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      1 #ifndef crypto_stream_H
      2 #define crypto_stream_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 
     14 #include "crypto_stream_xsalsa20.h"
     15 #include "export.h"
     16 
     17 #ifdef __cplusplus
     18 # ifdef __GNUC__
     19 #  pragma GCC diagnostic ignored "-Wlong-long"
     20 # endif
     21 extern "C" {
     22 #endif
     23 
     24 #define crypto_stream_KEYBYTES crypto_stream_xsalsa20_KEYBYTES
     25 SODIUM_EXPORT
     26 size_t  crypto_stream_keybytes(void);
     27 
     28 #define crypto_stream_NONCEBYTES crypto_stream_xsalsa20_NONCEBYTES
     29 SODIUM_EXPORT
     30 size_t  crypto_stream_noncebytes(void);
     31 
     32 #define crypto_stream_MESSAGEBYTES_MAX crypto_stream_xsalsa20_MESSAGEBYTES_MAX
     33 SODIUM_EXPORT
     34 size_t  crypto_stream_messagebytes_max(void);
     35 
     36 #define crypto_stream_PRIMITIVE "xsalsa20"
     37 SODIUM_EXPORT
     38 const char *crypto_stream_primitive(void);
     39 
     40 SODIUM_EXPORT
     41 int crypto_stream(unsigned char *c, unsigned long long clen,
     42                   const unsigned char *n, const unsigned char *k);
     43 
     44 SODIUM_EXPORT
     45 int crypto_stream_xor(unsigned char *c, const unsigned char *m,
     46                       unsigned long long mlen, const unsigned char *n,
     47                       const unsigned char *k);
     48 
     49 SODIUM_EXPORT
     50 void crypto_stream_keygen(unsigned char k[crypto_stream_KEYBYTES]);
     51 
     52 #ifdef __cplusplus
     53 }
     54 #endif
     55 
     56 #endif
     57