Today's U disk and other mobile storage is really a cabbage price compared to a few years ago, a 4GU disk is only a few dozen dollars, many users are used to bring a U disk as a home and company Between the file transfer station, but this small U disk is very easy to lose, there is a memory is valuable and the data is priceless, it does not matter if the U disk is lost, but the important information files inside are taken for people with ulterior motives. The loss is big.
In order not to leak important information, many users have turned to various U disk encryption tools, but the U disk encryption tools on the market are uneven, some are even pseudo-encryption, and some are also due to design flaws. The user's file is lost, so that the user is not worth the loss. Is there a secure encryption tool?
In fact, users who use Windows7 have a very secure encryption tool. With it, you can safely encrypt the USB disk without having to Worried about the risk of being illegally cracked. This is the BitLocker encryption feature of Windows 7.
In Windows7, the operation of encrypting the U disk with BitLocker is very simple. You only need to select “Enable BitLocker” in the right-click menu of the drive letter of the U disk to enter the BitLocker Encryption Wizard.
The first choice is to lock the way, the ordinary user can choose the password to unlock the way, remember to set the password must be a strong password to eliminate the possibility of brute force. The smart card unlocking method is only available to users who have a smart card.
(Smart card is a small plastic card with a computer chip. Smart cards are usually issued by the information technology (IT) department of a large company. To use a smart card, you also need a smart card reader that is installed or connected to The computer can read the information stored on the smart card.)
The next step is to save the recovery key. The so-called recovery key is actually a text file with a string of decrypted characters inside, which is forgotten by the user. You can use this string of characters to decrypt the USB flash drive, so this file needs to be properly kept. If you confirm that you will not forget the encrypted password you set, you can delete the recovery key.
(If BitLocker detects that a system condition may indicate a security risk when the computer starts, such as a disk error, a change to the BIOS, or a change to any startup files, BitLocker will lock the drive and require a specific BitLocker Recover the password to unlock it. Make sure to create this recovery password the first time you open BitLocker; otherwise, you may lose access to the file permanently.)
The next step is waiting time, waiting The encryption operation of the entire USB flash drive is completed, and the time taken depends on the size and transmission rate of the USB flash drive. Don't worry, it takes so long to open the encryption. The U disk that is encrypted is the same as the U disk before the encryption. When the user saves the file to the USB flash drive, the encryption process is automatically completed. This process is only a moment, and vice versa.
So, how to use BitLocker encrypted U disk? In Windows7 system, users only need to access the encrypted U disk, a decryption dialog box will pop up, and the U can be unlocked after entering the password. Disk, then you can use the U disk as usual. This is just an unlock operation performed on the current computer, not a decryption operation. That is to say, after unlocking, the file encryption (file storage into the U disk) and decryption (copying the file from the U disk to the local) are automatically performed in the background.
If you don't want to enter your password every time, you can check the option “Automatically unlock on this computer from now on” and you will be automatically unlocked after inserting the encrypted USB flash drive in your computer.
Using BitLocker encrypted U disk is not available without decryption. Even if you get it to others, you can only hope that the U disk will sigh without a password. The other party can only format the U disk.
BitLocker encrypted U disk will display a bunch of files when opened under Windows XP. This is, users need to find the BitLockerToGo executable file and run it, it will open BitLocker To Go reader, this reader is Microsoft Designed specifically for users to decrypt BitLocker encrypted USB flash drives in Windows XP, but it should be noted that this tool can only help users to read files in encrypted U disk, but can not modify or add deleted files.