Veracrypt documentation pdf1/10/2024 With persistence, it is possible to install additional software to use with Tails. With data persistence you can even inadvertently save configuration files you didn’t intend to by linking files from a directory into the home folder, or by setting a custom directory to be made persistent (for more, see Section 3.3.7). If the integrity check fails, BitLocker is placed in recovery mode, where you can use a recovery key to decrypt the volume. Note that although you can use BitLocker without a TPM, you will not get the added security of verification of system integrity prior to startup. You can set a PIN on the TPM so that, in combination with the USB flash drive, you have multifactor authentication. Other alternatives that may be implemented by some FVE programs include storing the key on a smart card (which, of course, requires a smart card reader), a biometric authentication mechanism (which requires a fingerprint scanner or other bio reader device), or retrieving the key over the network during the Preboot Execution Environment (PXE) process.īitLocker allows you to use a TPM and/or an external USB device. If the computer does not have a TPM, or even if it does, another place that you can store the decryption key for FVE is on an external removable drive such as a USB flash drive. If you move an encrypted drive to a new computer, install a new motherboard (with a new TPM), disable the TPM, or make changes to the boot configuration settings or the BIOS/EUFI the TPM may see this as a failure of the integrity check and your drive will not be decrypted. The down side of this is that if the motherboard/TPM should experience hardware failure, you might not be able to decrypt the disk-unless you have another recovery key stored elsewhere. Because the TPM is embedded in the motherboard, this means that if someone removes the hard drive from the computer and puts it in another one, they cannot decrypt the disk without the key. There are several approaches: If the computer has a TPM, the key can be stored there. The solution is to store the key externally. And you do not want to store it on an unencrypted partition on the hard disk that would make it available to unauthorized persons and negate the purpose of encryption. Obviously, that key cannot be stored on the encrypted disk itself that would be like locking your car keys inside your vehicle to keep them safe. When implementing a full volume/disk encryption solution, you face a dilemma: an operating system on an encrypted volume cannot boot until its boot files are decrypted so, the key has to be available before the OS loads a user interface. Debra Littlejohn Shinder, in Windows Server 2012 Security from End to Edge and Beyond, 2013 Starting an OS on an Encrypted Volume
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