124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2012-2020 MIRACL UK Ltd.
|
||
|
|
*
|
||
|
|
* This file is part of MIRACL Core
|
||
|
|
* (see https://github.com/miracl/core).
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file hpke.h
|
||
|
|
* @author Mike Scott
|
||
|
|
* @date 2nd December 2019
|
||
|
|
* @brief HPKE Header file
|
||
|
|
*
|
||
|
|
* declares functions
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef HPKE_SM2_H
|
||
|
|
#define HPKE_SM2_H
|
||
|
|
|
||
|
|
#include "ecdh_SM2.h"
|
||
|
|
|
||
|
|
using namespace core;
|
||
|
|
|
||
|
|
//#define CONFIG_ID 0x2A // 01|01|010 = 1, 1, 2
|
||
|
|
//#define KEM_ID 2 // Curve X25519
|
||
|
|
//#define KEM_ID 3 // Curve X448
|
||
|
|
//#define KDF_ID 1 // HKDF-SHA256
|
||
|
|
//#define AEAD_ID 1 // AES-GCM-128
|
||
|
|
|
||
|
|
#define HPKE_OK 0 /**< Function completed without error */
|
||
|
|
#define HPKE_INVALID_PUBLIC_KEY -2 /**< Public Key is Invalid */
|
||
|
|
#define HPKE_ERROR -3 /**< HPKE Internal Error */
|
||
|
|
|
||
|
|
namespace SM2 {
|
||
|
|
|
||
|
|
static void LabeledExtract(octet *PRK,octet *SALT,octet *SUITE_ID,char *label,octet *IKM);
|
||
|
|
static void LabeledExpand(octet *OKM,octet *PRK,octet *SUITE_ID,char *label,octet *INFO,int L);
|
||
|
|
static void ExtractAndExpand(int config_id,octet *OKM,octet *DH,octet *CONTEXT);
|
||
|
|
|
||
|
|
/* HPKE DHKEM primitives */
|
||
|
|
|
||
|
|
/** @brief Derive a Key Pair from a seed
|
||
|
|
*
|
||
|
|
@param config_id is the configuration KEM/KDF/AEAD
|
||
|
|
@param SK is the output secret key
|
||
|
|
@param PK is the output public key
|
||
|
|
@param SEED is the input random seed
|
||
|
|
@return 1 if OK, 0 if failed
|
||
|
|
*/
|
||
|
|
extern int DeriveKeyPair(int config_id,octet *SK,octet *PK,octet *SEED);
|
||
|
|
|
||
|
|
/** @brief Encapsulate function
|
||
|
|
*
|
||
|
|
@param config_id is the configuration KEM/KDF/AEAD
|
||
|
|
@param SK is the input ephemeral secret
|
||
|
|
@param Z is a pointer to a shared secret DH(skE,pkR)
|
||
|
|
@param pkE the ephemeral public key, which is skE.G, where G is a fixed generator
|
||
|
|
@param pkR the respondents public key
|
||
|
|
*/
|
||
|
|
extern void HPKE_Encap(int config_id,octet *SK,octet *Z,octet *pkE,octet *pkR);
|
||
|
|
|
||
|
|
/** @brief Decapsulate function
|
||
|
|
*
|
||
|
|
@param config_id is the configuration KEM/KDF/AEAD
|
||
|
|
@param skR the respondents private key
|
||
|
|
@param Z is a pointer to a shared secret DH(skR,pkE)
|
||
|
|
@param pkE the ephemeral public key
|
||
|
|
@param pkR the respondents public key
|
||
|
|
*/
|
||
|
|
extern void HPKE_Decap(int config_id,octet *skR,octet *Z,octet *pkE,octet *pkR);
|
||
|
|
|
||
|
|
/** @brief Encapsulate/Authenticate function
|
||
|
|
*
|
||
|
|
@param config_id is the configuration KEM/KDF/AEAD
|
||
|
|
@param skE is the input ephemeral secret
|
||
|
|
@param skS is the Initiators private key
|
||
|
|
@param Z is a pointer to a shared secret DH(skE,pkR)
|
||
|
|
@param pkE the ephemeral public key, which is skE.G, where G is a fixed generator
|
||
|
|
@param pkR the Respondents public key
|
||
|
|
@param pkS the Initiators public key
|
||
|
|
*/
|
||
|
|
extern void HPKE_AuthEncap(int config_id,octet *sKE,octet *skS,octet *Z,octet *pkE,octet *pkR,octet *pkS);
|
||
|
|
|
||
|
|
/** @brief Decapsulate function
|
||
|
|
*
|
||
|
|
@param config_id is the configuration KEM/KDF/AEAD
|
||
|
|
@param skR is the Respondents private key
|
||
|
|
@param Z is a pointer to a shared secret DH(skR,pkE)
|
||
|
|
@param pkE the ephemeral public key
|
||
|
|
@param pkR the Respondents public key
|
||
|
|
@param pkS the Initiators public key
|
||
|
|
*/
|
||
|
|
extern void HPKE_AuthDecap(int config_id,octet *skR,octet *Z,octet *pkE,octet *pkR,octet *pkS);
|
||
|
|
|
||
|
|
/** @brief KeyScheduler function
|
||
|
|
*
|
||
|
|
@param config_id is the configuration KEM/KDF/AEAD
|
||
|
|
@param key the output key for aead encryption
|
||
|
|
@param nonce the output nonce for aead encryption
|
||
|
|
@param exp_secret the exporter secret
|
||
|
|
@param mode the mode of operation
|
||
|
|
@param Z the shared key
|
||
|
|
@param info application dependent info
|
||
|
|
@param psk pre-shared key
|
||
|
|
@param pskID identifier for the psk
|
||
|
|
*/
|
||
|
|
extern void HPKE_KeySchedule(int config_id,octet *key,octet *nonce,octet *exp_secret,int mode,octet *Z,octet *info,octet *psk,octet *pskID);
|
||
|
|
|
||
|
|
}
|
||
|
|
#endif
|