cx_mldsa_packing.h

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/*****************************************************************************
 *   (c) 2026 Ledger SAS.
 *
 *  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.
 *****************************************************************************/
 
#ifndef CX_MLDSA_PACKING_H
#define CX_MLDSA_PACKING_H
 
#include "cx_mldsa_poly.h"
#include "lcx_mldsa.h"
 
void MLDSA_PACK_polyt1(uint8_t r[MLDSA_POLYT1_PACKEDBYTES], const mldsa_poly *a);
 
void MLDSA_PACK_unpack_polyt1(mldsa_poly *r, const uint8_t a[MLDSA_POLYT1_PACKEDBYTES]);
 
void MLDSA_PACK_polyt0(uint8_t r[MLDSA_POLYT0_PACKEDBYTES], const mldsa_poly *a);
 
void MLDSA_PACK_unpack_polyt0(mldsa_poly *r, const uint8_t a[MLDSA_POLYT0_PACKEDBYTES]);
 
uint32_t MLDSA_PACK_polyeta(uint8_t *r, const mldsa_poly *a, uint8_t eta);
 
uint32_t MLDSA_PACK_unpack_polyeta(mldsa_poly *r, const uint8_t *a, uint8_t eta);
 
uint32_t MLDSA_PACK_polyz(uint8_t *r, const mldsa_poly *a, int32_t gamma1);
 
uint32_t MLDSA_PACK_unpack_polyz(mldsa_poly *r, const uint8_t *a, int32_t gamma1);
 
uint32_t MLDSA_PACK_polyw1(uint8_t *r, const mldsa_poly *a, int32_t gamma2);
 
void MLDSA_PACK_pk(uint8_t                  *pk,
                   const uint8_t             rho[MLDSA_SEEDBYTES],
                   const mldsa_poly         *t1,
                   const MLDSA_param_info_t *p);
 
void MLDSA_PACK_unpack_pk(uint8_t                   rho[MLDSA_SEEDBYTES],
                          mldsa_poly               *t1,
                          const uint8_t            *pk,
                          const MLDSA_param_info_t *p);
 
void MLDSA_PACK_sk(uint8_t                  *sk,
                   const uint8_t             rho[MLDSA_SEEDBYTES],
                   const uint8_t             K[MLDSA_SEEDBYTES],
                   const uint8_t             tr[MLDSA_TRBYTES],
                   const mldsa_poly         *s1,
                   const mldsa_poly         *s2,
                   const mldsa_poly         *t0,
                   const MLDSA_param_info_t *p);
 
void MLDSA_PACK_unpack_sk(uint8_t                   rho[MLDSA_SEEDBYTES],
                          uint8_t                   K[MLDSA_SEEDBYTES],
                          uint8_t                   tr[MLDSA_TRBYTES],
                          mldsa_poly               *s1,
                          mldsa_poly               *s2,
                          mldsa_poly               *t0,
                          const uint8_t            *sk,
                          const MLDSA_param_info_t *p);
 
void MLDSA_PACK_sig(uint8_t                  *sig,
                    const uint8_t            *ctilde,
                    const mldsa_poly         *z,
                    const mldsa_poly         *h,
                    const MLDSA_param_info_t *p);
 
int MLDSA_PACK_unpack_sig(uint8_t                  *ctilde,
                          mldsa_poly               *z,
                          mldsa_poly               *h,
                          const uint8_t            *sig,
                          const MLDSA_param_info_t *p);
 
#endif /* CX_MLDSA_PACKING_H */