Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2007-01-17
2010-10-12
Dada, Beemnet W (Department: 2435)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S162000, C713S190000, C726S021000
Reexamination Certificate
active
07814337
ABSTRACT:
A secure flash-card reader reads a user ID from a secure card and finds a matching entry with a hashed password in a user table on the reader. An encrypted key is received from a secure host that hashes and encrypts a password the user types into the host and the user's ID. A card decryption engine uses a random number to decrypt the encrypted key and recover the hashed password and user ID from the secure host, which is compared by a comparator to the hashed password and user ID from the user table. A mismatch causes an access controller to block access to encrypted data on the secure card. Flash data is transferred over a flash-serial buffer bus between flash-card controllers and a RAM buffer. An encryption engine on the flash-serial buffer bus encrypts and decrypts data and connects to a serial engine to the host.
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Lee Charles C.
Lee Edward W.
Shen Ming-Shiang
Yu I-Kang
Auvinen Stuart T.
Dada Beemnet W
gPatent LLC
Super Talent Electronics Inc.
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