/** * \file md4.h */#ifndef XYSSL_MD4_H#define XYSSL_MD4_H/** * \brief          MD4 context structure */typedef struct{    unsigned long total[2];     /*!< number of bytes processed  */    unsigned long state[4];     /*!< intermediate digest state  */    unsigned char buffer[64];   /*!< data block being processed */    unsigned char ipad[64];     /*!< HMAC: inner padding        */    unsigned char opad[64];     /*!< HMAC: outer padding        */}md4_context;#ifdef __cplusplusextern "C" {#endif/** * \brief          MD4 context setup * * \param ctx      context to be initialized */void md4_starts( md4_context *ctx );/** * \brief          MD4 process buffer * * \param ctx      MD4 context * \param input    buffer holding the  data * \param ilen     length of the input data */void md4_update( md4_context *ctx, unsigned char *input, int ilen );/** * \brief          MD4 final digest * * \param ctx      MD4 context * \param output   MD4 checksum result */void md4_finish( md4_context *ctx, unsigned char output[16] );/** * \brief          Output = MD4( input buffer ) * * \param input    buffer holding the  data * \param ilen     length of the input data * \param output   MD4 checksum result */void md4( unsigned char *input, int ilen, unsigned char output[16] );/** * \brief          Output = MD4( file contents ) * * \param path     input file name * \param output   MD4 checksum result * * \return         0 if successful, 1 if fopen failed, *                 or 2 if fread failed */int md4_file( char *path, unsigned char output[16] );/** * \brief          MD4 HMAC context setup * * \param ctx      HMAC context to be initialized * \param key      HMAC secret key * \param keylen   length of the HMAC key */void md4_hmac_starts( md4_context *ctx, unsigned char *key, int keylen );/** * \brief          MD4 HMAC process buffer * * \param ctx      HMAC context * \param input    buffer holding the  data * \param ilen     length of the input data */void md4_hmac_update( md4_context *ctx, unsigned char *input, int ilen );/** * \brief          MD4 HMAC final digest * * \param ctx      HMAC context * \param output   MD4 HMAC checksum result */void md4_hmac_finish( md4_context *ctx, unsigned char output[16] );/** * \brief          Output = HMAC-MD4( hmac key, input buffer ) * * \param key      HMAC secret key * \param keylen   length of the HMAC key * \param input    buffer holding the  data * \param ilen     length of the input data * \param output   HMAC-MD4 result */void md4_hmac( unsigned char *key, int keylen,               unsigned char *input, int ilen,               unsigned char output[16] );/** * \brief          Checkup routine * * \return         0 if successful, or 1 if the test failed */int md4_self_test( int verbose );#ifdef __cplusplus}#endif#endif /* md4.h */