Question

我将消息加密到客户端（c ++），使用aes，服务器（C＃）对其进行解密。如果发布服务器上的构建调试客户端说如果消息是一个值大于127的变量（int64_t），如果它小于ok则无法解密消息

消息的结构

class version : public ::google::protobuf::Message
{

string* software_;
int64_t version_;
};

我的代码

uint32_t encrypt(const unsigned char *in, unsigned char **out, uint32_t size)
{
/**
 * tresh - ivec change after AES_cbc_encrypt
 */
unsigned char _ivec[AES_BLOCK_SIZE];
memcpy(&_ivec, &ivec, AES_BLOCK_SIZE);
/**/

uint32_t size_out = this->getBlockSize(size);
unsigned char *in_padding = (unsigned char*)malloc(size_out);
memset(in_padding, size_out - size, size_out);
memcpy(in_padding, in, size);

AES_KEY _key;
AES_set_encrypt_key(key, PK_SIZE_KEY*BITS_IN_BYTE, &_key);
AES_cbc_encrypt(in_padding, *out, size_out, &_key, _ivec, AES_ENCRYPT);

free(in_padding);

return size_out;
};

uint32_t getBlockSize(uint32_t size)
{
if((size % AES_BLOCK_SIZE) != 0){
    size /= AES_BLOCK_SIZE;
    size += 1;
    size *= AES_BLOCK_SIZE;
}
return size;
};

如何解决？非常奇怪

Answer 1

更改了代码并确定

uint32_t getBlockSize(uint32_t size)
{
size /= AES_BLOCK_SIZE;
size += 1;
size *= AES_BLOCK_SIZE;
return size;
};

AES_cbc_encrypt加密无法在mac os上发布

1 个答案: