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1 files changed, 134 insertions, 0 deletions

diff --git a/wolfssl/wolfcrypt/port/atmel/atmel.h b/wolfssl/wolfcrypt/port/atmel/atmel.h
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+/* atmel.h
+ *
+ * Copyright (C) 2006-2020 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+#ifndef _ATECC508_H_
+#define _ATECC508_H_
+
+#include <stdint.h>
+
+#include <wolfssl/wolfcrypt/settings.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+
+#if defined(WOLFSSL_ATECC508A) || defined(WOLFSSL_ATECC_PKCB)
+    #undef  SHA_BLOCK_SIZE
+    #define SHA_BLOCK_SIZE  SHA_BLOCK_SIZE_REMAP
+    #include <cryptoauthlib.h>
+    #undef SHA_BLOCK_SIZE
+#endif
+
+/* ATECC508A only supports ECC P-256 */
+#define ATECC_KEY_SIZE      (32)
+#define ATECC_PUBKEY_SIZE   (ATECC_KEY_SIZE*2) /* X and Y */
+#define ATECC_SIG_SIZE      (ATECC_KEY_SIZE*2) /* R and S */
+#ifndef ATECC_MAX_SLOT
+#define ATECC_MAX_SLOT      (0x8) /* Only use 0-7 */
+#endif
+#define ATECC_INVALID_SLOT  (0xFF)
+
+/* Device Key for signing */
+#ifndef ATECC_SLOT_AUTH_PRIV
+#define ATECC_SLOT_AUTH_PRIV      (0x0)
+#endif
+/* Ephemeral key */
+#ifndef ATECC_SLOT_ECDHE_PRIV
+#define ATECC_SLOT_ECDHE_PRIV     (0x2)
+#endif
+/* Symmetric encryption key */
+#ifndef ATECC_SLOT_I2C_ENC
+#define ATECC_SLOT_I2C_ENC        (0x04)
+#endif
+/* Parent encryption key */
+#ifndef ATECC_SLOT_ENC_PARENT
+#define ATECC_SLOT_ENC_PARENT     (0x7)
+#endif
+
+/* ATECC_KEY_SIZE required for ecc.h */
+#include <wolfssl/wolfcrypt/ecc.h>
+
+struct WOLFSSL;
+struct WOLFSSL_CTX;
+struct WOLFSSL_X509_STORE_CTX;
+struct ecc_key;
+
+/* Atmel port functions */
+int  atmel_init(void);
+void atmel_finish(void);
+int  atmel_get_random_number(uint32_t count, uint8_t* rand_out);
+#ifndef ATMEL_GET_RANDOM_BLOCK_DEFINED
+    int  atmel_get_random_block(unsigned char* output, unsigned int sz);
+    #define ATMEL_GET_RANDOM_BLOCK_DEFINED
+#endif
+long atmel_get_curr_time_and_date(long* tm);
+
+#ifdef WOLFSSL_ATECC508A
+
+enum atmelSlotType {
+    ATMEL_SLOT_ANY,
+    ATMEL_SLOT_ENCKEY,
+    ATMEL_SLOT_DEVICE,
+    ATMEL_SLOT_ECDHE,
+    ATMEL_SLOT_ECDHE_ENC,
+};
+
+int  atmel_ecc_alloc(int slotType);
+void atmel_ecc_free(int slotId);
+
+typedef int  (*atmel_slot_alloc_cb)(int);
+typedef void (*atmel_slot_dealloc_cb)(int);
+int atmel_set_slot_allocator(atmel_slot_alloc_cb alloc,
+    atmel_slot_dealloc_cb dealloc);
+
+int  atmel_ecc_translate_err(int status);
+int  atmel_get_rev_info(word32* revision);
+void atmel_show_rev_info(void);
+
+/* The macro ATECC_GET_ENC_KEY can be set to override the default
+   encryption key with your own at build-time */
+#ifndef ATECC_GET_ENC_KEY
+    #define ATECC_GET_ENC_KEY(enckey, keysize) atmel_get_enc_key_default((enckey), (keysize))
+#endif
+int  atmel_get_enc_key_default(byte* enckey, word16 keysize);
+int  atmel_ecc_create_pms(int slotId, const uint8_t* peerKey, uint8_t* pms);
+int  atmel_ecc_create_key(int slotId, byte* peerKey);
+int  atmel_ecc_sign(int slotId, const byte* message, byte* signature);
+int  atmel_ecc_verify(const byte* message, const byte* signature,
+    const byte* pubkey, int* verified);
+
+#endif /* WOLFSSL_ATECC508A */
+
+#ifdef HAVE_PK_CALLBACKS
+    int atcatls_create_key_cb(struct WOLFSSL* ssl, struct ecc_key* key, unsigned int keySz,
+        int ecc_curve, void* ctx);
+    int atcatls_create_pms_cb(struct WOLFSSL* ssl, struct ecc_key* otherKey,
+        unsigned char* pubKeyDer, word32* pubKeySz,
+        unsigned char* out, word32* outlen,
+        int side, void* ctx);
+    int atcatls_sign_certificate_cb(struct WOLFSSL* ssl, const byte* in, unsigned int inSz,
+        byte* out, word32* outSz, const byte* key, unsigned int keySz, void* ctx);
+    int atcatls_verify_signature_cb(struct WOLFSSL* ssl, const byte* sig, unsigned int sigSz,
+        const byte* hash, unsigned int hashSz, const byte* key, unsigned int keySz,
+        int* result, void* ctx);
+
+    int atcatls_set_callbacks(struct WOLFSSL_CTX* ctx);
+    int atcatls_set_callback_ctx(struct WOLFSSL* ssl, void* user_ctx);
+#endif
+
+#endif /* _ATECC508_H_ */