| Patent Number |
Title Of Patent |
Date Issued |
| 6684334 |
Secure establishment of cryptographic keys using persistent key component |
January 27, 2004 |
| An apparatus and method is disclosed for securely establishing a unique cryptographic key in a first cryptographic device, for example an Automated Teller Machine (ATM). In a preferred embodiment, the ATM includes means for entering a key component and an ATM processor board, and the |
| 6606387 |
Secure establishment of cryptographic keys |
August 12, 2003 |
| A system and method are disclosed for securely establishing a cryptographic key between a first cryptographic device, for example a host cryptographic security module, and a second cryptographic device, for example a bank Automated Teller Machine (ATM). A plurality of key components is g |
| 5745576 |
Method and apparatus for initialization of cryptographic terminal |
April 28, 1998 |
| The present invention provides a method and apparatus for initializing cryptographic terminals in a cryptographic system. The invention provides a base key that is common to all controllers produced by a manufacturer of cryptographic systems. The base key is installed by the manufacturer |
| 5301231 |
User defined function facility |
April 5, 1994 |
| 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 |
| 5237616 |
Secure computer system having privileged and unprivileged memories |
August 17, 1993 |
| The microprocessor resides along with its protected real address space in a secure module surrounded by tamper resistant circuitry pad. Encryption programs and encryption keys are stored in the protected memory. A second real address space is also connected to the address and data bus of |
| 5177791 |
Secure translation of usage-control values for cryptographic keys |
January 5, 1993 |
| A working key of a certain key type is to be transmitted from a first system (having a first usage-control value associated with keys of the certain type) and a second system (having a second usage-control value associated with keys of the certain type). A translation control value, |
| 5148481 |
Transaction system security method and apparatus |
September 15, 1992 |
| An improved security system is disclosed which uses an IC card to enhance the security functions involving component authentication, user verification, user authorization and access control, protection of message secrecy and integrity, management of cryptographic keys, and auditability. |
| 5103478 |
Secure management of keys using control vectors with multi-path checking |
April 7, 1992 |
| A requested cryptographic function is validated for performance in conjunction with a cryptographic key, by inputting a first portion of an associated control vector into a first control vector checker, which outputs a first authorization signal if the requested cryptographic functio |
| 5048085 |
Transaction system security method and apparatus |
September 10, 1991 |
| An improved security system is disclosed which uses an IC card to enchance the security functions involving component authentication, user verification, user authorization and access control, protection of message secrecy and integrity, management of cryptographic keys, and auditablity. |
| 4993069 |
Secure key management using control vector translation |
February 12, 1991 |
| A cryptographic system and method is provided which accepts a key K encrypted under a key formed by exclusive-ORing a key-encrypting key KK with a first control vector C5 and outputs the same key K encrypted under a key formed by exclusive-ORing KK with a second control vector C6. The |
| 4941176 |
Secure management of keys using control vectors |
July 10, 1990 |
| The invention is an apparatus and method for validating that key management functions requested for a cryptographic key by the program have been authorized by the originator of the key. The invention includes a cryptographic facility characterized by a secure boundary through which p |
| 4924515 |
Secure management of keys using extended control vectors |
May 8, 1990 |
| A method and apparatus are disclosed for use in a data processing system which executes a program which outputs cryptographic service requests for operations with cryptographic keys which are associated with control vectors defining the functions which each key is allowed by its originat |
| 4924514 |
Personal identification number processing using control vectors |
May 8, 1990 |
| Cryptographic PIN processing is achieved in an improved manner by associating control vectors with the PIN generating (verification) keys and PIN encrypting keys which provide authorization for the uses of the keys intended by the originator of the keys. The originator may be the loc |
| 4918728 |
Data cryptography operations using control vectors |
April 17, 1990 |
| Data cryptography is achieved in an improved manner by associating with the data cryptography key, a control vector which provides the authorization for the uses of the key intended by the originator of the key. Among the uses specified by the control vector are limitations on encryption |
| 4799061 |
Secure component authentication system |
January 17, 1989 |
| A system for authenticating components in a communications system using cryptographic techniques to determine if each has the proper key without disclosing information which would be useful to an imposter in deriving the key. A random number generated at a first terminal is encrypted und |
| 4486784 |
Image compression systems |
December 4, 1984 |
| A system for compressing image data, when input in the form of run length coded sequential lines of image data, encodes variable length segments of the current to-be-coded line two dimensionally in terms of the detected relationship between the constants of five registers. The run length |
