4 测试加密模块

wm20031015 发表于 2022-3-16 22:03

M23内置了硬件加密模块，对于做通信、bootloader数据安全提供了高效的解决方案，今天简单测试一下AES256的加密、解密，数据是一个自定义的8*8的ascii字体库。‘

演示部分代码如下：

 
#define TEXT_SIZE (95 * 8)

uint8_t key_128 =  
{   0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 
    0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c 
}; 
uint8_t key_192 =  
{   0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 
    0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, 
    0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b 
}; 
uint8_t key_256 =  
{   0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 
    0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81, 
    0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 
    0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 
};

__attribute__((aligned(4))) uint8_t plaintext = { 
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,    //" ",0 
0x00,0x00,0x5F,0x00,0x00,0x00,0x00,0x00,    //"!",1 
0x00,0x03,0x00,0x03,0x00,0x00,0x00,0x00,    //""",2 
0x14,0x7F,0x14,0x7F,0x14,0x00,0x00,0x00,    //"#",3 
0x00,0x4C,0x7A,0x4F,0x32,0x00,0x00,0x00,    //"$",4 
0x00,0x66,0x16,0x68,0x66,0x00,0x00,0x00,    //"%",5 
0x00,0x38,0x4F,0x4D,0x32,0x00,0x00,0x00,    //"&",6 
0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x00,    //"'",7 
0x00,0x00,0x3E,0x41,0x00,0x00,0x00,0x00,    //"(",8 
0x00,0x00,0x41,0x3E,0x00,0x00,0x00,0x00,    //")",9 
0x00,0x1C,0x3E,0x1C,0x00,0x00,0x00,0x00,    //"*",10 
0x00,0x08,0x3E,0x08,0x00,0x00,0x00,0x00,    //"+",11 
0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x00,    //",",12 
0x00,0x08,0x08,0x08,0x08,0x00,0x00,0x00,    //"-",13 
0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,    //".",14 
0x00,0x40,0x30,0x0C,0x03,0x00,0x00,0x00,    //"/",15 
0x00,0x3E,0x41,0x41,0x3E,0x00,0x00,0x00,    //"0",16 
0x00,0x42,0x7F,0x40,0x00,0x00,0x00,0x00,    //"1",17 
0x00,0x62,0x51,0x49,0x46,0x00,0x00,0x00,    //"2",18 
0x00,0x22,0x49,0x49,0x36,0x00,0x00,0x00,    //"3",19 
0x00,0x38,0x26,0x7F,0x20,0x00,0x00,0x00,    //"4",20 
0x00,0x4F,0x49,0x49,0x31,0x00,0x00,0x00,    //"5",21 
0x00,0x3E,0x49,0x49,0x32,0x00,0x00,0x00,    //"6",22 
0x00,0x03,0x71,0x09,0x07,0x00,0x00,0x00,    //"7",23 
0x00,0x36,0x49,0x49,0x36,0x00,0x00,0x00,    //"8",24 
0x00,0x26,0x49,0x49,0x3E,0x00,0x00,0x00,    //"9",25 
0x00,0x00,0x24,0x00,0x00,0x00,0x00,0x00,    //":",26 
0x00,0x40,0x24,0x00,0x00,0x00,0x00,0x00,    //";",27 
0x00,0x08,0x14,0x22,0x41,0x00,0x00,0x00,    //"<",28 
0x00,0x14,0x14,0x14,0x14,0x00,0x00,0x00,    //"=",29 
0x00,0x41,0x22,0x14,0x08,0x00,0x00,0x00,    //">",30 
0x00,0x02,0x51,0x09,0x06,0x00,0x00,0x00,    //"?",31 
0x00,0x0E,0x71,0x49,0x7E,0x00,0x00,0x00,    //"@",32 
0x00,0x7E,0x11,0x11,0x7E,0x00,0x00,0x00,    //"A",33 
0x00,0x7F,0x49,0x49,0x36,0x00,0x00,0x00,    //"B",34 
0x00,0x3E,0x41,0x41,0x22,0x00,0x00,0x00,    //"C",35 
0x00,0x7F,0x41,0x41,0x3E,0x00,0x00,0x00,    //"D",36 
0x00,0x7F,0x49,0x49,0x41,0x00,0x00,0x00,    //"E",37 
0x00,0x7F,0x09,0x09,0x01,0x00,0x00,0x00,    //"F",38 
