Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1995-10-26
1998-05-26
Tarcza, Thomas H.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 4, 380 25, 395186, H04L 900, G04F 1128
Patent
active
057579148
ABSTRACT:
A computer system has a program module verifier and at least first and second program modules. Each program module includes a digital signature and an executable procedure The first program module furthermore includes a procedure call to the second procedure module, a procedure call to the program module verifier that is logically positioned in the first program module so as to be executed prior to execution of the procedure call to the second program module, and instructions preventing execution of the procedure call to the second program module when the procedure call to the program module verifier results in a verification denial being returned by the program module verifier. The second program module includes an executable procedure to be performed in response to the procedure call by the first program module to the second program module, a procedure call to the program module verifier that is logically positioned in the second program module so as to be executed prior to completion of execution of the second program module's executable procedure, and instructions preventing completion of execution of that executable procedure when the program module verifier returns a verification denial with respect to the first program module. The program module verifier responds to procedure calls by verifying the authenticity of any specified program module and by returning a verification confirmation or denial. When the program module verifier fails to verify the authenticity of a program module, the calling program module throws an exception and aborts its execution.
REFERENCES:
patent: 4845715 (1989-07-01), Francisco
patent: 4930073 (1990-05-01), Cina, Jr.
patent: 5235642 (1993-08-01), Wobber et al.
patent: 5288978 (1994-02-01), Iijima
patent: 5343527 (1994-08-01), Moore
patent: 5347632 (1994-09-01), Filepp et al.
patent: 5542045 (1996-07-01), Levine
Laufer Pinchus M.
Sun Microsystems Inc.
Tarcza Thomas H.
Williams Gary S.
LandOfFree
System and method for protecting use of dynamically linked execu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for protecting use of dynamically linked execu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for protecting use of dynamically linked execu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1973261