Secure key management using programable control vector checking

Details Secure key management using programable control vector checking Secure key management using programable control vector checking

1990-04-09

1991-04-09

Cangialosi, Salvatore

Cryptography

Key management

Having particular key generator

380 25, H04K 100

Patent

active

050070894

ABSTRACT:
The invention includes a control vector checking code respository located either within the same system as the crytographic facility or alternately remotely from the system containing the cryptographic facility. The control vector checking code repository will be linked to the cryptographic facility by one of several means. A first means for linking the repository to the cryptographic facility would include a physically secure data communications link. A second means for connecting the repository to the cryptographic facility would be by using an insecure channel with authentication, wherein either a modification detection code or alternately a message authentication code would be transmitted to the cryptographic facility and then the desired control vector checking code would be transmitted over the link. The cryptographic facility will include a code authorization mechanism to compare the transmitted MAC or MDC with a corresponding value computed from the received control vector checking code. If the two values of the MDC or the MAC compare, then the control vector checking code is authenticated and loaded into the control vector checking unit for carrying out the control vector checking operations desired. The control vector checking code repository can be located in a remote system connected by means of the communications link to the crypto facility, or alternately the repository can reside in the same system as the crypto facility. This provides for the dynamic updating of control vector checking code, where improvements or alterations are made to the control vector checking sequence. This also provides for a reduced memory size in the crypto facility, being sufficiently large to accommodate subsidiary control vector checking applications, with alternate control vector checking applications requiring the reloading of the control vector checking unit from the repository.

REFERENCES:
patent: 4218738 (1980-08-01), Matyas et al.
patent: 4223403 (1980-09-01), Konheim et al.
patent: 4227253 (1980-10-01), Ehrsam et al.
patent: 4386233 (1983-05-01), Smid et al.
patent: 4500750 (1985-02-01), Elander et al.
patent: 4503287 (1985-03-01), Morris et al.
patent: 4578530 (1986-03-01), Zeidler
patent: 4620276 (1986-10-01), Daniell et al.
patent: 4683968 (1987-08-01), Appelbaum et al.
patent: 4723283 (1988-02-01), Nagasawa et al.
patent: 4723284 (1988-02-01), Munck et al.
patent: 4850017 (1989-07-01), Matyas et al.
patent: 4908861 (1990-03-01), Matyas et al.
patent: 4918728 (1990-04-01), Matyas et al.
patent: 4924514 (1990-05-01), Matyas et al.
patent: 4924515 (1990-05-01), Matyas et al.
patent: 4941176 (1990-07-01), Matyas et al.
R. W. Jones, "Some Techniques for Handling Encipherment Keys," ICL Technical Journal, Nov. 1982, pp. 175-188.
D. W. Davies & W. L. Price, "Security for Computer Networks," John Wiley & Sons, NY, 1984, Section 6.5, Key Management with Tagged Keys, pp. 168-172.

Affiliated with

Also associated with

Rating

Secure key management using programable control vector checking does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Secure key management using programable control vector checking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secure key management using programable control vector checking will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2040970