Which of the following has a storage root key?

A.
HSM

B.
EFS

C.
TPM

D.
TKIP

Explanation:
Trusted Platform Module (TPM) is a hardware-based encryption solution that is embedded in the system’s motherboard and is enabled or disable in BIOS. It helps
with hash key generation and stores cryptographic keys, passwords, or certificates on non-volatile (NV) memory. Data stored on NV memory is retained unaltered
when the device has no power. The storage root key is embedded in the TPM to protect TPM keys created by applications, so that these keys cannot be used
without the TPM.
Incorrect Answers:
A: Hardware Security Module (HSM) hardware-based encryption solution that is usually used in conjunction with PKI to enhance security with certification
authorities (CAs). It is available as an expansion card and can cryptographic keys, passwords, or certificates. However, the HSM does not have a storage root key.
B: Encrypting File System (EFS) is used to encrypt files or entire volumes in a Windows computer. It uses certificates to encrypt the data but do not have a storage
root key.
D: TKIP (Temporal Key Integrity Protocol) is an encryption protocol used in Wireless networks. It was designed to provide more secure encryption than the
relatively weak Wired Equivalent Privacy (WEP) and does not have a storage root key.

http://www.cs.bham.ac.uk/~mdr/teaching/modules/security/lectures/TrustedComputingTCG.htm l
http://en.wikipedia.org/wiki/Hardware_security_module
http://searchmobilecomputing.techtarget.com/definition/TKIP Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex,
Indianapolis, 2014, pp 171, 237