ocrypto_ascon_aead.h

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/*
 * Copyright (c) 2016 - 2025 Nordic Semiconductor ASA
 * Copyright (c) since 2013 Oberon microsystems AG
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
 
#ifndef OCRYPTO_ASCON_AEAD_H
#define OCRYPTO_ASCON_AEAD_H
 
#include <stddef.h>
#include <stdint.h>
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
#define ocrypto_ascon_aead128_key_BYTES   (16)
 
#define ocrypto_ascon_aead128_tag_BYTES   (16)
 
#define ocrypto_ascon_aead128_nonce_BYTES (16)
 
 
typedef struct {
    uint64_t s[5];
    uint8_t  key[16];
    uint8_t  data[16];
    uint8_t  length;
    uint8_t  aad;
} ocrypto_ascon_aead_ctx;
void ocrypto_ascon_aead128_init(ocrypto_ascon_aead_ctx *ctx, const uint8_t key[16], const uint8_t nonce[16]);
 
void ocrypto_ascon_aead128_update_aad(ocrypto_ascon_aead_ctx *ctx, const uint8_t *aa, size_t aa_len);
 
void ocrypto_ascon_aead128_update_enc(ocrypto_ascon_aead_ctx *ctx, uint8_t* ct, const uint8_t* pt, size_t pt_len);
 
void ocrypto_ascon_aead128_update_dec(ocrypto_ascon_aead_ctx *ctx, uint8_t* pt, const uint8_t* ct, size_t ct_len);
 
void ocrypto_ascon_aead128_final_enc(ocrypto_ascon_aead_ctx *ctx, uint8_t tag[16]);
 
int ocrypto_ascon_aead128_final_dec(ocrypto_ascon_aead_ctx *ctx, const uint8_t tag[16]);
 
void ocrypto_ascon_aead128_encrypt (
    uint8_t* ct, uint8_t tag[16], const uint8_t* pt, size_t pt_len,
    const uint8_t key[16], const uint8_t nonce[16], const uint8_t *aa, size_t aa_len);
 
int ocrypto_ascon_aead128_decrypt (
    uint8_t* pt, const uint8_t tag[16], const uint8_t* ct, size_t ct_len,
    const uint8_t key[16], const uint8_t nonce[16], const uint8_t *aa, size_t aa_len);
 
#ifdef __cplusplus
}
#endif
 
#endif