gerrit.fd Code Review - trex.git/blob

   1 #ifndef crypto_stream_chacha20_H
   2 #define crypto_stream_chacha20_H
   3
   4 /*
   5  *  WARNING: This is just a stream cipher. It is NOT authenticated encryption.
   6  *  While it provides some protection against eavesdropping, it does NOT
   7  *  provide any security against active attacks.
   8  *  Unless you know what you're doing, what you are looking for is probably
   9  *  the crypto_box functions.
  10  */
  11
  12 #include <stddef.h>
  13 #include <stdint.h>
  14 #include "export.h"
  15
  16 #ifdef __cplusplus
  17 # if __GNUC__
  18 #  pragma GCC diagnostic ignored "-Wlong-long"
  19 # endif
  20 extern "C" {
  21 #endif
  22
  23 #define crypto_stream_chacha20_KEYBYTES 32U
  24 SODIUM_EXPORT
  25 size_t crypto_stream_chacha20_keybytes(void);
  26
  27 #define crypto_stream_chacha20_NONCEBYTES 8U
  28 SODIUM_EXPORT
  29 size_t crypto_stream_chacha20_noncebytes(void);
  30
  31 SODIUM_EXPORT
  32 int crypto_stream_chacha20(unsigned char *c, unsigned long long clen,
  33                            const unsigned char *n, const unsigned char *k);
  34
  35 SODIUM_EXPORT
  36 int crypto_stream_chacha20_xor(unsigned char *c, const unsigned char *m,
  37                                unsigned long long mlen, const unsigned char *n,
  38                                const unsigned char *k);
  39
  40 SODIUM_EXPORT
  41 int crypto_stream_chacha20_xor_ic(unsigned char *c, const unsigned char *m,
  42                                   unsigned long long mlen,
  43                                   const unsigned char *n, uint64_t ic,
  44                                   const unsigned char *k);
  45 #ifdef __cplusplus
  46 }
  47 #endif
  48
  49 #endif