Computer system security method and apparatus having program authorization information data structures
INFORMATION PROTECTION AND AUTHENTICATION OF TEXAS, LLCThe holder of the '717 patent has sued Microsoft, Symantec, CA, F-Secure, McAfee, Kaspersky, Sophos, Novell, and PC Tools for infringing this patent.
Summary / Description
| Summary / Description | To provide enhancement needed for a System/370 to operate with MVS, the present invention introduces the concept of the use of storage protect key masks, and is included in a new subsystem control facility that provides: (1) basic authority control with dual address space memory references; (2) program subsystem linkages; and (3) Address Space Number translation to main memory addresses with authorization control. |
Basic Information
| Type of Prior Art | Issued Patents - US |
| Country | United States of America |
| Patent/Application # | 4366537 |
| Kind Code | United States (US) - United STATES Patent - A |
| Patentee Name | International Business Machines Corp. |
| Relevant Pages, Columns, or Lines | col. 3, ln 31-43 |
| URL | http://patft.uspto.gov/netacgi/... |
| Publication Date | May 23, 1980 |
| Additional Information | T |
Notes / To Do
| Notes | |
Excerpt
Instructions that can be executed in either the problem state or the supervisor state when certain authority requirements are met are called semiprivileged instructions. Failure to meet the requirements of the extraction-authority control or the PSW-key mask causes a privileged-operation exception to be recognized. The requirements of the extraction-authority control and the PSW-key mask are not enforced when execution is in supervisor state. Other authority requirements for semiprivileged instructions can cause other program exceptions to be recognized, and these other requirements are enforced regardless of whether execution is in the problem state or the supervisor state.
Relevance
Claims
Claim 61
In a digital computer system for providing improved computer security having digital data processing means for executing a plurality of digital computer programs for a computer user and memory means for storing digital program instructions and digital data, apparatus for protecting a digital computer user from operations typically performable by a digital computer program executing on behalf of a user comprising:
a) means for storing digital authorization information in said memory means which restricts an associated program from performing operations, when executed by said processing means, which are available to said computer user; and
b) means for storing in at least one segment digital data for associating said authorization information with at least one program to be executed by said processing means.
Relevance
a) means for storing digital authorization information in said memory means which restricts an associated program from performing operations, when executed by said processing means, which are available to said computer user
a) means for storing digital authorization information in said memory means which restricts an associated program from performing operations, when executed by said processing means, which are available to said computer user
Claim Chart
All
Claim 1
In a digital computer system having a digital data processing means for executing a plurality of digital programs and a memory means for storing digital program instructions and digital data, apparatus for protecting a digital computer user from operations typically performable by a digital computer program executing on behalf of a user comprising:
a) means for storing a plurality of digital authorization entries in said memory means, wherein said entries qualify operations which an associated program is permitted to perform when executed by said processing means; and
b) means for storing in at least one segment, digital data for associating said authorization entries with at least one program.
Relevance
a) means for storing a plurality of digital authorization entries in said memory means, wherein said entries qualify operations which an associated program is permitted to perform when executed by said processing means
a) means for storing a plurality of digital authorization entries in said memory means, wherein said entries qualify operations which an associated program is permitted to perform when executed by said processing means
Claim Chart
All
Claim 120
In a digital computer system having digital data processing means for executing a plurality of digital computer programs for a computer user and memory means for storing digital program instructions and digital data, a method for providing improved computer security comprising the steps of:
a) storing digital authorization information in said memory means which restricts an associated program from accessing resources when executed by said digital data processing means which are accessible to said computer user; and
b) storing in at least one segment, digital data for associating said authorization information with at least one program to be executed by said processing means for said computer user.
Relevance
a) storing digital authorization information in said memory means which restricts an associated program from accessing resources when executed by said digital data processing means which are accessible to said computer user
a) storing digital authorization information in said memory means which restricts an associated program from accessing resources when executed by said digital data processing means which are accessible to said computer user
Claim Chart
All
