110 lines
3.5 KiB
C
110 lines
3.5 KiB
C
/* ascon.h
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*
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* Copyright (C) 2006-2025 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifndef WOLF_CRYPT_ASCON_H
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#define WOLF_CRYPT_ASCON_H
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#ifdef HAVE_ASCON
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#include <wolfssl/wolfcrypt/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ASCON_HASH256_SZ 32
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#define ASCON_AEAD128_KEY_SZ 16
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#define ASCON_AEAD128_NONCE_SZ 16
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#define ASCON_AEAD128_TAG_SZ 16
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typedef union AsconState {
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#ifdef WORD64_AVAILABLE
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word64 s64[5];
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#endif
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word32 s32[10];
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word16 s16[20];
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byte s8[40];
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} AsconState;
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typedef struct wc_AsconHash256 {
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AsconState state;
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byte lastBlkSz;
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} wc_AsconHash256;
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enum {
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ASCON_AEAD128_NOTSET = 0,
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ASCON_AEAD128_ENCRYPT = 1,
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ASCON_AEAD128_DECRYPT = 2
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};
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typedef struct wc_AsconAEAD128 {
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/* needed throughout both encrypt and decrypt */
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#ifdef WORD64_AVAILABLE
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word64 key[ASCON_AEAD128_KEY_SZ/sizeof(word64)];
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#endif
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AsconState state;
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byte lastBlkSz;
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byte keySet:1; /* has the key been processed */
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byte nonceSet:1; /* has the nonce been processed */
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byte adSet:1; /* has the associated data been processed */
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byte op:2; /* 0 for not set, 1 for encrypt, 2 for decrypt */
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} wc_AsconAEAD128;
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/* AsconHash API */
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WOLFSSL_API wc_AsconHash256* wc_AsconHash256_New(void);
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WOLFSSL_API void wc_AsconHash256_Free(wc_AsconHash256* a);
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WOLFSSL_API int wc_AsconHash256_Init(wc_AsconHash256* a);
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WOLFSSL_API void wc_AsconHash256_Clear(wc_AsconHash256* a);
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WOLFSSL_API int wc_AsconHash256_Update(wc_AsconHash256* a, const byte* data,
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word32 dataSz);
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WOLFSSL_API int wc_AsconHash256_Final(wc_AsconHash256* a, byte* hash);
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WOLFSSL_API wc_AsconAEAD128* wc_AsconAEAD128_New(void);
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WOLFSSL_API void wc_AsconAEAD128_Free(wc_AsconAEAD128* a);
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WOLFSSL_API int wc_AsconAEAD128_Init(wc_AsconAEAD128* a);
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WOLFSSL_API void wc_AsconAEAD128_Clear(wc_AsconAEAD128* a);
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/* AsconAEAD API */
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WOLFSSL_API int wc_AsconAEAD128_SetKey(wc_AsconAEAD128* a, const byte* key);
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WOLFSSL_API int wc_AsconAEAD128_SetNonce(wc_AsconAEAD128* a, const byte* nonce);
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WOLFSSL_API int wc_AsconAEAD128_SetAD(wc_AsconAEAD128* a, const byte* ad,
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word32 adSz);
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WOLFSSL_API int wc_AsconAEAD128_EncryptUpdate(wc_AsconAEAD128* a, byte* out,
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const byte* in, word32 inSz);
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WOLFSSL_API int wc_AsconAEAD128_EncryptFinal(wc_AsconAEAD128* a, byte* tag);
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WOLFSSL_API int wc_AsconAEAD128_DecryptUpdate(wc_AsconAEAD128* a, byte* out,
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const byte* in, word32 inSz);
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WOLFSSL_API int wc_AsconAEAD128_DecryptFinal(wc_AsconAEAD128* a,
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const byte* tag);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* HAVE_ASCON */
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#endif /* WOLF_CRYPT_ASCON_H */
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