cx_mlkem_util.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
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 *      http://www.apache.org/licenses/LICENSE-2.0
 *
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#ifndef CX_MLKEM_UTIL_H
#define CX_MLKEM_UTIL_H
 
#include <stddef.h>
#include <stdint.h>
 
#include "cx_errors.h"
#include "lcx_mlkem.h"
#include "lcx_sha3.h"
 
void MLKEM_UTIL_hash_h(uint8_t out[CX_SHA3_256_SIZE], const uint8_t *in, size_t in_len);
 
void MLKEM_UTIL_hash_g(uint8_t *out, const uint8_t *in, size_t in_len);
 
void MLKEM_UTIL_hash_j(uint8_t *out, const uint8_t *in, size_t inlen);
 
void MLKEM_UTIL_prf(uint8_t *out, size_t outlen, const uint8_t *key, uint8_t nonce);
 
void MLKEM_UTIL_xof_squeeze(uint8_t *out, size_t outlen, const uint8_t *seed, uint8_t x, uint8_t y);
 
void MLKEM_UTIL_ct_cmov(uint8_t *dst, const uint8_t *src, size_t len, uint8_t b);
 
cx_err_t MLKEM_UTIL_check_ek(const uint8_t *ek, const MLKEM_param_info_t *p);
 
#endif  // CX_MLKEM_UTIL_H