dilithium.h

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/* 2020-2026 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.
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 *   parameter selections, and engineering work contained in this software are
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 * - This software is licensed under the Quantum Resistant Cryptographic Solutions
 *   Public Research and Evaluation License (QRCS-PREL), 2025-2026.
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 * EXPERIMENTAL CRYPTOGRAPHY NOTICE:
 * Portions of this software may include experimental, novel, or evolving
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 * 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.
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 * Written by: John G. Underhill
 * Contact: contact@qrcscorp.ca
 */
 
#ifndef QSC_DILITHIUM_H
#define QSC_DILITHIUM_H
 
#include "qsccommon.h"
 
QSC_CPLUSPLUS_ENABLED_START

 

#define QSC_DILITHIUM_GENERATE_SEED_SIZE 32
 
#if defined(QSC_DILITHIUM_S1P44)

#   define QSC_DILITHIUM_PRIVATEKEY_SIZE 2560

#   define QSC_DILITHIUM_PUBLICKEY_SIZE 1312

#   define QSC_DILITHIUM_SIGNATURE_SIZE 2420
 
#elif defined(QSC_DILITHIUM_S3P65)

#   define QSC_DILITHIUM_PRIVATEKEY_SIZE 4032

#   define QSC_DILITHIUM_PUBLICKEY_SIZE 1952

#   define QSC_DILITHIUM_SIGNATURE_SIZE 3309
 
#elif defined(QSC_DILITHIUM_S5P87)

#   define QSC_DILITHIUM_PRIVATEKEY_SIZE 4896

#   define QSC_DILITHIUM_PUBLICKEY_SIZE 2592

#   define QSC_DILITHIUM_SIGNATURE_SIZE 4627
 
#else
#   error "The Dilithium parameter set is invalid!"
#endif

#define QSC_DILITHIUM_ALGNAME "DILITHIUM"

// * \def QSC_DILITHIUM_RANDOMIZED_SIGNING
// * \brief Enables randomized signing.
// */
//#define QSC_DILITHIUM_RANDOMIZED_SIGNING

QSC_EXPORT_API bool qsc_dilithium_generate_keypair(uint8_t* publickey, uint8_t* privatekey, bool (*rng_generate)(uint8_t*, size_t));

QSC_EXPORT_API void qsc_dilithium_seeded_generate_keypair(uint8_t* publickey, uint8_t* privatekey, const uint8_t* seed);

QSC_EXPORT_API bool qsc_dilithium_sign(uint8_t* signedmsg, size_t* smsglen, const uint8_t* message, size_t msglen, const uint8_t* privatekey, bool (*rng_generate)(uint8_t*, size_t));

QSC_EXPORT_API bool qsc_dilithium_sign_ex(uint8_t* signedmsg, size_t* smsglen, const uint8_t* message, size_t msglen, const uint8_t* context, size_t ctxlen, const uint8_t* privatekey, bool (*rng_generate)(uint8_t*, size_t));

QSC_EXPORT_API bool qsc_dilithium_verify(uint8_t* message, size_t* msglen, const uint8_t* signedmsg, size_t smsglen, const uint8_t* publickey);

QSC_EXPORT_API bool qsc_dilithium_verify_ex(uint8_t* message, size_t* msglen, const uint8_t* context, size_t ctxlen, const uint8_t* signedmsg, size_t smsglen, const uint8_t* publickey);
 
QSC_CPLUSPLUS_ENABLED_END
 
#endif