What are the encryption methods of U disk?

1. Fake encryption
This kind of encrypted USB flash drive does not have a real sense of encryption, only need to use the password cracking tool can read out the data of the USB flash drive, you can also put fash on other PCB board, you can read the original USB flash drive files, security is relatively poor.
2. Soft encryption
Soft encryption refers to the use of built-in or accompanying software to encrypt the content of the USB flash drive, the general algorithm is AES, this way can eliminate the shortcomings of fake encryption by cracking the password tool can read the data of the USB flash drive, but the encryption process needs to be completed on the PC side, so there are still security risks of intercepted passwords.
3. Secure encryption
Hardware encryption refers to the control chip inside the U disk for encryption, can achieve real-time encryption, the whole encryption process is completed inside the u disk, the advantage of this method is a higher level of security, but need to use a special hardware encryption and decryption chip for encryption, the cost will be relatively high.
Common U disk hardware encryption technology
1, fingerprint encryption U disk built-in fingerprint acquisition recognizer, everyone's fingerprint is unique and unchanged for life. Relying on this uniqueness and stability, a person can be matched with his fingerprint to verify his real identity, and the data encryption and decryption function can be realized through this method. The advantage is that the security level is very high, the processing/decryption speed is fast, the disadvantage is that the fingerprint characteristics of some people or some groups are less, and it is difficult to image
2, key rate U disk
Built-in physical number/letter key, by manually entering the pre-set password to achieve encryption/decryption function, the password is saved in the encryption chip, can be separated from the computer to solve data, while supporting multiple accounts (administrator, ordinary users), a variety of permissions (read and write, read-only) and other functions. The advantage is that the security level is high, and the data can also be added/disassembled in real time. The disadvantage is that you must always remember the password, because if you forget the password, you cannot retrieve the data through other methods.