/*
 *
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 *
 * Copyright (c) 1999-2008 Apple Inc.  All Rights Reserved.
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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 */
/*
    File:       md5digest.h

    Contains:   Provides a function to calculate the md5 digest 
                given all the authentication parameters.
                    
*/

#ifndef _MD5DIGEST_H_
#define _MD5DIGEST_H_

#include "StrPtrLen.h"

enum {
    kHashHexLen =   32,
    kHashLen    =   16
};

// HashToString allocates memory for hashStr->Ptr 
void HashToString(unsigned char aHash[kHashLen], StrPtrLen* hashStr);

// allocates memory for hashA1Hex16Bit->Ptr                   
void CalcMD5HA1(StrPtrLen* userName, StrPtrLen* realm, StrPtrLen* userPassword, StrPtrLen* hashA1Hex16Bit);

// allocates memory to hA1->Ptr
void CalcHA1( StrPtrLen* algorithm, 
              StrPtrLen* userName, 
              StrPtrLen* realm,
              StrPtrLen* userPassword, 
              StrPtrLen* nonce, 
              StrPtrLen* cNonce,
              StrPtrLen* hA1
            );

// allocates memory to hA1->Ptr
void CalcHA1Md5Sess(StrPtrLen* hashA1Hex16Bit, StrPtrLen* nonce, StrPtrLen* cNonce, StrPtrLen* hA1);

// allocates memory for requestDigest->Ptr               
void CalcRequestDigest( StrPtrLen* hA1, 
                        StrPtrLen* nonce, 
                        StrPtrLen* nonceCount, 
                        StrPtrLen* cNonce,
                        StrPtrLen* qop,
                        StrPtrLen* method, 
                        StrPtrLen* digestUri, 
                        StrPtrLen* hEntity, 
                        StrPtrLen* requestDigest
                      );


void to64(register char *s, register SInt32 v, register int n);

// Doesn't allocate any memory. The size of the result buffer should be nbytes
void MD5Encode( char *pw, char *salt, char *result, int nbytes);

#endif