kevacoin/include/secp256k1_ecdh.h
MarcoFalke fd86f998fc Squashed 'src/secp256k1/' changes from 84973d393..0b7024185
0b7024185 Merge #474: Fix header guards using reserved identifiers
ab1f89f00 Merge #478: Fixed multiple typos
8c7ea22d5 Fixed multiple typos
abe2d3e84 Fix header guards using reserved identifiers
f532bdc9f Merge #459: Add pubkey prefix constants to include/secp256k1.h
cac7c5559 Merge #470: Fix wnaf_const documentation
768514bac Fix wnaf_const documentation with respect to return value and number of words set
b8c26a399 Merge #458: Fix typo in API documentation
817fb2013 Merge #440: Fix typos
12230f90e Merge #468: Remove redundant conditional expression
2e1ccdca0 Remove redundant conditional expression
bc61b91ac add pubkey prefix constants to include/secp256k1.h
b0452e664 Fix typo in API documentation
4c0f32ed5 Fix typo: "Agressive" → "Aggressive"
73aca8364 Fix typo: "exectured" → "executed"

git-subtree-dir: src/secp256k1
git-subtree-split: 0b7024185045a49a1a6a4c5615bf31c94f63d9c4
2017-09-29 16:00:20 +02:00

32 lines
1.0 KiB
C

#ifndef SECP256K1_ECDH_H
#define SECP256K1_ECDH_H
#include "secp256k1.h"
#ifdef __cplusplus
extern "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 */