src/xyssl/arc4.h

   1 /**
   2  * \file arc4.h
   3  */
   4 #ifndef XYSSL_ARC4_H
   5 #define XYSSL_ARC4_H
   6
   7 /**
   8  * \brief          ARC4 context structure
   9  */
  10 typedef struct
  11 {
  12     int x;                      /*!< permutation index */
  13     int y;                      /*!< permutation index */
  14     unsigned char m[256];       /*!< permutation table */
  15 }
  16 arc4_context;
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 /**
  23  * \brief          ARC4 key schedule
  24  *
  25  * \param ctx      ARC4 context to be initialized
  26  * \param key      the secret key
  27  * \param keylen   length of the key
  28  */
  29 void arc4_setup( arc4_context *ctx, unsigned char *key, int keylen );
  30
  31 /**
  32  * \brief          ARC4 cipher function
  33  *
  34  * \param ctx      ARC4 context
  35  * \param buf      buffer to be processed
  36  * \param buflen   amount of data in buf
  37  */
  38 void arc4_crypt( arc4_context *ctx, unsigned char *buf, int buflen );
  39
  40 /*
  41  * \brief          Checkup routine
  42  *
  43  * \return         0 if successful, or 1 if the test failed
  44  */
  45 int arc4_self_test( int verbose );
  46
  47 #ifdef __cplusplus
  48 }
  49 #endif
  50
  51 #endif /* arc4.h */