Electrical computers and digital processing systems: support – Data processing protection using cryptography
Reexamination Certificate
2007-04-25
2010-06-29
Peeso, Thomas R (Department: 2432)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
C713S193000, C380S028000, C380S284000
Reexamination Certificate
active
07747870
ABSTRACT:
An encrypted-data decrypting apparatus that provides enhanced security protection for programs and data while they are in the processes of decryption to execution after having been encrypted. When a decrypted partial program needs to be loaded into the shared memory M, the controlling unit11loads it into an area indicated by the memory location information. According to the memory location information, a plurality of partial programs are sequentially loaded into an area so that one partial program gets overwritten by another; therefore, none of the partial programs exists in the memory for a long time, and thus there is less possibility of having the partial programs referred to illegitimately. In addition, since every time some data is decrypted, the decryption support program authenticating unit13confirms authenticity of the decryption support program P, it is possible to prevent having illegitimate references in which the decryption support program is abused.
REFERENCES:
patent: 4649510 (1987-03-01), Schmidt
patent: 6052780 (2000-04-01), Glover
patent: 6405316 (2002-06-01), Krishnan et al.
patent: 2001/0034846 (2001-10-01), Beery
patent: 2001/0042209 (2001-11-01), Sato
patent: 2002/0016918 (2002-02-01), Tucker et al.
patent: 2002/0038428 (2002-03-01), Safa
patent: 199659457 (1997-01-01), None
patent: 200053403 (2000-10-01), None
patent: 0 908 810 (1999-04-01), None
patent: 9-6232 (1997-01-01), None
patent: 11-39156 (1999-02-01), None
patent: 97/03398 (1997-01-01), None
Abe Toshihisa
Asai Rieko
Hirota Teruto
Ito Yoshikatsu
Matsushima Hideki
Panasonic Corporation
Peeso Thomas R
Wenderoth , Lind & Ponack, L.L.P.
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