

*/

#ifndef XTUNNELSCVSSHA1_H__E8983BF5_8446_4658_ADFB_6622FCCF7E7C_
#define XTUNNELSCVSSHA1_H__E8983BF5_8446_4658_ADFB_6622FCCF7E7C_ 1

#ifdef __MWERKS__
#pragma once
#endif // __MWERKS__

// Windows compatibility defs
#include <stdlib.h>
typedef unsigned char BYTE;
typedef unsigned long DWORD;

#if VS_TARGET_OS_MAC
#if _MSL_USING_MW_C_HEADERS
// match <cstdint_mach.h>
typedef unsigned long int uint32_t;
typedef short int int_least16_t;
#else
// match BSD
typedef unsigned int uint32_t;
typedef short int_least16_t;
#endif // _MSL_USING_MW_C_HEADERS
#else
typedef unsigned int uint32_t;
//typedef signed int int_least16_t;
// match stdint.h declaration
typedef short int int_least16_t;
#endif // VS_TARGET_OS_MAC
typedef unsigned char uint8_t;

#define SHA1HashSize 20

#ifndef VS_IFDEF_SHA1_CONTEXT_STRUCT
#define VS_IFDEF_SHA1_CONTEXT_STRUCT

/*
 *  This structure will hold context information for the SHA-1
 *  hashing operation
 */
typedef struct SHA1Context
{
    uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest  */

    uint32_t Length_Low;            /* Message length in bits      */
    uint32_t Length_High;           /* Message length in bits      */

                               /* Index into message block array   */
    int_least16_t Message_Block_Index;
    uint8_t Message_Block[64];      /* 512-bit message blocks      */

    int Computed;               /* Is the digest computed?         */
    int Corrupted;             /* Is the message digest corrupted? */
} SHA1Context;


#endif // VS_IFDEF_SHA1_CONTEXT_STRUCT


class CVsSHA1 
{

public:
    CVsSHA1() {Init();}
    virtual ~CVsSHA1() {Destroy();}

   virtual bool Read( 
      BYTE  */*pBuffer*/,
      DWORD  /*dwBytesToRead*/,
      DWORD */*pBytesRead*/ = NULL
   ) {return false;} // MD5 is a one-way operation and can not be read, use GetDigest

   virtual bool Write(
      const BYTE *pBuffer,
      DWORD dwBufferLength,
      DWORD *pBytesWritten = NULL
   );

   virtual void Close();

   void GetDigest(char* szOutDigest);

   const BYTE *GetDigestBytes() {return &(m_pMessage_Digest[0]);}
   DWORD GetDigestBytesLength() {return sizeof(m_pMessage_Digest);}

private:
   void Init();
   void Destroy();

private:
   SHA1Context m_tContext;

   uint8_t m_pMessage_Digest[20];
};

void hmac_sha1(
   const BYTE *pInTextBlob,
   DWORD dwInTextBlobLength,
   const BYTE *pInKey,
   DWORD dwInKeyLength,
   unsigned char pOutDigest[20]
);

#endif // XTUNNELSCVSSHA1_H__E8983BF5_8446_4658_ADFB_6622FCCF7E7C_