302 lines
13 KiB
C
302 lines
13 KiB
C
// Hardware crypto support Copyright 2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __ESP_WIFI_CRYPTO_TYPES_H__
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#define __ESP_WIFI_CRYPTO_TYPES_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* This enumation is about alorigthm will be set when do crypt hash
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* operation.When do wpa2 connecting, after invoke crypto_hash_xxx of
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* fast_crypto_hash_xxx API, it will do relation crypt operation according
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* to the enumation.
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*/
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typedef enum {
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ESP_CRYPTO_HASH_ALG_MD5, ESP_CRYPTO_HASH_ALG_SHA1,
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ESP_CRYPTO_HASH_ALG_HMAC_MD5, ESP_CRYPTO_HASH_ALG_HMAC_SHA1,
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ESP_CRYPTO_HASH_ALG_SHA256, ESP_CRYPTO_HASH_ALG_HMAC_SHA256
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}esp_crypto_hash_alg_t;
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/*
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* This enumation is about alorigthm will be set when do crypt cipher
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* operation.When do wpa2 connecting, after invoke crypto_cipher_xxx of
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* fast_crypto_cipher_xxx API, it will do relation crypt operation according
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* to the enumation.
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*/
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typedef enum {
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ESP_CRYPTO_CIPHER_NULL, ESP_CRYPTO_CIPHER_ALG_AES, ESP_CRYPTO_CIPHER_ALG_3DES,
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ESP_CRYPTO_CIPHER_ALG_DES, ESP_CRYPTO_CIPHER_ALG_RC2, ESP_CRYPTO_CIPHER_ALG_RC4
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} esp_crypto_cipher_alg_t;
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/*
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* This structure is about the algorithm when do crypto_hash operation, for detail,
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* please reference to the structure crypto_hash.
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*/
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typedef struct crypto_hash esp_crypto_hash_t;
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/*
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* This structure is about the algorithm when do crypto_cipher operation, for detail,
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* please reference to the structure crypto_cipher.
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*/
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typedef struct crypto_cipher esp_crypto_cipher_t;
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/**
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* @brief The crypto callback function used in wpa enterprise hash operation when connect.
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* Initialize a esp_crypto_hash_t structure.
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*
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* @param alg Hash algorithm.
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* @param key Key for keyed hash (e.g., HMAC) or %NULL if not needed.
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* @param key_len Length of the key in bytes
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*
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*/
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typedef esp_crypto_hash_t * (*esp_crypto_hash_init_t)(esp_crypto_hash_alg_t alg, const unsigned char *key, int key_len);
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/**
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* @brief The crypto callback function used in wpa enterprise hash operation when connect.
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* Add data to hash calculation.
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*
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* @param ctz Context pointer from esp_crypto_hash_init_t function.
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* @param data Data buffer to add.
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* @param len Length of the buffer.
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*
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*/
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typedef void * (*esp_crypto_hash_update_t)(esp_crypto_hash_t *ctx, const unsigned char *data, int len);
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/**
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* @brief The crypto callback function used in wpa enterprise hash operation when connect.
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* Complete hash calculation.
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*
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* @param ctz Context pointer from esp_crypto_hash_init_t function.
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* @param hash Buffer for hash value or %NULL if caller is just freeing the hash
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* context.
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* @param len Pointer to length of the buffer or %NULL if caller is just freeing the
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* hash context; on return, this is set to the actual length of the hash value
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* Returns: 0 on success, -1 if buffer is too small (len set to needed length),
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* or -2 on other failures (including failed crypto_hash_update() operations)
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*
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*/
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typedef int * (*esp_crypto_hash_finish_t)(esp_crypto_hash_t *ctx, unsigned char *hash, int *len);
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/**
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* @brief The AES callback function when do WPS connect.
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*
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* @param key Encryption key.
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* @param iv Encryption IV for CBC mode (16 bytes).
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* @param data Data to encrypt in-place.
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* @param data_len Length of data in bytes (must be divisible by 16)
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*/
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typedef int * (*esp_aes_128_encrypt_t)(const unsigned char *key, const unsigned char *iv, unsigned char *data, int data_len);
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/**
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* @brief The AES callback function when do WPS connect.
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*
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* @param key Decryption key.
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* @param iv Decryption IV for CBC mode (16 bytes).
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* @param data Data to decrypt in-place.