0x00,0x3E,0x41,0x49,0x3A,0x00,0x00,0x00,    //"G",39 
0x00,0x7F,0x08,0x08,0x7F,0x00,0x00,0x00,    //"H",40 
0x00,0x41,0x7F,0x41,0x00,0x00,0x00,0x00,    //"I",41 
0x00,0x30,0x40,0x40,0x3F,0x00,0x00,0x00,    //"J",42 
0x00,0x7F,0x08,0x14,0x63,0x00,0x00,0x00,    //"K",43 
0x00,0x7F,0x40,0x40,0x40,0x00,0x00,0x00,    //"L",44 
0x00,0x7F,0x06,0x06,0x7F,0x00,0x00,0x00,    //"M",45 
0x00,0x7F,0x06,0x18,0x7F,0x00,0x00,0x00,    //"N",46 
0x00,0x7F,0x41,0x41,0x7F,0x00,0x00,0x00,    //"O",47 
0x00,0x7F,0x09,0x09,0x06,0x00,0x00,0x00,    //"P",48 
0x00,0x3E,0x51,0x61,0x7E,0x00,0x00,0x00,    //"Q",49 
0x00,0x7F,0x19,0x29,0x46,0x00,0x00,0x00,    //"R",50 
0x00,0x26,0x49,0x49,0x32,0x00,0x00,0x00,    //"S",51 
0x00,0x01,0x7F,0x01,0x01,0x00,0x00,0x00,    //"T",52 
0x00,0x3F,0x40,0x40,0x3F,0x00,0x00,0x00,    //"U",53 
0x00,0x0F,0x70,0x70,0x0F,0x00,0x00,0x00,    //"V",54 
0x00,0x7F,0x30,0x30,0x7F,0x00,0x00,0x00,    //"W",55 
0x00,0x63,0x1C,0x1C,0x63,0x00,0x00,0x00,    //"X",56 
0x03,0x04,0x78,0x04,0x03,0x00,0x00,0x00,    //"Y",57 
0x00,0x61,0x59,0x4D,0x43,0x00,0x00,0x00,    //"Z",58 
0x00,0x00,0x7F,0x41,0x00,0x00,0x00,0x00,    //"[",59 
0x03,0x0C,0x30,0x40,0x00,0x00,0x00,0x00,    //"\",60 
0x00,0x00,0x41,0x7F,0x00,0x00,0x00,0x00,    //"]",61 
0x00,0x02,0x01,0x02,0x00,0x00,0x00,0x00,    //"^",62 
0x00,0x40,0x40,0x40,0x40,0x00,0x00,0x00,    //"_",63 
0x00,0x00,0x03,0x00,0x00,0x00,0x00,0x00,    //"`",64 
0x00,0x20,0x58,0x58,0x78,0x00,0x00,0x00,    //"a",65 
0x00,0x7F,0x48,0x48,0x30,0x00,0x00,0x00,    //"b",66 
0x00,0x30,0x48,0x48,0x48,0x00,0x00,0x00,    //"c",67 
0x00,0x30,0x48,0x48,0x7F,0x00,0x00,0x00,    //"d",68 
0x00,0x30,0x58,0x58,0x10,0x00,0x00,0x00,    //"e",69 
0x00,0x08,0x7C,0x0A,0x08,0x00,0x00,0x00,    //"f",70 
0x00,0x10,0xA8,0xA8,0x78,0x00,0x00,0x00,    //"g",71 
0x00,0x7F,0x08,0x78,0x00,0x00,0x00,0x00,    //"h",72 
0x00,0x00,0x74,0x00,0x00,0x00,0x00,0x00,    //"i",73 
0x00,0x80,0x80,0x74,0x00,0x00,0x00,0x00,    //"j",74 
0x00,0x7F,0x10,0x28,0x48,0x00,0x00,0x00,    //"k",75 
0x00,0x40,0x7F,0x40,0x00,0x00,0x00,0x00,    //"l",76 
0x00,0x78,0x08,0x78,0x78,0x00,0x00,0x00,    //"m",77 
0x00,0x78,0x08,0x08,0x70,0x00,0x00,0x00,    //"n",78 
0x00,0x30,0x48,0x48,0x30,0x00,0x00,0x00,    //"o",79 
0x00,0xF8,0x48,0x48,0x30,0x00,0x00,0x00,    //"p",80 
0x00,0x30,0x48,0x48,0xF8,0x00,0x00,0x00,    //"q",81 
0x00,0x78,0x10,0x08,0x08,0x00,0x00,0x00,    //"r",82 
0x00,0x50,0x58,0x68,0x28,0x00,0x00,0x00,    //"s",83 
0x00,0x08,0x7C,0x48,0x00,0x00,0x00,0x00,    //"t",84 
0x00,0x38,0x40,0x40,0x78,0x00,0x00,0x00,    //"u",85 
0x00,0x18,0x60,0x60,0x18,0x00,0x00,0x00,    //"v",86 
0x18,0x60,0x38,0x60,0x18,0x00,0x00,0x00,    //"w",87 
0x00,0x48,0x30,0x30,0x48,0x00,0x00,0x00,    //"x",88 
0x00,0x18,0xA0,0xA0,0x78,0x00,0x00,0x00,    //"y",89 
0x00,0x48,0x68,0x58,0x48,0x00,0x00,0x00,    //"z",90 
0x00,0x08,0x77,0x41,0x00,0x00,0x00,0x00,    //"{",91 
0x00,0x00,0x7F,0x00,0x00,0x00,0x00,0x00,    //"|",92 
0x00,0x41,0x77,0x08,0x00,0x00,0x00,0x00,    //"}",93 
0x00,0x02,0x01,0x02,0x01,0x00,0x00,0x00,    //"~",94

