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      1 #ifndef crypto_secretbox_xsalsa20poly1305_H
      2 #define crypto_secretbox_xsalsa20poly1305_H
      3 
      4 #include <stddef.h>
      5 #include "crypto_stream_xsalsa20.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_xsalsa20poly1305_KEYBYTES 32U
     16 SODIUM_EXPORT
     17 size_t crypto_secretbox_xsalsa20poly1305_keybytes(void);
     18 
     19 #define crypto_secretbox_xsalsa20poly1305_NONCEBYTES 24U
     20 SODIUM_EXPORT
     21 size_t crypto_secretbox_xsalsa20poly1305_noncebytes(void);
     22 
     23 #define crypto_secretbox_xsalsa20poly1305_MACBYTES 16U
     24 SODIUM_EXPORT
     25 size_t crypto_secretbox_xsalsa20poly1305_macbytes(void);
     26 
     27 /* Only for the libsodium API - The NaCl compatibility API would require BOXZEROBYTES extra bytes */
     28 #define crypto_secretbox_xsalsa20poly1305_MESSAGEBYTES_MAX \
     29     (crypto_stream_xsalsa20_MESSAGEBYTES_MAX - crypto_secretbox_xsalsa20poly1305_MACBYTES)
     30 SODIUM_EXPORT
     31 size_t crypto_secretbox_xsalsa20poly1305_messagebytes_max(void);
     32 
     33 SODIUM_EXPORT
     34 int crypto_secretbox_xsalsa20poly1305(unsigned char *c,
     35                                       const unsigned char *m,
     36                                       unsigned long long mlen,
     37                                       const unsigned char *n,
     38                                       const unsigned char *k);
     39 
     40 SODIUM_EXPORT
     41 int crypto_secretbox_xsalsa20poly1305_open(unsigned char *m,
     42                                            const unsigned char *c,
     43                                            unsigned long long clen,
     44                                            const unsigned char *n,
     45                                            const unsigned char *k)
     46             __attribute__ ((warn_unused_result));
     47 
     48 SODIUM_EXPORT
     49 void crypto_secretbox_xsalsa20poly1305_keygen(unsigned char k[crypto_secretbox_xsalsa20poly1305_KEYBYTES]);
     50 
     51 /* -- NaCl compatibility interface ; Requires padding -- */
     52 
     53 #define crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES 16U
     54 SODIUM_EXPORT
     55 size_t crypto_secretbox_xsalsa20poly1305_boxzerobytes(void);
     56 
     57 #define crypto_secretbox_xsalsa20poly1305_ZEROBYTES \
     58     (crypto_secretbox_xsalsa20poly1305_BOXZEROBYTES + \
     59      crypto_secretbox_xsalsa20poly1305_MACBYTES)
     60 SODIUM_EXPORT
     61 size_t crypto_secretbox_xsalsa20poly1305_zerobytes(void);
     62 
     63 #ifdef __cplusplus
     64 }
     65 #endif
     66 
     67 #endif
     68