Patents Assigned to Cheyenne Property Trust
  • Patent number: 6178504
    Abstract: An international cryptography framework (ICF) is provided that allows manufacturers to comply with varying national laws governing the distribution of cryptographic capabilities. In particular, such a framework makes it possible to ship worldwide cryptographic capabilities in all types of information processing devices (e.g. printers, palm-tops). The ICF comprises a set of service elements which allow applications to exercise cryptographic functions under the control of a policy. The four core elements of the ICF architecture, i.e. the host system, cryptographic unit, policy activation token, and network security server, comprise an infrastructure that provides cryptographic services to applications. Applications that request cryptographic services from various service elements within the ICF are identified through a certificate to protect against misuse of a granted level of cryptography.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: January 23, 2001
    Assignee: Cheyenne Property Trust c/o Data Securities International, Inc.
    Inventors: Helmut Fieres, Roger Merckling, Keith Klemba
  • Patent number: 5907620
    Abstract: A cryptographic framework consists of four basic service elements that include a national flag card, a cryptographic unit, a host system, and a network security server. Three of the four service elements have a fundamentally hierarchical relationship. The National Flag Card (NFC) is installed into the Cryptographic Unit (CU) which, in turn, is installed into a Host System (HS). Cryptographic functions on the Host System cannot be executed without a Cryptographic Unit, which itself requires the presence of a valid National Flag Card before it's services are available. The fourth service element, a Network Security Server (NSS), can provide a range of different security services including verification of the other three service elements. Several different configurations that support policy within a cryptographic system allow the framework to be adapted to various connection schemes involving, at least, the cryptographic unit and the policy, including dedicated applications, e.g.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: May 25, 1999
    Assignee: Cheyenne Property Trust
    Inventors: Keith Klemba, Roger Merkling, Helmut Fieres
  • Patent number: 5841870
    Abstract: An international cryptography framework (ICF) allows manufacturers to comply with varying national laws governing the distribution of cryptographic capabilities. The invention is concerned primarily with the application certification aspects of the framework where an application that requests cryptographic services from the ICF service elements is identified through some form of certificate to protect against the misuse of a granted level of cryptography. The levels of cryptography granted are described via security policies and expressed as classes of service. A cryptographic unit, one of the ICF core elements, can be used to build several certification schemes for application objects. The invention provides various methods that determine the strength of binding between an application code image and the issued certificates within the context of the ICF elements.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: November 24, 1998
    Assignee: Cheyenne Property Trust
    Inventors: Helmut Fieres, Roger Merckling, Keith Klemba
  • Patent number: 5841869
    Abstract: Trusted processing capability, for example for a cryptographic unit element in an International Cryptography Framework, secures one or more tasks or processes associated with application code. Trusted processing is assured by a trusted element, where use of the trusted element is based upon the principles of separation and locality, i.e. where the trusted element is associated with a trusted computing base that is separated from the operating system and/or data by a trust boundary, and where protected mechanisms are used to access the trusted element, such that trusted execution occurs only locally in a trusted execution area. The trust processing capability also encompasses a policy controlled main CPU.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: November 24, 1998
    Assignee: Cheyenne Property Trust
    Inventors: Roger Merkling, Helmut Fieres, Keith Klemba
  • Patent number: 5740248
    Abstract: An international cryptography framework (ICF) allows manufacturers to comply with varying national laws governing the distribution of cryptographic capabilities. The invention is concerned primarily with the application certification aspects of the framework where an application that requests cryptographic services from the ICF service elements is identified through some form of certificate to protect against the misuse of a granted level of cryptography. The levels of cryptography granted are described via security policies and expressed as classes of service. A cryptographic unit, one of the ICF core elements, can be used to build several certification schemes for application objects. The invention provides various methods that determine the strength of binding between an application code image and the issued certificates within the context of the ICF elements.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: April 14, 1998
    Assignee: Cheyenne Property Trust
    Inventors: Helmut Fieres, Roger Merckling, Keith Klemba
  • Patent number: 5710814
    Abstract: Cryptographic hardware is provided that is disabled at the time of shipment and that is selectively enabled in a trusted fashion using methods and interfaces that may be controlled by and governed by government policy in strict compliance with existing and future legislation. A given cryptographic algorithm is disabled/enabled at several points, referred to as Touch Points, and referred to collectively as Touch Point Logic. Because attributes of each touch point are satisfied by providing data that are referred to as Touch Point Data, manufactures are allowed to include disabled cryptographic hardware in their products and governments are provided with the ability to enable this cryptographic hardware only in compliance with governing legislation.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: January 20, 1998
    Assignee: Cheyenne Property Trust
    Inventors: Keith Klemba, Roger Merkling