mirror of https://github.com/wolfSSL/wolfBoot.git
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/* encrypt.h
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*
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* Functions to encrypt/decrypt external flash content
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*
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* Copyright (C) 2025 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot 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 3 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot 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 ENCRYPT_H_INCLUDED
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#define ENCRYPT_H_INCLUDED
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#if defined(__WOLFBOOT) || defined(UNIT_TEST) || defined(MMU)
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#include <stdint.h>
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#include "wolfssl/wolfcrypt/settings.h"
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#include "wolfssl/wolfcrypt/sha256.h"
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#include "target.h"
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#include "wolfboot/wolfboot.h"
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#ifdef ENCRYPT_WITH_CHACHA
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#include "wolfssl/wolfcrypt/chacha.h"
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#else
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#include "wolfssl/wolfcrypt/aes.h"
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#endif
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#include "wolfssl/wolfcrypt/pwdbased.h"
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#ifdef ENCRYPT_WITH_CHACHA
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extern ChaCha chacha;
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#define crypto_init() chacha_init()
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#define crypto_encrypt(eb,b,sz) wc_Chacha_Process(&chacha, eb, b, sz)
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#define crypto_decrypt(db,b,sz) wc_Chacha_Process(&chacha, db, b, sz)
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#define crypto_set_iv(n, iv) wc_Chacha_SetIV(&chacha, n, iv)
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int chacha_init(void);
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#elif defined(ENCRYPT_WITH_AES128) || defined(ENCRYPT_WITH_AES256)
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extern Aes aes_dec, aes_enc;
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#define crypto_init() aes_init()
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#define crypto_encrypt(eb,b,sz) wc_AesCtrEncrypt(&aes_enc, eb, b, sz)
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#define crypto_decrypt(db,b,sz) wc_AesCtrEncrypt(&aes_dec, db, b, sz)
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#define crypto_set_iv(n,a) aes_set_iv(n, a)
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int aes_init(void);
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void aes_set_iv(uint8_t *nonce, uint32_t address);
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#elif defined(ENCRYPT_PKCS11)
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#include "wolfboot/wcs_pkcs11.h"
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int pkcs11_crypto_init(void);
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void pkcs11_crypto_set_iv(uint8_t *nonce, uint32_t iv_ctr);
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int pkcs11_crypto_encrypt(uint8_t *out, uint8_t *in, size_t size);
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int pkcs11_crypto_decrypt(uint8_t *out, uint8_t *in, size_t size);
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void pkcs11_crypto_deinit(void);
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#define crypto_init() pkcs11_crypto_init()
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#define crypto_encrypt(eb,b,sz) pkcs11_crypto_encrypt(eb, b, sz)
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#define crypto_decrypt(db,b,sz) pkcs11_crypto_decrypt(db, b, sz)
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#define crypto_set_iv(n,a) pkcs11_crypto_set_iv(n, a)
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#endif /* ENCRYPT_WITH_CHACHA */
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/* external flash encryption read/write functions */
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int ext_flash_encrypt_write(uintptr_t address, const uint8_t *data, int len);
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int ext_flash_decrypt_read(uintptr_t address, uint8_t *data, int len);
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#ifdef EXT_ENCRYPTED
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int wolfBoot_enable_fallback_iv(int enable);
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void wolfBoot_crypto_set_iv(const uint8_t *nonce, uint32_t iv_counter);
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#endif
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#endif /* __WOLFBOOT || UNIT_TEST || MMU */
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#endif /* ENCRYPT_H_INCLUDED */
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