05301231 is referenced by 168 patents and cites 24 patents.

In a cryptographic module, a User Defined Function (UDF) facility is provided which provides users with the capability of defining and creating custom functions to meet their cryptographic processing needs. The cryptographic module is contained within a physically and logically secure environment and comprises a processing unit and memory connected to the processing unit. The memory includes code for translating User Defined Functions (UDFs) into a machine-readable form and at least one command for operating on the UDFs. The UDFs are loaded into and executed in the secure area of the cryptographic module without compromising the total security of the transaction security system.

Title
User defined function facility
Application Number
7/834634
Publication Number
5301231
Application Date
February 12, 1992
Publication Date
April 5, 1994
Inventor
James V Stevens
Huntersville
NC, US
Stephen M Matyas
Manassas
VA, US
An V Le
Manassas
VA, US
Donald B Johnson
Manassas
VA, US
John M Hudson
Manassas
VA, US
Daniela Henningsmeyer
Stuttgart
DE
Dennis G Abraham
Concord
NC, US
Agent
Calfee Halter & Griswold
Assignee
International Business Machines Corporation
NY, US
IPC
H04L 9/00
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