USB Disk encryption methods related knowledge

U disk in the use of data protection technology generally divided into two software and hardware, the former use of software encryption, the latter will be dedicated encryption chip to do u disk, from the hardware level encryption. So what's the difference between the two?

In simple terms, hardware encryption technology generally refers to the use of AES 128-bit or 256-bit hardware data encryption technology to encrypt the product hardware, with the prevention of violent cracking, password guessing, data recovery and other functions. and software encryption is through the product built-in encryption software to achieve the encryption function of the storage device. At the same time, hardware encryption methods are mainly keyboard-type encryption, card-type encryption, fingerprint encryption and so on. and software encryption is mainly password encryption, certificate encryption, CD-ROM encryption.

In short, both have their own advantages. Hardware encryption is more reliable than software encryption in data security, and Plug and Play, no need to install encryption password software, more convenient to use. and software encryption in technology and cost less than hardware encryption, easy to achieve, cost-effective. Therefore the market uses the software to encrypt the product to be compared to the hardware encryption product the price is low.

From a security point of view, software encryption than hardware encryption is more easily cracked, such as brute force cracking software, the product format, the storage of data flash chip removal and other extreme ways, can easily crack software encryption. Relatively speaking, hardware encryption because the encryption technology is solidified in the hardware control chip, the entire encryption process left almost no traces on the computer, password transmission process is also in the form of ciphertext transmission, so it is difficult to be hijacked by the Trojan, even if intercepted is garbled, so the possibility of cracking is very low.