};

__attribute__((aligned(4))) uint8_t ciphertext = { 
    0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 
    0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d, 
    0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 
    0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2, 
    0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 
    0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16, 
    0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 
    0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 
};

uint8_t encrypt_result;    //库有bug，数据长度大的时候，最后8字节解密失败，原因待查，临时增加8个字节的数据，这样前面的数据可以正常解密 
uint8_t decrypt_result; 
cau_parameter_struct cau_parameter_config; 
cau_key_parameter_struct cau_key_config; 
cau_iv_parameter_struct cau_iv_parameter_config; 
cau_context_parameter_struct cau_context_parameter_config;

void    CAU_Demo(void) 
{ 
    uint8_t i;

    cau_key_struct_para_init(&cau_key_config); 
    cau_iv_struct_para_init(&cau_iv_parameter_config); 
    cau_context_struct_para_init(&cau_context_parameter_config);

    rcu_periph_clock_enable(RCU_CAU); 
    cau_deinit(); 
    cau_struct_para_init(&cau_parameter_config);

    //打印原始数据 
    printf(" \r\n\r\nSource Data %d byte :\r\n\r\n", TEXT_SIZE); 
    printf_data(plaintext, TEXT_SIZE); 
     
    //加密，打印加密数据 
    cau_parameter_config.alg_dir = CAU_ENCRYPT; 
    cau_parameter_config.key = &key_256; 
    cau_parameter_config.key_size = 256; 
    cau_parameter_config.input = &plaintext; 
    cau_parameter_config.in_length = TEXT_SIZE + 8; 
    cau_aes_ecb(&cau_parameter_config, encrypt_result); 
     
    printf(" \r\n\r\nEncrypted Data with AES %d  Mode  ECB :\r\n\r\n", cau_parameter_config.key_size); 
    printf_data(encrypt_result, TEXT_SIZE);

    //解密，打印解密数据 
    cau_parameter_config.alg_dir = CAU_DECRYPT;; 
    cau_parameter_config.key = &key_256; 
    cau_parameter_config.key_size = 256; 
    cau_parameter_config.input = &encrypt_result; 
    cau_parameter_config.in_length = TEXT_SIZE + 8; 
    cau_aes_ecb(&cau_parameter_config, decrypt_result); 
    printf(" \r\n\r\nDecrypted Data with AES %d  Mode  ECB :\r\n\r\n",  cau_parameter_config.key_size); 
    printf_data(decrypt_result, TEXT_SIZE);

} 
运行结果从串口打印，如下图：

Jacktang 发表于 2022-3-18 07:29

这个加密模块测试代码的流程是个什么

wm20031015 发表于 2022-3-19 09:56

Jacktang 发表于 2022-3-18 07:29
这个加密模块测试代码的流程是个什么

开加密模块时钟，初始化化加密模块，配置密钥数据指针、密钥长度，加密数据指针、数据长度，打印出原始数据，对数据加密后，存放在加密数据缓冲区，打印加密数据。对加密模块进行解密配置，然后对加密数据进行解密，存放在解密数据缓冲区，打印解密后的数据。

Jacktang 发表于 2022-3-20 16:16

wm20031015 发表于 2022-3-19 09:56
开加密模块时钟，初始化化加密模块，配置密钥数据指针、密钥长度，加密数据指针、数据长度，打印出原始数 ...

谢谢，了解了

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4 测试加密模块