Other Parts Discussed in Thread: C2000WARE,
- 1可以在035上添加mbedtls 实现对一些加密算法的快捷操作吗？
- 2如果不能调用mbedtls库，可否使用c2000ware中的libraries\security\crypto\c28中的aes和sha加密算法在035上实现aes的加解密以及HMAC-SHA 256对密钥的组合
在035工程上添加mbedtls 2.16.0后调用
void aes_cbc_encrypt(const unsigned char *plaintext, size_t plaintext_len,
unsigned char *ciphertext, size_t *ciphertext_len,
const unsigned char key[16]) {
unsigned char iv[IV_SIZE] = {0};
mbedtls_aes_context aes;
mbedtls_aes_init(&aes);
// 1. 设置加密密钥
mbedtls_aes_setkey_enc(&aes, key, 128);
// 2. PKCS7填充
size_t padded_len = ((plaintext_len + 15) / 16) * 16;
unsigned char padded[padded_len];
memcpy(padded, plaintext, plaintext_len);
memset(padded + plaintext_len, padded_len - plaintext_len, padded_len - plaintext_len);
// 3. 加密
mbedtls_aes_crypt_cbc(&aes, MBEDTLS_AES_ENCRYPT, padded_len,
iv, padded, ciphertext);
*ciphertext_len = padded_len;
mbedtls_aes_free(&aes);
}
unsigned char MiYao[] = {0xE1, 0xFF, 0xCA, 0xF2, 0x5F, 0xA4, 0x2A, 0x92, 0x47, 0x02, 0x9C, 0xAD, 0x10, 0x34,0x30}; // 秘钥
unsigned char A[] = {0x02}; // 带加密数据
unsigned char *ciphertext = NULL;
size_t ciphertext_len = 0;
void Aes_Test(void)
{
aes_cbc_encrypt(A,(size_t)1,ciphertext,&ciphertext_len,MiYao);
}
//在主循环中调用一次Aes_Test主循环寻中调佣
void vMain_Loop(void)
{
//局部变量定义
static Uint16 u16S12V_count =0;//12V急停开关量计数
static Uint16 u16TempTest = 0;//
Uint32 u32PFCpowerMIN =0;
if(u16TempTest == 0)
{
u16TempTest = 1;
Aes_Test();
}
}
会报错提示#10099-D
1已尝试添加mbedtls库在2.16.0版本可以在不调用库的时候不报错，调用报错ebss
void aes_cbc_encrypt(const unsigned char *plaintext, size_t plaintext_len,
unsigned char *ciphertext, size_t *ciphertext_len,
const unsigned char key[16]) {
unsigned char iv[IV_SIZE] = {0};
mbedtls_aes_context aes;
mbedtls_aes_init(&aes);
// 1. 设置加密密钥
mbedtls_aes_setkey_enc(&aes, key, 128);
// 2. PKCS7填充
size_t padded_len = ((plaintext_len + 15) / 16) * 16;
unsigned char padded[padded_len];
memcpy(padded, plaintext, plaintext_len);
memset(padded + plaintext_len, padded_len - plaintext_len, padded_len - plaintext_len);
// 3. 加密
mbedtls_aes_crypt_cbc(&aes, MBEDTLS_AES_ENCRYPT, padded_len,
iv, padded, ciphertext);
*ciphertext_len = padded_len;
mbedtls_aes_free(&aes);
}
unsigned char MiYao[] = {0xE1, 0xFF, 0xCA, 0xF2, 0x5F, 0xA4, 0x2A, 0x92, 0x47, 0x02, 0x9C, 0xAD, 0x10, 0x34,0x30}; // 秘钥
unsigned char A[] = {0x02}; // 带加密数据
unsigned char *ciphertext = NULL;
size_t ciphertext_len = 0;
void Aes_Test(void)
{
aes_cbc_encrypt(A,(size_t)1,ciphertext,&ciphertext_len,MiYao);
}
void vMain_Loop(void)
{
//局部变量定义
static Uint16 u16S12V_count =0;//12V急停开关量计数
static Uint16 u16TempTest = 0;//
Uint32 u32PFCpowerMIN =0;
if(u16TempTest == 0)
{
u16TempTest = 1;
Aes_Test();
}