libsodium (1.0.19)

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       1  
       2  #ifndef crypto_scalarmult_ristretto255_H
       3  #define crypto_scalarmult_ristretto255_H
       4  
       5  #include <stddef.h>
       6  
       7  #include "export.h"
       8  
       9  #ifdef __cplusplus
      10  extern "C" {
      11  #endif
      12  
      13  #define crypto_scalarmult_ristretto255_BYTES 32U
      14  SODIUM_EXPORT
      15  size_t crypto_scalarmult_ristretto255_bytes(void);
      16  
      17  #define crypto_scalarmult_ristretto255_SCALARBYTES 32U
      18  SODIUM_EXPORT
      19  size_t crypto_scalarmult_ristretto255_scalarbytes(void);
      20  
      21  /*
      22   * NOTE: Do not use the result of this function directly for key exchange.
      23   *
      24   * Hash the result with the public keys in order to compute a shared
      25   * secret key: H(q || client_pk || server_pk)
      26   *
      27   * Or unless this is not an option, use the crypto_kx() API instead.
      28   */
      29  SODIUM_EXPORT
      30  int crypto_scalarmult_ristretto255(unsigned char *q, const unsigned char *n,
      31                                     const unsigned char *p)
      32              __attribute__ ((warn_unused_result)) __attribute__ ((nonnull));
      33  
      34  SODIUM_EXPORT
      35  int crypto_scalarmult_ristretto255_base(unsigned char *q,
      36                                          const unsigned char *n)
      37              __attribute__ ((nonnull));
      38  
      39  #ifdef __cplusplus
      40  }
      41  #endif
      42  
      43  #endif