AppleCSP/MiscCSPAlgs/rc4Context.h

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /*
  20  * rc4Context.h - glue between BlockCrytpor and ssleay RC4 implementation
  21  * Written by Doug Mitchell 4/3/2001
  22  */
  23 #ifndef _RC4_CONTEXT_H_
  24 #define _RC4_CONTEXT_H_
  25
  26 #include "AppleCSPContext.h"
  27 #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacTypes.h>
  28 #include <openssl/rc4.h>
  29
  30 class RC4Context : public AppleCSPContext {
  31 public:
  32         RC4Context(AppleCSPSession &session) :
  33                 AppleCSPContext(session)        { }
  34         ~RC4Context();
  35
  36         // called by CSPFullPluginSession
  37         void init(
  38                 const Context   &context,
  39                 bool encoding = true);
  40         void update(
  41                 void                    *inp,
  42                 size_t                  &inSize,                        // in/out
  43                 void                    *outp,
  44                 size_t                  &outSize);                      // in/out
  45         void final(
  46                 CssmData                &out);
  47
  48         size_t inputSize(
  49                 size_t                  outSize);                       // input for given output size
  50         size_t outputSize(
  51                 bool                    final = false,
  52                 size_t                  inSize = 0);            // output for given input size
  53         void minimumProgress(
  54                 size_t                  &in,
  55                 size_t                  &out);                          // minimum progress chunks
  56
  57 private:
  58         RC4_KEY                         rc4Key;
  59
  60 };      /* RC4Context */
  61
  62 #endif //_RC4_CONTEXT_H_