mcelmanager.h

/* 2025-2026 Quantum Resistant Cryptographic Solutions Corporation
 * All Rights Reserved.
 *
 * NOTICE:
 * This software and all accompanying materials are the exclusive property of
 * Quantum Resistant Cryptographic Solutions Corporation (QRCS). The intellectual
 * and technical concepts contained herein are proprietary to QRCS and are
 * protected under applicable Canadian, U.S., and international copyright,
 * patent, and trade secret laws.
 *
 * CRYPTOGRAPHIC ALGORITHMS AND IMPLEMENTATIONS:
 * - This software includes implementations of cryptographic primitives and
 *   algorithms that are standardized or in the public domain, such as AES
 *   and SHA-3, which are not proprietary to QRCS.
 * - This software also includes cryptographic primitives, constructions, and
 *   algorithms designed by QRCS, including but not limited to RCS, SCB, CSX, QMAC, and
 *   related components, which are proprietary to QRCS.
 * - All source code, implementations, protocol compositions, optimizations,
 *   parameter selections, and engineering work contained in this software are
 *   original works of QRCS and are protected under this license.
 *
 * LICENSE AND USE RESTRICTIONS:
 * - This software is licensed under the Quantum Resistant Cryptographic Solutions
 *   Public Research and Evaluation License (QRCS-PREL), 2025-2026.
 * - Permission is granted solely for non-commercial evaluation, academic research,
 *   cryptographic analysis, interoperability testing, and feasibility assessment.
 * - Commercial use, production deployment, commercial redistribution, or
 *   integration into products or services is strictly prohibited without a
 *   separate written license agreement executed with QRCS.
 * - Licensing and authorized distribution are solely at the discretion of QRCS.
 *
 * EXPERIMENTAL CRYPTOGRAPHY NOTICE:
 * Portions of this software may include experimental, novel, or evolving
 * cryptographic designs. Use of this software is entirely at the user's risk.
 *
 * DISCLAIMER:
 * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE, SECURITY, OR NON-INFRINGEMENT. QRCS DISCLAIMS ALL
 * LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 * ARISING FROM THE USE OR MISUSE OF THIS SOFTWARE.
 *
 * FULL LICENSE:
 * This software is subject to the Quantum Resistant Cryptographic Solutions
 * Public Research and Evaluation License (QRCS-PREL), 2025-2026. The complete license terms
 * are provided in the accompanying LICENSE file or at https://www.qrcscorp.ca.
 *
 * Written by: John G. Underhill
 * Contact: contact@qrcscorp.ca
 */
 
#ifndef UDIF_MCEL_MANAGER_H
#define UDIF_MCEL_MANAGER_H
 
#include "storage.h"
#include "mcel.h"

 
 /* MCEL constants */
#define UDIF_MCEL_BLOCK_HASH_SIZE 32U
#define UDIF_MCEL_KEYID_SIZE 32U
#define UDIF_MCEL_DEFAULT_BLOCK_SIZE 100U

typedef struct udif_checkpoint_config
{
    uint64_t membinterval;              
    uint64_t transinterval;             
    uint64_t reginterval;               
    uint32_t blocksize;                 
    bool autocheckpointenabled;         
} udif_checkpoint_config;

typedef struct udif_checkpoint_group
{
    uint8_t membcommit[UDIF_MCEL_BLOCK_HASH_SIZE];  
    uint8_t regcommit[UDIF_MCEL_BLOCK_HASH_SIZE];   
    uint8_t transcommit[UDIF_MCEL_BLOCK_HASH_SIZE]; 
    uint64_t height;                    
    uint64_t membershipseq;             
    uint64_t registryseq;               
    uint64_t timestamp;                 
    uint64_t transactionseq;            
} udif_checkpoint_group;

typedef struct udif_mcel_ledger
{
    mcel_ledger_state mcelstate;        
    udif_ledger_type type;              
    uint8_t lastblockroot[MCEL_BLOCK_HASH_SIZE];    
    uint8_t lastblockcommit[MCEL_BLOCK_HASH_SIZE];  
    char namespaceid[64U];              
    uint64_t nextblockseq;              
    uint64_t nextcheckpointseq;         
    uint64_t firstrecordinblock;        
    uint64_t firstrecordincheckpoint;   
    uint64_t nextrecordseq;             
    uint8_t* reccommits;                
    uint64_t totalblocks;               
    uint64_t totalcheckpoints;          
    uint64_t totalrecords;              
    size_t commitscap;                  
    size_t commitscount;                
    bool haveblockroot;                 
} udif_mcel_ledger;

typedef struct udif_mcel_manager
{
    udif_ledger_type actledger;         
    udif_checkpoint_config checkconfig; 
    udif_storage_context storage;       
    udif_mcel_ledger* membership;       
    udif_mcel_ledger* registry;         
    udif_mcel_ledger* transaction;      
    uint8_t keyid[UDIF_MCEL_KEYID_SIZE];    
    uint8_t sigkey[MCEL_ASYMMETRIC_SIGNING_KEY_SIZE];   
    uint8_t verkey[MCEL_ASYMMETRIC_VERIFY_KEY_SIZE];    
    bool initialized;                   
    bool readonly;                      
} udif_mcel_manager;

udif_mcel_manager* udif_mcel_initialize(const char* basepath, const udif_checkpoint_config* config);

udif_mcel_manager* udif_mcel_open(const char* basepath, bool readonly, const uint8_t* sigkey, const uint8_t* verkey);

void udif_mcel_dispose(udif_mcel_manager* mgr);

bool udif_mcel_set_active_ledger(udif_mcel_manager* mgr, udif_ledger_type ledger);

udif_ledger_type udif_mcel_get_active_ledger(const udif_mcel_manager* mgr);

bool udif_mcel_add_record(udif_mcel_manager* mgr, const uint8_t* data, size_t datalen, bool encrypted, uint64_t* outseq);

bool udif_mcel_read_record(udif_mcel_manager* mgr, uint64_t sequence, uint8_t* data, size_t datalen, size_t* outread);

bool udif_mcel_get_ledger_size(const udif_mcel_manager* mgr, uint64_t* outcount);
 
/* === Block & Checkpoint Operations === */

bool udif_mcel_flush_block(udif_mcel_manager* mgr);

bool udif_mcel_create_checkpoint(udif_mcel_manager* mgr);

bool udif_mcel_create_checkpoint_group(udif_mcel_manager* mgr, udif_checkpoint_group* outgroup);

void udif_mcel_get_default_config(udif_checkpoint_config* config);

bool udif_mcel_flush_all(udif_mcel_manager* mgr);

bool udif_mcel_get_keypair(const udif_mcel_manager* mgr, uint8_t* sigkey, uint8_t* verkey);
 
#endif