project("device-authentication")

cmake_minimum_required(VERSION 3.5)

INCLUDE_DIRECTORIES(

../include/

../../src/net/mbedtls/include

../../src/smalgo/sms4/include

)

SET(my_src_crypto

../../src/net/mbedtls/library/aes.c

../../src/net/mbedtls/library/aesni.c

../../src/net/mbedtls/library/base64.c

../../src/net/mbedtls/library/rsa.c

../../src/net/mbedtls/library/rsa_internal.c

../../src/net/mbedtls/library/entropy.c

../../src/net/mbedtls/library/entropy_poll.c

../../src/net/mbedtls/library/bignum.c

../../src/net/mbedtls/library/sha1.c

../../src/net/mbedtls/library/sha256.c

../../src/net/mbedtls/library/sha512.c

../../src/net/mbedtls/library/md.c

../../src/net/mbedtls/library/md5.c

../../src/net/mbedtls/library/md_wrap.c

../../src/net/mbedtls/library/ripemd160.c

../../src/net/mbedtls/library/platform_util.c

../../src/net/mbedtls/library/oid.c

../../src/net/mbedtls/library/timing.c

../../src/net/mbedtls/library/net_sockets.c

../../src/smalgo/sms4/cbc128.c

../../src/smalgo/sms4/sms4_cbc.c

../../src/smalgo/sms4/sms4_common.c

../../src/smalgo/sms4/sms4_enc.c

../../src/smalgo/sms4/sms4_setkey.c

)

SET(my_src_crypto_dbg

../../src/net/mbedtls/library/ctr_drbg.c

)

SET(SRC_LIST_ENCRYPT_BIN

oem_porting.c

sdk_porting.c

authref.c

test.c

${my_src_crypto}

${my_src_crypto_dbg}

)

SET(SRC_LIST_DECRYPT_LIB

oem_porting.c

sdk_porting.c

authref.c

auth.c

${my_src_crypto}

${my_src_crypto_dbg}

)

#SET(SRC_LIST_AUTH_DEV

oem_porting.c

sdk_porting.c

authref.c

${my_src_crypto}

${my_src_crypto_dbg}

#)

add_definitions(-fPIC)

#ADD_LIBRARY(authd STATIC ${SRC_LIST_AUTH_DEV})

ADD_LIBRARY(authoal STATIC ${SRC_LIST_DECRYPT_LIB})

ADD_EXECUTABLE(eaidkAuth ${SRC_LIST_ENCRYPT_BIN})

工程结构如下：

引入完成之后我们就可以开始 AES 代码编写。

3、AES 代码编写

authref.h 头文件代码如下：

#ifndef AUTHREF_H

#define AUTHREF_H

#include <assert.h>

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#undef DEBUG

#define AES_KEY_SIZE 48

#define AES_IV_LEN 16

#ifdef __cplusplus

extern "C" {

#endif

// aes 加密

// aes_key -- 最长 48 字节

// iv -- 最长 16 字节

// plaintext -- 待加密文本

// ciphertext -- 加密得到的文本

// len -- len should be 16*N bytes

// return – 0 for ok, else for error

int aes_cbc_encryp(uint8_t *aes_key, uint8_t *iv, uint8_t *plaintext, uint8_t *ciphertext, uint32_t len);

// aes 解密

// aes_key -- 最长 48 字节

// iv -- 最长 16 字节

// ciphertext -- 待解密的文本

// plaintext -- 解密好的文本

// len -- len should

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be 16*N bytes

// return – 0 for ok, else for error

int aes_cbc_decryp(uint8_t *aes_key, uint8_t *iv, uint8_t *ciphertext, uint8_t *plaintext, uint32_t len);

#ifdef __cplusplus

}

#endif

#endif //AUTHREF_H

authref.c 代码如下：?

#include "authref.h"

#include "mbedtls/entropy.h"

#include "mbedtls/ctr_drbg.h"