algorithm.h

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/*
 * Copyright (C) 2024 TU Dresden
 * Copyright (C) 2021 HAW Hamburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "psa/algorithm.h"
 
#define PSA_ALG_CATEGORY_AEAD ((psa_algorithm_t)0x05000000)
 
#define PSA_ALG_IS_AEAD(alg) (((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_AEAD)
 
#define PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) (((alg) & 0x7f400000) == 0x05400000)
 
#define PSA_ALG_CCM ((psa_algorithm_t)0x05500100)
 
#define PSA_ALG_GCM ((psa_algorithm_t)0x05500200)
 
#define PSA_ALG_CHACHA20_POLY1305 ((psa_algorithm_t)0x05100500)
 
#define PSA_ALG_AEAD_WITH_SHORTENED_TAG(aead_alg, tag_length) \
    ((psa_algorithm_t)(((aead_alg) & ~0x003f0000) | (((tag_length) & 0x3f) << 16)))
 
#define PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(aead_alg) \
    ((((aead_alg) & ~0x003f0000) == 0x05400100) ? PSA_ALG_CCM : \
     (((aead_alg) & ~0x003f0000) == 0x05400200) ? PSA_ALG_GCM : \
     (((aead_alg) & ~0x003f0000) == 0x05000500) ? PSA_ALG_CHACHA20_POLY1305 : \
     PSA_ALG_NONE)
 
#define PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(aead_alg, min_tag_length) \
    /* specification-defined value */
 
#ifdef __cplusplus
}
#endif