![]() ![]() ![]() By contrast B2LG is concerned strictly with reading data after the OS has been already booted into a steady state. IronKey is one of the better known examples of “secure flash drive,” a category of products targeted at enterprises and security-conscious users for portable storage with hardware encryption. From a certain perspective, this entire category owes its existence to a failure of smart card adoption in the same target market. All of the functionality of dedicated hardware encryption products can be implemented with equal or better security, at much lower cost and greater flexibility using general purpose smart cards and off-the-shelf software.Ĭase in point: BitLocker-To-Go (“B2LG” for short) available in Windows 7 and later versions, provides full disk encryption for any old USB drive, with keys managed externally. B2LG is closely related to the original Bitlocker feature introduced in Vista, which protected boot volumes with the help of a trusted platform module. The latter is a more difficult proposition, as booting a modern OS involves several stages, each depending on executing code from the encrypted disk. Maintaining integrity of this code loaded during boot is as much of a concern as confidentiality, because altering the operating system can be an avenue of bypass against disk encryption.
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