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