#define DES_MAXLEN 65536 /* maximum # of bytes to encrypt */ #define DES_QUICKLEN 16 /* maximum # of bytes to encrypt quickly */ enum desdir { ENCRYPT, DECRYPT }; enum desmode { CBC, ECB }; /* * parameters to ioctl call */ struct desparams { u_char des_key[8]; /* key (with low bit parity) */ enum desdir des_dir; /* direction */ enum desmode des_mode; /* mode */ u_char des_ivec[8]; /* input vector */ unsigned des_len; /* number of bytes to crypt */ union { u_char UDES_data[DES_QUICKLEN]; u_char *UDES_buf; } UDES; #define des_data UDES.UDES_data /* direct data here if quick */ #define des_buf UDES.UDES_buf /* otherwise, pointer to data */ }; #endif