Storage protection utilizing public storage key control

Details Storage protection utilizing public storage key control Storage protection utilizing public storage key control

1991-06-06

1992-11-10

Cangialosi, Salvatore

Cryptography

Cryptanalysis

380 30, 395425, H04K 100, G06F 1214

Patent

active

051630966

ABSTRACT:
Provides three access levels of storage key protection, comprising a supervisory level (key 0), an intermediate level of non-public and non-supervisory keys (keys 1-8, 10-15), and an unique public level (key 9). The program routines operating with a supervisory-level access key can access both the public level and the intermediate level of storage blocks. Although a program routine operating with an access key in the intermediary access level cannot access any supervisory level storage block, it can access any block assigned a public level storage key, as well as any storage block assigned the respective intermediate level key. One or more third-level public storage keys (PSKs) may be provided. A program access key using one of the PSK values can only access blocks having the same PSK value, and it cannot access blocks having any other key value.

REFERENCES:
patent: 3576544 (1971-04-01), Cordero, Jr. et al.
patent: 3761883 (1973-09-01), Alvarez et al.
patent: 3825903 (1974-07-01), Brown
patent: 4366537 (1982-12-01), Heller et al.
patent: 4405829 (1983-09-01), Rivest et al.
patent: 4424414 (1984-01-01), Hellman et al.
patent: 4471163 (1984-09-01), Donald et al.
patent: 4472790 (1984-09-01), Burk et al.
patent: 4589064 (1986-05-01), Chiba et al.
patent: 4668318 (1990-08-01), Mineo
patent: 4954982 (1990-09-01), Tateishi et al.

Affiliated with

Also associated with

Rating

Storage protection utilizing public storage key control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Storage protection utilizing public storage key control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage protection utilizing public storage key control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2300629