libsodium (1.0.19)

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       1  #ifndef crypto_kx_H
       2  #define crypto_kx_H
       3  
       4  #include <stddef.h>
       5  
       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_kx_PUBLICKEYBYTES 32
      16  SODIUM_EXPORT
      17  size_t crypto_kx_publickeybytes(void);
      18  
      19  #define crypto_kx_SECRETKEYBYTES 32
      20  SODIUM_EXPORT
      21  size_t crypto_kx_secretkeybytes(void);
      22  
      23  #define crypto_kx_SEEDBYTES 32
      24  SODIUM_EXPORT
      25  size_t crypto_kx_seedbytes(void);
      26  
      27  #define crypto_kx_SESSIONKEYBYTES 32
      28  SODIUM_EXPORT
      29  size_t crypto_kx_sessionkeybytes(void);
      30  
      31  #define crypto_kx_PRIMITIVE "x25519blake2b"
      32  SODIUM_EXPORT
      33  const char *crypto_kx_primitive(void);
      34  
      35  SODIUM_EXPORT
      36  int crypto_kx_seed_keypair(unsigned char pk[crypto_kx_PUBLICKEYBYTES],
      37                             unsigned char sk[crypto_kx_SECRETKEYBYTES],
      38                             const unsigned char seed[crypto_kx_SEEDBYTES])
      39              __attribute__ ((nonnull));
      40  
      41  SODIUM_EXPORT
      42  int crypto_kx_keypair(unsigned char pk[crypto_kx_PUBLICKEYBYTES],
      43                        unsigned char sk[crypto_kx_SECRETKEYBYTES])
      44              __attribute__ ((nonnull));
      45  
      46  SODIUM_EXPORT
      47  int crypto_kx_client_session_keys(unsigned char rx[crypto_kx_SESSIONKEYBYTES],
      48                                    unsigned char tx[crypto_kx_SESSIONKEYBYTES],
      49                                    const unsigned char client_pk[crypto_kx_PUBLICKEYBYTES],
      50                                    const unsigned char client_sk[crypto_kx_SECRETKEYBYTES],
      51                                    const unsigned char server_pk[crypto_kx_PUBLICKEYBYTES])
      52              __attribute__ ((warn_unused_result))  __attribute__ ((nonnull(3, 4, 5)));
      53  
      54  SODIUM_EXPORT
      55  int crypto_kx_server_session_keys(unsigned char rx[crypto_kx_SESSIONKEYBYTES],
      56                                    unsigned char tx[crypto_kx_SESSIONKEYBYTES],
      57                                    const unsigned char server_pk[crypto_kx_PUBLICKEYBYTES],
      58                                    const unsigned char server_sk[crypto_kx_SECRETKEYBYTES],
      59                                    const unsigned char client_pk[crypto_kx_PUBLICKEYBYTES])
      60              __attribute__ ((warn_unused_result))  __attribute__ ((nonnull(3, 4, 5)));
      61  
      62  #ifdef __cplusplus
      63  }
      64  #endif
      65  
      66  #endif