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      1 #ifndef crypto_secretbox_xchacha20poly1305_H
      2 #define crypto_secretbox_xchacha20poly1305_H
      3 
      4 #include <stddef.h>
      5 #include "crypto_stream_xchacha20.h"
      6 #include "export.h"
      7 
      8 #ifdef __cplusplus
      9 # ifdef __GNUC__
     10 #  pragma GCC diagnostic ignored "-Wlong-long"
     11 # endif
     12 extern "C" {
     13 #endif
     14 
     15 #define crypto_secretbox_xchacha20poly1305_KEYBYTES 32U
     16 SODIUM_EXPORT
     17 size_t crypto_secretbox_xchacha20poly1305_keybytes(void);
     18 
     19 #define crypto_secretbox_xchacha20poly1305_NONCEBYTES 24U
     20 SODIUM_EXPORT
     21 size_t crypto_secretbox_xchacha20poly1305_noncebytes(void);
     22 
     23 #define crypto_secretbox_xchacha20poly1305_MACBYTES 16U
     24 SODIUM_EXPORT
     25 size_t crypto_secretbox_xchacha20poly1305_macbytes(void);
     26 
     27 #define crypto_secretbox_xchacha20poly1305_MESSAGEBYTES_MAX \
     28     (crypto_stream_xchacha20_MESSAGEBYTES_MAX - crypto_secretbox_xchacha20poly1305_MACBYTES)
     29 SODIUM_EXPORT
     30 size_t crypto_secretbox_xchacha20poly1305_messagebytes_max(void);
     31 
     32 SODIUM_EXPORT
     33 int crypto_secretbox_xchacha20poly1305_easy(unsigned char *c,
     34                                             const unsigned char *m,
     35                                             unsigned long long mlen,
     36                                             const unsigned char *n,
     37                                             const unsigned char *k);
     38 
     39 SODIUM_EXPORT
     40 int crypto_secretbox_xchacha20poly1305_open_easy(unsigned char *m,
     41                                                  const unsigned char *c,
     42                                                  unsigned long long clen,
     43                                                  const unsigned char *n,
     44                                                  const unsigned char *k)
     45             __attribute__ ((warn_unused_result));
     46 
     47 SODIUM_EXPORT
     48 int crypto_secretbox_xchacha20poly1305_detached(unsigned char *c,
     49                                                 unsigned char *mac,
     50                                                 const unsigned char *m,
     51                                                 unsigned long long mlen,
     52                                                 const unsigned char *n,
     53                                                 const unsigned char *k);
     54 
     55 SODIUM_EXPORT
     56 int crypto_secretbox_xchacha20poly1305_open_detached(unsigned char *m,
     57                                                      const unsigned char *c,
     58                                                      const unsigned char *mac,
     59                                                      unsigned long long clen,
     60                                                      const unsigned char *n,
     61                                                      const unsigned char *k)
     62             __attribute__ ((warn_unused_result));
     63 
     64 #ifdef __cplusplus
     65 }
     66 #endif
     67 
     68 #endif
     69