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* @param data_len Length of data in bytes (must be divisible by 16)
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*
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*/
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typedef int * (*esp_aes_128_decrypt_t)(const unsigned char *key, const unsigned char *iv, unsigned char *data, int data_len);
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/**
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* @brief The AES callback function when do STA connect.
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*
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* @param kek 16-octet Key encryption key (KEK).
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* @param n Length of the plaintext key in 64-bit units;
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* @param plain Plaintext key to be wrapped, n * 64 bits
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* @param cipher Wrapped key, (n + 1) * 64 bits
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*
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*/
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typedef int * (*esp_aes_wrap_t)(const unsigned char *kek, int n, const unsigned char *plain, unsigned char *cipher);
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/**
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* @brief The AES callback function when do STA connect.
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*
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* @param kek 16-octet Key decryption key (KEK).
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* @param n Length of the plaintext key in 64-bit units;
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* @param cipher Wrapped key to be unwrapped, (n + 1) * 64 bits
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* @param plain Plaintext key, n * 64 bits
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*
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*/
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typedef int * (*esp_aes_unwrap_t)(const unsigned char *kek, int n, const unsigned char *cipher, unsigned char *plain);
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/**
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* @brief The crypto callback function used in wpa enterprise cipher operation when connect.
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* Initialize a esp_crypto_cipher_t structure.
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*
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* @param alg cipher algorithm.
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* @param iv Initialization vector for block ciphers or %NULL for stream ciphers.
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* @param key Cipher key
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* @param key_len Length of key in bytes
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*
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*/
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typedef esp_crypto_cipher_t * (*esp_crypto_cipher_init_t)(esp_crypto_cipher_alg_t alg, const unsigned char *iv, const unsigned char *key, int key_len);
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/**
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* @brief The crypto callback function used in wpa enterprise cipher operation when connect.
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* Cipher encrypt.
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*
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* @param ctx Context pointer from esp_crypto_cipher_init_t callback function.
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* @param plain Plaintext to cipher.
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* @param crypt Resulting ciphertext.
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* @param len Length of the plaintext.
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*
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*/
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typedef int * (*esp_crypto_cipher_encrypt_t)(esp_crypto_cipher_t *ctx,
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const unsigned char *plain, unsigned char *crypt, int len);
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/**
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* @brief The crypto callback function used in wpa enterprise cipher operation when connect.
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* Cipher decrypt.
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*
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* @param ctx Context pointer from esp_crypto_cipher_init_t callback function.
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* @param crypt Ciphertext to decrypt.
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* @param plain Resulting plaintext.
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* @param len Length of the cipher text.
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*
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*/
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typedef int * (*esp_crypto_cipher_decrypt_t)(esp_crypto_cipher_t *ctx,
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const unsigned char *crypt, unsigned char *plain, int len);
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/**
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* @brief The crypto callback function used in wpa enterprise cipher operation when connect.
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* Free cipher context.
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*
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* @param ctx Context pointer from esp_crypto_cipher_init_t callback function.
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*
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*/
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typedef void * (*esp_crypto_cipher_deinit_t)(esp_crypto_cipher_t *ctx);
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/**
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* @brief The SHA256 callback function when do WPS connect.
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*
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* @param key Key for HMAC operations.
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* @param key_len Length of the key in bytes.
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* @param data Pointers to the data area.
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* @param data_len Length of the data area.
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* @param mac Buffer for the hash (20 bytes).
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*
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*/
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typedef void * (*esp_hmac_sha256_t)(const unsigned char *key, int key_len, const unsigned char *data,
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int data_len, unsigned char *mac);
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/**
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* @brief The SHA256 callback function when do WPS connect.
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*
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* @param key Key for HMAC operations.
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* @param key_len Length of the key in bytes.
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* @param num_elem Number of elements in the data vector.
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* @param addr Pointers to the data areas.
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* @param len Lengths of the data blocks.
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* @param mac Buffer for the hash (32 bytes).
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*
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*/
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typedef void * (*esp_hmac_sha256_vector_t)(const unsigned char *key, int key_len, int num_elem,
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const unsigned char *addr[], const int *len, unsigned char *mac);
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/**
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* @brief The AES callback function when do STA connect.
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*
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* @param key Key for PRF.
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* @param key_len Length of the key in bytes.
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* @param label A unique label for each purpose of the PRF.
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* @param data Extra data to bind into the key.
