Steven W Neckyfarow

US Patent:

47990619, Jan 17, 1989

Filed:

Nov 18, 1985

Appl. No.:

6/799367

Inventors:

Dennis G. Abraham - Concord NC
Glen P. Double - Concord NC
Steven W. Neckyfarow - Matthews NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G07D 700
H04K 100
H04L 900

US Classification:

34082534

Abstract:

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 under its key for transmission as a first value to a second terminal whose identity is to be authenticated. The second terminal decrypts the transmitted first value using its key deriving a second value (which equals the random number if the keys are identical. ) The second terminal then encrypts its key using the second value as the key, generating a third value which is transmitted back to the first terminal for verification. The first terminal then verifies the third value, either by decrypting it using the random number as the key to obtain its key or by encrypting its key using the random number as key to derive the third number (if the two keys are identical. ) Optionally, roles of the two terminals are then reversed after the second terminal has been identified, allowing the second terminal to authenticate the first terminal.

US Patent:

50480855, Sep 10, 1991

Filed:

Oct 6, 1989

Appl. No.:

7/418068

Inventors:

Dennis G. Abraham - Concord NC
Steven G. Aden - Charlotte NC
Todd W. Arnold - Charlotte NC
Steven W. Neckyfarow - Charlotte NC
William S. Rohland - Charlotte NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04K 100

US Classification:

380 23

Abstract:

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. Both the security method and the apparatus for embodying these functions across a total system or network using a common cryptographic architecture are disclosed. Authorization to perform there functions in the various security component device nodes in the network can be distributed to the various nodes at which they will be executed in order to personalize the use of the components.

US Patent:

51484811, Sep 15, 1992

Filed:

Jul 1, 1991

Appl. No.:

7/723875

Inventors:

Dennis G. Abraham - Concord NC
Steven G. Aden - Charlotte NC
Todd W. Arnold - Charlotte NC
Steven W. Neckyfarow - Charlotte NC
William S. Rohland - Charlotte NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 900

US Classification:

380 46

Abstract:

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. Both the security method and the apparatus for embodying these functions across a total system or network using a common cryptographic architecture are disclosed. Authorization to perform these functions in the various security component device nodes in the network can be distributed to the various nodes at which they will be executed in order to personalize the use of the components.

Address:

75 Santee Dr, Chocowinity, NC 27817

VIN:

JTNBB46K073033006

Make:

TOYOTA

Model:

CAMRY HYBRID

Year:

2007