// $Id: crypto.h,v 1.1.2.3 2003/08/26 09:08:15 cssharp Exp $

/*									tab:4
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/* Authors: Naveen Sastry
 * Date:    10/20/02
 *
 * Basic header file descriptions for the crpto contexts. These are untyped
 * and meant to be opaque to all but the appropriate modules, which should
 * cast the structures to their appropriate internal types. 
 */

/*
 * Context for block cipher.
 */

/**
 * @author Naveen Sastry
 */

typedef struct CipherContext {
  // rc5      needs 104 bytes
  // skipjack needs 32 * 4 = 128 bytes.
  uint8_t context[128];
} CipherContext;



/**
 * Context for the MAC
 */
typedef struct MACContext {
  CipherContext cc;
  uint8_t context[12];
} MACContext;

/**
 * Context for the block cipher modes
 */
typedef struct CipherModeContext {
  CipherContext cc;
  uint8_t context[24];
} CipherModeContext;
