Cryptography – Particular algorithmic function encoding
Reexamination Certificate
2006-04-18
2008-09-23
Moise, Emmanuel I (Department: 2137)
Cryptography
Particular algorithmic function encoding
C380S029000, C380S042000, C380S043000
Reexamination Certificate
active
07428306
ABSTRACT:
An encryption apparatus and method for providing an encrypted file system are provided. The encryption apparatus and method of the illustrative embodiments uses a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
REFERENCES:
patent: 4074066 (1978-02-01), Ehrsam et al.
patent: 6249866 (2001-06-01), Brundrett et al.
patent: 6324286 (2001-11-01), Lai et al.
patent: 6405315 (2002-06-01), Burns et al.
patent: 6772343 (2004-08-01), Shimizu et al.
patent: 6952477 (2005-10-01), Lotspiech
patent: 6986043 (2006-01-01), Andrew et al.
patent: 7092525 (2006-08-01), Matchett et al.
patent: 7093126 (2006-08-01), Jutla
patent: 7103180 (2006-09-01), McGregor, Jr.
patent: 7151831 (2006-12-01), Candelore et al.
patent: 7155657 (2006-12-01), Bordes et al.
patent: 7200226 (2007-04-01), Bace
patent: 7203842 (2007-04-01), Kean
patent: 7280956 (2007-10-01), Cross et al.
patent: 2001/0018736 (2001-08-01), Hashimoto et al.
patent: 2001/0040883 (2001-11-01), Chang et al.
patent: 2002/0051534 (2002-05-01), Matchett et al.
patent: 2002/0101989 (2002-08-01), Markandey et al.
patent: 2003/0063741 (2003-04-01), Hanounki
patent: 2003/0188179 (2003-10-01), Challener et al.
patent: 2003/0228018 (2003-12-01), Vince
patent: 2004/0015768 (2004-01-01), Bordes et al.
patent: 2004/0059912 (2004-03-01), Zizzi
patent: 2004/0223611 (2004-11-01), Yan et al.
patent: 2004/0230805 (2004-11-01), Peinado et al.
patent: 2004/0250091 (2004-12-01), Henry et al.
patent: 2005/0132201 (2005-06-01), Pitman et al.
patent: 2005/0144468 (2005-06-01), Northcutt et al.
patent: 2005/0166069 (2005-07-01), Hashimoto et al.
patent: 2005/0180572 (2005-08-01), Graunke
patent: 2005/0234655 (2005-10-01), Batra et al.
patent: 2006/0037041 (2006-02-01), Zhang
patent: 2006/0075225 (2006-04-01), Flynn et al.
patent: 2006/0107044 (2006-05-01), Krishna et al.
patent: 2006/0153379 (2006-07-01), Candelore et al.
patent: 2006/0159266 (2006-07-01), Chavanne et al.
patent: 2006/0245588 (2006-11-01), Hatakeyama
patent: 2006/0294595 (2006-12-01), Drihem
patent: 0982894 (2000-03-01), None
patent: 2374260 (2002-10-01), None
Campbell et al., “Trusted Objects”, 1999, pp. 1-7, obtained from http://www.osti.gov/bridge/servlets/purl/14158-EYOITP/webviewable/14158.pdf.
Celikkan Ufuk
Conklin William C.
Mullen Shawn P.
Shankar Ravi A.
Baca Matthew W.
Moise Emmanuel I
Popham Jeffrey D
Walder, Jr. Stephen J.
LandOfFree
Encryption apparatus and method for providing an encrypted... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Encryption apparatus and method for providing an encrypted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encryption apparatus and method for providing an encrypted... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3975234