/usr/include/sodium/crypto_aead_xchacha20poly1305.h is in libsodium-dev 1.0.16-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | #ifndef crypto_aead_xchacha20poly1305_H
#define crypto_aead_xchacha20poly1305_H
#include <stddef.h>
#include "export.h"
#ifdef __cplusplus
# ifdef __GNUC__
# pragma GCC diagnostic ignored "-Wlong-long"
# endif
extern "C" {
#endif
#define crypto_aead_xchacha20poly1305_ietf_KEYBYTES 32U
SODIUM_EXPORT
size_t crypto_aead_xchacha20poly1305_ietf_keybytes(void);
#define crypto_aead_xchacha20poly1305_ietf_NSECBYTES 0U
SODIUM_EXPORT
size_t crypto_aead_xchacha20poly1305_ietf_nsecbytes(void);
#define crypto_aead_xchacha20poly1305_ietf_NPUBBYTES 24U
SODIUM_EXPORT
size_t crypto_aead_xchacha20poly1305_ietf_npubbytes(void);
#define crypto_aead_xchacha20poly1305_ietf_ABYTES 16U
SODIUM_EXPORT
size_t crypto_aead_xchacha20poly1305_ietf_abytes(void);
#define crypto_aead_xchacha20poly1305_ietf_MESSAGEBYTES_MAX \
(SODIUM_SIZE_MAX - crypto_aead_xchacha20poly1305_ietf_ABYTES)
SODIUM_EXPORT
size_t crypto_aead_xchacha20poly1305_ietf_messagebytes_max(void);
SODIUM_EXPORT
int crypto_aead_xchacha20poly1305_ietf_encrypt(unsigned char *c,
unsigned long long *clen_p,
const unsigned char *m,
unsigned long long mlen,
const unsigned char *ad,
unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
SODIUM_EXPORT
int crypto_aead_xchacha20poly1305_ietf_decrypt(unsigned char *m,
unsigned long long *mlen_p,
unsigned char *nsec,
const unsigned char *c,
unsigned long long clen,
const unsigned char *ad,
unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
__attribute__ ((warn_unused_result));
SODIUM_EXPORT
int crypto_aead_xchacha20poly1305_ietf_encrypt_detached(unsigned char *c,
unsigned char *mac,
unsigned long long *maclen_p,
const unsigned char *m,
unsigned long long mlen,
const unsigned char *ad,
unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
SODIUM_EXPORT
int crypto_aead_xchacha20poly1305_ietf_decrypt_detached(unsigned char *m,
unsigned char *nsec,
const unsigned char *c,
unsigned long long clen,
const unsigned char *mac,
const unsigned char *ad,
unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
__attribute__ ((warn_unused_result));
SODIUM_EXPORT
void crypto_aead_xchacha20poly1305_ietf_keygen(unsigned char k[crypto_aead_xchacha20poly1305_ietf_KEYBYTES]);
/* Aliases */
#define crypto_aead_xchacha20poly1305_IETF_KEYBYTES crypto_aead_xchacha20poly1305_ietf_KEYBYTES
#define crypto_aead_xchacha20poly1305_IETF_NSECBYTES crypto_aead_xchacha20poly1305_ietf_NSECBYTES
#define crypto_aead_xchacha20poly1305_IETF_NPUBBYTES crypto_aead_xchacha20poly1305_ietf_NPUBBYTES
#define crypto_aead_xchacha20poly1305_IETF_ABYTES crypto_aead_xchacha20poly1305_ietf_ABYTES
#define crypto_aead_xchacha20poly1305_IETF_MESSAGEBYTES_MAX crypto_aead_xchacha20poly1305_ietf_MESSAGEBYTES_MAX
#ifdef __cplusplus
}
#endif
#endif
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