poly1305.h

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/* 2025 Quantum Resistant Cryptographic Solutions Corporation
 * All Rights Reserved.
 *
 * NOTICE:  All information contained herein is, and remains
 * the property of Quantum Resistant Cryptographic Solutions Incorporated.
 * The intellectual and technical concepts contained
 * herein are proprietary to Quantum Resistant Cryptographic Solutions Incorporated
 * and its suppliers and may be covered by U.S. and Foreign Patents,
 * patents in process, and are protected by trade secret or copyright law.
 * Dissemination of this information or reproduction of this material
 * is strictly forbidden unless prior written permission is obtained
 * from Quantum Resistant Cryptographic Solutions Incorporated.
 *
 * Written by John G. Underhill
 * Contact: john.underhill@protonmail.com
 */
 
#ifndef QSC_POLY1305_H
#define QSC_POLY1305_H
 
#include "common.h"
 
QSC_CPLUSPLUS_ENABLED_START


#define QSC_POLY1305_BLOCK_SIZE 16

#define QSC_POLY1305_KEY_SIZE 32

#define QSC_POLY1305_MAC_SIZE 16

QSC_EXPORT_API typedef struct qsc_poly1305_state
{
    uint32_t h[5];                         
    uint32_t k[4];                         
    uint32_t r[5];                         
    uint32_t s[4];                         
    uint8_t buf[QSC_POLY1305_BLOCK_SIZE]; 
    size_t fnl;                              
    size_t rmd;                              
} qsc_poly1305_state;
 

QSC_EXPORT_API void qsc_poly1305_blockupdate(qsc_poly1305_state* ctx, const uint8_t* message);

QSC_EXPORT_API void qsc_poly1305_compute(uint8_t* output, const uint8_t* message, size_t msglen, const uint8_t* key);

QSC_EXPORT_API void qsc_poly1305_dispose(qsc_poly1305_state* ctx);

QSC_EXPORT_API void qsc_poly1305_finalize(qsc_poly1305_state* ctx, uint8_t* mac);

QSC_EXPORT_API void qsc_poly1305_initialize(qsc_poly1305_state* ctx, const uint8_t* key);

QSC_EXPORT_API void qsc_poly1305_reset(qsc_poly1305_state* ctx);

QSC_EXPORT_API void qsc_poly1305_update(qsc_poly1305_state* ctx, const uint8_t* message, size_t msglen);

QSC_EXPORT_API int32_t qsc_poly1305_verify(const uint8_t* code, const uint8_t* message, size_t msglen, const uint8_t* key);
 
QSC_CPLUSPLUS_ENABLED_END
 
#endif