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144 lines
4.7 KiB
C
144 lines
4.7 KiB
C
/* atmel.h
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*
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* Copyright (C) 2006-2021 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 _ATECC508_H_
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#define _ATECC508_H_
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#include <stdint.h>
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#include <libs/libwolfssl/wolfcrypt/settings.h>
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#include <libs/libwolfssl/wolfcrypt/error-crypt.h>
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#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC608A) || \
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defined(WOLFSSL_ATECC_PKCB)
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#undef SHA_BLOCK_SIZE
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#include <cryptoauthlib.h>
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#endif
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/* ATECC508A/608A only supports ECC P-256 */
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#define ATECC_KEY_SIZE (32)
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#define ATECC_PUBKEY_SIZE (ATECC_KEY_SIZE*2) /* X and Y */
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#define ATECC_SIG_SIZE (ATECC_KEY_SIZE*2) /* R and S */
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#ifndef ATECC_MAX_SLOT
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#define ATECC_MAX_SLOT (0x8) /* Only use 0-7 */
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#endif
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#define ATECC_INVALID_SLOT (0xFF)
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/* Device Key for signing */
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#ifndef ATECC_SLOT_AUTH_PRIV
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#define ATECC_SLOT_AUTH_PRIV (0x0)
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#endif
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/* Ephemeral key */
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#ifndef ATECC_SLOT_ECDHE_PRIV
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#define ATECC_SLOT_ECDHE_PRIV (0x2)
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#endif
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/* Symmetric encryption key */
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#ifndef ATECC_SLOT_I2C_ENC
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#ifdef WOLFSSL_ATECC_TNGTLS
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#define ATECC_SLOT_I2C_ENC (0x06)
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#else
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#define ATECC_SLOT_I2C_ENC (0x04)
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#endif
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#endif
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/* Parent encryption key */
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#ifndef ATECC_SLOT_ENC_PARENT
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#ifdef WOLFSSL_ATECC_TNGTLS
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#define ATECC_SLOT_ENC_PARENT (0x6)
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#else
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#define ATECC_SLOT_ENC_PARENT (0x7)
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#endif
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#endif
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/* ATECC_KEY_SIZE required for ecc.h */
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#include <libs/libwolfssl/wolfcrypt/ecc.h>
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struct WOLFSSL;
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struct WOLFSSL_CTX;
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struct WOLFSSL_X509_STORE_CTX;
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struct ecc_key;
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/* Atmel port functions */
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int atmel_init(void);
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void atmel_finish(void);
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int atmel_get_random_number(uint32_t count, uint8_t* rand_out);
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#ifndef ATMEL_GET_RANDOM_BLOCK_DEFINED
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int atmel_get_random_block(unsigned char* output, unsigned int sz);
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#define ATMEL_GET_RANDOM_BLOCK_DEFINED
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#endif
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long atmel_get_curr_time_and_date(long* tm);
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#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC608A)
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enum atmelSlotType {
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ATMEL_SLOT_ANY,
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ATMEL_SLOT_ENCKEY,
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ATMEL_SLOT_DEVICE,
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ATMEL_SLOT_ECDHE,
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ATMEL_SLOT_ECDHE_ENC,
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};
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int atmel_ecc_alloc(int slotType);
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void atmel_ecc_free(int slotId);
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typedef int (*atmel_slot_alloc_cb)(int);
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typedef void (*atmel_slot_dealloc_cb)(int);
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int atmel_set_slot_allocator(atmel_slot_alloc_cb alloc,
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atmel_slot_dealloc_cb dealloc);
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int atmel_ecc_translate_err(int status);
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int atmel_get_rev_info(word32* revision);
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void atmel_show_rev_info(void);
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WOLFSSL_API int wolfCrypt_ATECC_SetConfig(ATCAIfaceCfg* cfg);
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/* The macro ATECC_GET_ENC_KEY can be set to override the default
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encryption key with your own at build-time */
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#ifndef ATECC_GET_ENC_KEY
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#define ATECC_GET_ENC_KEY(enckey, keysize) atmel_get_enc_key_default((enckey), (keysize))
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#endif
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int atmel_get_enc_key_default(byte* enckey, word16 keysize);
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int atmel_ecc_create_pms(int slotId, const uint8_t* peerKey, uint8_t* pms);
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int atmel_ecc_create_key(int slotId, byte* peerKey);
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int atmel_ecc_sign(int slotId, const byte* message, byte* signature);
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int atmel_ecc_verify(const byte* message, const byte* signature,
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const byte* pubkey, int* pVerified);
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#endif /* WOLFSSL_ATECC508A */
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#ifdef HAVE_PK_CALLBACKS
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int atcatls_create_key_cb(struct WOLFSSL* ssl, struct ecc_key* key, unsigned int keySz,
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int ecc_curve, void* ctx);
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int atcatls_create_pms_cb(struct WOLFSSL* ssl, struct ecc_key* otherKey,
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unsigned char* pubKeyDer, word32* pubKeySz,
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unsigned char* out, word32* outlen,
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int side, void* ctx);
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int atcatls_sign_certificate_cb(struct WOLFSSL* ssl, const byte* in, unsigned int inSz,
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byte* out, word32* outSz, const byte* key, unsigned int keySz, void* ctx);
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int atcatls_verify_signature_cb(struct WOLFSSL* ssl, const byte* sig, unsigned int sigSz,
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const byte* hash, unsigned int hashSz, const byte* key, unsigned int keySz,
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int* result, void* ctx);
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int atcatls_set_callbacks(struct WOLFSSL_CTX* ctx);
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int atcatls_set_callback_ctx(struct WOLFSSL* ssl, void* user_ctx);
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#endif
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#endif /* _ATECC508_H_ */
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