rosapps/smartpdf/fitz/include/fitz/stm_crypt.h

   1 /*
   2  * Basic crypto functions.
   3  * Independent of the rest of fitz.
   4  * For further encapsulation in filters, or not.
   5  */
   6
   7 /* crc-32 checksum */
   8
   9 unsigned long fz_crc32(unsigned long crc, unsigned char *buf, int len);
  10
  11 /* md5 digests */
  12
  13 typedef struct fz_md5_s fz_md5;
  14
  15 struct fz_md5_s
  16 {
  17         unsigned long state[4];
  18         unsigned long count[2];
  19         unsigned char buffer[64];
  20 };
  21
  22 void fz_md5init(fz_md5 *state);
  23 void fz_md5update(fz_md5 *state, unsigned char *input, unsigned inlen);
  24 void fz_md5final(fz_md5 *state, unsigned char digest[16]);
  25
  26 /* arc4 crypto */
  27
  28 typedef struct fz_arc4_s fz_arc4;
  29
  30 struct fz_arc4_s
  31 {
  32         unsigned x;
  33         unsigned y;
  34         unsigned char state[256];
  35 };
  36
  37 void fz_arc4init(fz_arc4 *state, unsigned char *key, unsigned len);
  38 unsigned char fz_arc4next(fz_arc4 *state);
  39 void fz_arc4encrypt(fz_arc4 *state, unsigned char *dest, unsigned char *src, unsigned len);
  40
  41 /* TODO: sha1 */
  42 /* TODO: aes */
  43