82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
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* Copyright (c) 2012-2020 MIRACL UK Ltd.
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*
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* This file is part of MIRACL Core
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* (see https://github.com/miracl/core).
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file eddsa.h
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* @author Mike Scott
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* @date 14th April 2023
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* @brief EDDSA Header file
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*
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* declares functions
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*
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*/
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#ifndef EDDSA_C25519_H
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#define EDDSA_C25519_H
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#include "ecp_C25519.h"
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using namespace core;
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#define EGS_C25519 MODBYTES_B256_56 /**< ECC Group Size in bytes */
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#define EFS_C25519 MODBYTES_B256_56 /**< ECC Field Size in bytes */
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#define EDDSA_OK 0 /**< Function completed without error */
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#define EDDSA_INVALID_PUBLIC_KEY -2 /**< Public Key is Invalid */
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#define EDDSA_ERROR -3 /**< ECDH Internal Error */
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namespace C25519 {
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/* EDDSA primitives */
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/** @brief Generate an ECC public/private key pair
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*
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@param R is a pointer to a cryptographically secure random number generator
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@param D the private key, an output internally randomly generated if R!=NULL, otherwise must be provided as an input
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@param Q the output public key, which is D.G, where G is a fixed generator
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@return 0 or an error code
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*/
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extern int EDDSA_KEY_PAIR_GENERATE(csprng *R, octet *D, octet *Q);
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/** @brief Generate signature on a message
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*
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@param ph true for pre-hash version, default to false
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@param D the private key
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@param context is an octet string (or NULL)
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@param M is the message to be signed
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@param SIG is the output signature
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@return 0 or an error code
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*/
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extern int EDDSA_SIGNATURE(bool ph,octet *D, octet *context,octet *M,octet *SIG);
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/** @brief Verify signature on a message
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*
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@param ph true for pre-hash version, default to false
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@param Q the public key
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@param context is an octet string (or NULL)
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@param M is the signed message
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@param SIG is the intput signature
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@return true only if signature is good, else false
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*/
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extern bool EDDSA_VERIFY(bool ph,octet *Q,octet *context,octet *M,octet *SIG);
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}
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#endif
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