anchor.h

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/* 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
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 * 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.
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 *   Public Research and Evaluation License (QRCS-PREL), 2025-2026.
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 * Portions of this software may include experimental, novel, or evolving
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 * ARISING FROM THE USE OR MISUSE OF THIS SOFTWARE.
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 * 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.
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 * Written by: John G. Underhill
 * Contact: contact\qrcscorp.ca
 */
 
#ifndef MCEL_ANCHOR_H
#define MCEL_ANCHOR_H
 
#include "mcelcommon.h"


#define MCEL_ANCHOR_HASH_SIZE 32U

#define MCEL_ANCHOR_REFERENCE_VERSION 0x01U

#define MCEL_ANCHOR_REFERENCE_HEADER_SIZE 8U

MCEL_EXPORT_API typedef struct mcel_anchor_reference
{
    uint8_t version;                     
    uint8_t flags;                         
    uint8_t type;                           
    uint8_t reserved;                       
    uint16_t chain_id_len;                  
    uint16_t reference_len;                    
    const uint8_t* chain_id;                
    const uint8_t* reference;              
} mcel_anchor_reference;

MCEL_EXPORT_API bool mcel_anchor_commit(uint8_t* output, const uint8_t* chkcommit, const uint8_t* anchref, size_t reflen);

MCEL_EXPORT_API bool mcel_anchor_reference_encode(uint8_t* output, size_t outlen, const mcel_anchor_reference* anchor);

MCEL_EXPORT_API size_t mcel_anchor_reference_encoded_size(size_t cidlen, size_t reflen);

MCEL_EXPORT_API bool mcel_anchor_reference_verify(uint8_t* flags, uint8_t* type, const uint8_t** chainid, uint16_t* chainidlen,
    const uint8_t** reference, uint16_t* reflen, const uint8_t* input, size_t inlen);
 
#endif