Wipe Encrypted Drives to Make them Reusable Once the system is booted, a custom BIOS requests a passphrase from the user to decrypt the content and grant access to the drive. With hardware encryption, encryption sits between the system BIOS and the operating system. SEDs are incredibly secure as they remain independent of the operating system and prevent any access from hackers. Unlike software-based encryption, SEDs automatically encrypt the data without the need for any user input for encryption. The SEDs create random data encryption keys (DEK) through an onboard AES encryption chip which encrypts the data when it is written and decrypts the data when it is being read. A Self-Encrypting Drive or SED can be an HDD or an SSD that automatically encrypts and decrypts data as it is written or read by the user. This is referred to as hardware-based encryption. Such drives are known as self-encrypting drives or SEDs. Sometimes, the drive is encrypted by the utility provided by the drive manufacturer. Software encryption can be done by using native operating system encryption like Windows BitLocker, or other software utilities like LastPass, VeraCrypt, DiskCryptor, etc. When data is written to the drive it is encrypted using the key and is decrypted by the same key before it is presented to the program/user. This software-generated key is encrypted with a passphrase which the user needs to get access to the encrypted data. A software encryption program is used to encrypt data on a storage drive by creating a unique key and storing it on the computer memory and the storage drive. Encryption Types: Software and Hardware EncryptionÄata can be encrypted on the drives via software-based encryption or hardware-based encryption. In this event, the hacker cannot gain access to the data. Encryption provides a fortified layer of protection just in case unauthorized access is somehow granted to a computer network or storage device. Encrypted information cannot be accessed without using an encryption key or password. Encryption is the technique of converting data from plaintext (unencrypted) to ciphertext (encrypted), an unreadable code in order to prevent unauthorized access.
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