Semiconductor integrated circuit device, program delivery...

Details Semiconductor integrated circuit device, program delivery... Semiconductor integrated circuit device, program delivery...

2007-06-05

2007-06-05

Song, Hosuk (Department: 2135)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C713S193000, C380S277000

Reexamination Certificate

active

10611879

ABSTRACT:
When an encrypted program and a decryption program are inputted to a first memory, a semiconductor integrated circuit device causes a bus port to disable access from the outside and enables access to the first memory and to a second memory, thereby transferring the encrypted program and the decryption program from the first memory to the second memory. When the transfer is completed, the semiconductor integrated circuit device disables access to the first memory and gives, to a CPU, an instruction to decrypt the encrypted program by using a secret key held in a secret key holder and the decryption program and execute the decrypted program. After the execution of the decrypted program is completed, the semiconductor integrated circuit device disables access to the second memory.

REFERENCES:
patent: 5168151 (1992-12-01), Nara
patent: 5533123 (1996-07-01), Force et al.
patent: 5623637 (1997-04-01), Jones et al.
patent: 6003134 (1999-12-01), Kuo et al.
patent: 6069952 (2000-05-01), Saito et al.
patent: 6438694 (2002-08-01), Saito
patent: 6907526 (2005-06-01), Tanimoto et al.
patent: 2002/0112173 (2002-08-01), Saito
patent: 8-30558 (1996-02-01), None

Affiliated with

Also associated with

Rating

Semiconductor integrated circuit device, program delivery... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor integrated circuit device, program delivery..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor integrated circuit device, program delivery... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3858414