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      1 #ifndef crypto_kdf_blake2b_H
      2 #define crypto_kdf_blake2b_H
      3 
      4 #include <stddef.h>
      5 #include <stdint.h>
      6 
      7 #include "crypto_kdf_blake2b.h"
      8 #include "export.h"
      9 
     10 #ifdef __cplusplus
     11 # ifdef __GNUC__
     12 #  pragma GCC diagnostic ignored "-Wlong-long"
     13 # endif
     14 extern "C" {
     15 #endif
     16 
     17 #define crypto_kdf_blake2b_BYTES_MIN 16
     18 SODIUM_EXPORT
     19 size_t crypto_kdf_blake2b_bytes_min(void);
     20 
     21 #define crypto_kdf_blake2b_BYTES_MAX 64
     22 SODIUM_EXPORT
     23 size_t crypto_kdf_blake2b_bytes_max(void);
     24 
     25 #define crypto_kdf_blake2b_CONTEXTBYTES 8
     26 SODIUM_EXPORT
     27 size_t crypto_kdf_blake2b_contextbytes(void);
     28 
     29 #define crypto_kdf_blake2b_KEYBYTES 32
     30 SODIUM_EXPORT
     31 size_t crypto_kdf_blake2b_keybytes(void);
     32 
     33 SODIUM_EXPORT
     34 int crypto_kdf_blake2b_derive_from_key(unsigned char *subkey, size_t subkey_len,
     35                                        uint64_t subkey_id,
     36                                        const char ctx[crypto_kdf_blake2b_CONTEXTBYTES],
     37                                        const unsigned char key[crypto_kdf_blake2b_KEYBYTES]);
     38 #ifdef __cplusplus
     39 }
     40 #endif
     41 
     42 #endif
     43