Block-level storage device with content security

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Security kernel or utility

Reexamination Certificate

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Details

C713S193000, C726S026000, C726S027000, C726S028000, C726S029000, C726S031000, C726S033000, C380S201000, C380S202000, C380S203000, C380S204000, C380S264000

Reexamination Certificate

active

08010790

ABSTRACT:
A block-level storage device is provided that implements a digital rights management (DRM) system. In response to receiving a public key from an associated host system, the storage device challenges the host system to prove it has the corresponding private key to establish trust. This trust is established by encrypting a secure session key using the public key. The host system uses its private key to recover the secure session key. The storage device may store content that has been encrypted according to a content key. In addition, the storage device may encrypt the content key using the secure session key.

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Menezes et al. Handbook of Applied Cryptography, CRC Press, 1997, Section 8.4 “Elgamal public key encryption” and Section 12.5 “Key transport based on pubic-key encryption”.

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