![]() ![]() Decrypted with the user’s encryption password, if this protector is enabled for a given volume. ![]() The data is encrypted with VMK (Volume Master Key), which in turn can be obtained in one of the following ways: By default, AES-128 is used to encrypt data in either XTS (new) or CBC (legacy) mode. How BitLocker worksīitLocker makes use of symmetric encryption. For those who need extra protection against additional threats, the developers allowed specifying a pre-boot PIN code or adding other types of protectors (e.g. Ideally, the user would never notice the encryption this goal has been achieved. The top priority, however, was that the protection was as transparent and as unobtrusive to the user as possible. Running an alternate OS for gaining access to the data.Altering the computer’s configuration for gaining access to the data.Moving the hard drive to a different system for analysis.Signing in to the user’s account without valid authentication credentials.When Windows developers were designing the disk encryption scheme, they attempted to counter the following threats: In this article, I will talk about the role of TPM in BitLocker encryption. The operating system must provide APIs for developers for accessing the TPM, and uses TPM to manage encryption keys. The main functions of TPM are the generation, storage and secure management of cryptographic keys in particular, the BitLocker keys. The platform consists of a secure cryptoprocessor and a small amount of built-in memory. Standalone TPM module for Asus motherboards: On a physical level, the TPM might be implemented as a built-in chip, an additional module one can install into a slot on the desktop motherboard, or as a virtual emulator (the Intel PTT technology). Trusted Platform Module (TPM) is a standard for a secure cryptoprocessor, a dedicated microcontroller designed to secure hardware through integrated cryptographic keys. ![]() ![]() In this article, we’ll talk about the protection that TPM chips provide to BitLocker volumes, and discuss vulnerabilities found in today’s TPM modules. Investigating a BitLocker-encrypted hard drive can be challenging, especially if the encryption keys are protected by the computer’s hardware protection, the TPM. ![]()
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