git / moonbite-core / src/secp256k1-zkp/include/secp256k1_ecdh.h · raw

#ifndef SECP256K1_ECDH_H#define SECP256K1_ECDH_H#include "secp256k1.h"#ifdef __cplusplusextern "C" {#endif/** Compute an EC Diffie-Hellman secret in constant time *  Returns: 1: exponentiation was successful *           0: scalar was invalid (zero or overflow) *  Args:    ctx:        pointer to a context object (cannot be NULL) *  Out:     result:     a 32-byte array which will be populated by an ECDH *                       secret computed from the point and scalar *  In:      pubkey:     a pointer to a secp256k1_pubkey containing an *                       initialized public key *           privkey:    a 32-byte scalar with which to multiply the point */SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ecdh(  const secp256k1_context* ctx,  unsigned char *result,  const secp256k1_pubkey *pubkey,  const unsigned char *privkey) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4);#ifdef __cplusplus}#endif#endif /* SECP256K1_ECDH_H */