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* @param data_len Length of the data.
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* @param buf Buffer for the generated pseudo-random key.
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* @param buf_len Number of bytes of key to generate.
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*
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*/
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typedef void * (*esp_sha256_prf_t)(const unsigned char *key, int key_len, const char *label,
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const unsigned char *data, int data_len, unsigned char *buf, int buf_len);
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/**
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* @brief The SHA256 callback function when do WPS connect.
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*
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* @param num_elem Number of elements in the data vector.
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* @param addr Pointers to the data areas.
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* @param len Lengths of the data blocks.
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* @param mac Buffer for the hash.
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*
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*/
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typedef int * (*esp_sha256_vector_t)(int num_elem, const unsigned char *addr[], const int *len,
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unsigned char *mac);
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/**
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* @brief The bignum calculate callback function used when do connect.
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* In WPS process, it used to calculate public key and private key.
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*
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* @param base Base integer (big endian byte array).
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* @param base_len Length of base integer in bytes.
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* @param power Power integer (big endian byte array).
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* @param power_len Length of power integer in bytes.
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* @param modulus Modulus integer (big endian byte array).
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* @param modulus_len Length of modulus integer in bytes.
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* @param result Buffer for the result.
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* @param result_len Result length (max buffer size on input, real len on output).
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*
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*/
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typedef int * (*esp_crypto_mod_exp_t)(const unsigned char *base, int base_len,
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const unsigned char *power, int power_len,
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const unsigned char *modulus, int modulus_len,
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unsigned char *result, unsigned int *result_len);
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/**
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* @brief The crypto callback function structure used when do station security connect.
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* The structure can be set as software crypto or the crypto optimized by ESP32
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* hardware.
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*/
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typedef struct {
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esp_aes_wrap_t aes_wrap; /**< station connect function used when send EAPOL frame */
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esp_aes_unwrap_t aes_unwrap; /**< station connect function used when decrypt key data */
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esp_hmac_sha256_vector_t hmac_sha256_vector; /**< station connect function used when check MIC */
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esp_sha256_prf_t sha256_prf; /**< station connect function used when check MIC */
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}wpa_crypto_funcs_t;
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/**
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* @brief The crypto callback function structure used when do WPS process. The
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* structure can be set as software crypto or the crypto optimized by ESP32
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* hardware.
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*/
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typedef struct{
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esp_aes_128_encrypt_t aes_128_encrypt; /**< function used to process message when do WPS */
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esp_aes_128_decrypt_t aes_128_decrypt; /**< function used to process message when do WPS */
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esp_crypto_mod_exp_t crypto_mod_exp; /**< function used to calculate public key and private key */
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esp_hmac_sha256_t hmac_sha256; /**< function used to get attribute */
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esp_hmac_sha256_vector_t hmac_sha256_vector; /**< function used to process message when do WPS */
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esp_sha256_vector_t sha256_vector; /**< function used to process message when do WPS */
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}wps_crypto_funcs_t;
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/**
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* @brief The crypto callback function structure used when do WPA enterprise connect.
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* The structure can be set as software crypto or the crypto optimized by ESP32
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* hardware.
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*/
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typedef struct {
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esp_crypto_hash_init_t crypto_hash_init; /**< function used to initialize a crypto_hash structure when use TLSV1 */
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esp_crypto_hash_update_t crypto_hash_update; /**< function used to calculate hash data when use TLSV1 */
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esp_crypto_hash_finish_t crypto_hash_finish; /**< function used to finish the hash calculate when use TLSV1 */
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esp_crypto_cipher_init_t crypto_cipher_init; /**< function used to initialize a crypt_cipher structure when use TLSV1 */
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esp_crypto_cipher_encrypt_t crypto_cipher_encrypt; /**< function used to encrypt cipher when use TLSV1 */
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esp_crypto_cipher_decrypt_t crypto_cipher_decrypt; /**< function used to decrypt cipher when use TLSV1 */
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esp_crypto_cipher_deinit_t crypto_cipher_deinit; /**< function used to free context when use TLSV1 */
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esp_sha256_vector_t sha256_vector; /**< function used to do X.509v3 certificate parsing and processing */
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esp_crypto_mod_exp_t crypto_mod_exp; /**< function used to do key exchange when use TLSV1 */
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}wpa2_crypto_funcs_t;
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#ifdef __cplusplus
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}
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#endif
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#endif
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