Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Security kernel or utility
Reexamination Certificate
2006-03-23
2011-10-18
Moazzami, Nasser (Department: 2436)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Security kernel or utility
C713S165000
Reexamination Certificate
active
08041947
ABSTRACT:
System for providing a secure file service includes an MLS file service module (300) comprised of a cryptographic processor (302). The MLS file service module also includes an MLS file system (301) hosted by the cryptographic processor. A secure user processor (402) includes programming and communications hardware for requesting at least one classified file from the MLS file service module. The cryptographic processor includes cryptographic hardware and software to decrypt the classified file. The cryptographic processor is also performs an integrity check on the classified file. Once the file is decrypted and its integrity checked by the cryptographic processor, the MLS file service module serves the classified file to the secure user processor in decrypted form. If the classified file is an executable file, the method also includes selectively enabling a write function for program memory of the secure user processor. This write function is disabled immediately after the classified executable file has been loaded into the program memory to guard against self modifying programs.
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Information about Related Patents and Patent Applications, see section 6 of the accompanying Information Disclosure Statement Letter, which concerns Related Patents and Patent Applications.
Blessing John
Murray Jeffrey
O'Brien Terence W.
Schmalbach Richard
Fox Rothschild LLP
Harris Corporation
Moazzami Nasser
Sacco Robert J.
Shehni Ghazal
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