111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
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/**********************************************************************
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* Copyright (c) 2017 Tomas van der Wansem *
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* Distributed under the MIT software license, see the accompanying *
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* file COPYING or http://www.opensource.org/licenses/mit-license.php.*
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**********************************************************************/
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#ifndef _SECP256K1_MULTISET__
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# define _SECP256K1_MULTISET__
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# include "secp256k1.h"
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# ifdef __cplusplus
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extern "C" {
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# endif
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/** Opaque multiset; this is actually a group element **/
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typedef struct {
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unsigned char d[96];
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} secp256k1_multiset;
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/** Initialize a multiset
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* The resulting multiset the multiset for no data elements
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*
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* Returns: 1: success
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* 0: invalid parameter
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* Args: ctx: pointer to a context object (cannot be NULL)
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* Out: multiset: the resulting multiset
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*/
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SECP256K1_API int secp256k1_multiset_init(
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const secp256k1_context* ctx,
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secp256k1_multiset *multiset
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2);
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/** Adds an element to a multiset from single data element
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*
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* Returns: 1: success
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* 0: invalid parameter
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* Args: ctx: pointer to a context object (cannot be NULL)
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* Out: multiset: the multiset to update
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* In: input: the data to add
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* inputLen: the size of the data to add
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*/
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SECP256K1_API int secp256k1_multiset_add(
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const secp256k1_context* ctx,
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secp256k1_multiset *multiset,
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const unsigned char *input,
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size_t inputLen
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3);
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/** Removes an element from a multiset
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*
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* Returns: 1: success
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* 0: invalid parameter
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* Args: ctx: pointer to a context object (cannot be NULL)
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* Out: multiset: the multiset to update
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* In: input: the data to remove
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* inputLen: the size of the data to remove
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*/
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SECP256K1_API int secp256k1_multiset_remove(
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const secp256k1_context* ctx,
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secp256k1_multiset *multiset,
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const unsigned char *input,
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size_t inputLen
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3);
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/** Combines two multisets
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*
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* Returns: 1: success
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* 0: invalid parameter
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* Args: ctx: pointer to a context object (cannot be NULL)
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* In/Out: multiset: the multiset to which the input must be added
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* In: input: the multiset to add
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*/
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SECP256K1_API int secp256k1_multiset_combine(
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const secp256k1_context* ctx,
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secp256k1_multiset *multiset,
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const secp256k1_multiset *input
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3);
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/** Converts a multiset to a hash
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*
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* Returns: 1: success
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* 0: invalid parameter
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* Args: ctx: pointer to a context object (cannot be NULL)
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* Out: hash: the resulting 32-byte hash
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* In: multiset: the multiset to hash
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*/
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SECP256K1_API int secp256k1_multiset_finalize(
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const secp256k1_context* ctx,
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unsigned char *resultHash,
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const secp256k1_multiset *multiset
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) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3);
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# ifdef __cplusplus
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}
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# endif
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#endif
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