Prior art — US Patent 9135456

Here is an analysis of the most relevant prior art for US patent 9135456, based on the citations found on the Google Patents page. The "Prior art date" for US9135456 is listed as 2004-10-25. Many of the cited references share inventors with US9135456 and have priority dates significantly earlier (e.g., 2000-05-18), making them highly pertinent.

Most Relevant Prior Art Citations:

US6804780B1 - System and method for storing data utilizing threshold cryptography
- Inventors: Roger S. Davenport, et al.
- Publication Date: 2004-10-12
- Priority Date: 2000-05-18
- Brief Description: This patent describes a system and method for securely storing and retrieving data using threshold cryptography. It involves splitting data into multiple shares (or portions) and distributing these shares across various storage facilities. The original data can only be reconstructed if a specific threshold number of these shares are available, thus enhancing security by preventing data compromise if only a subset of shares is accessed.
- Potential Anticipation of US9135456 Claims (35 U.S.C. § 102): This reference is highly relevant and potentially anticipates many of the core claims of US9135456. Specifically:
  - Claims 1 (method for securing data), 2 (parsing comprises splitting data into at least two portions), 5 (storing in at least two different locations), 6 (reconstituting data), 7 (receiving and processing portions to assemble data): Directly anticipated by the teaching of splitting data into shares and storing them in multiple locations for later reconstruction.
  - Claims 11 (system for securing data), 12 (data splitting module splits data into at least two portions), 15 (at least two data storage facilities configured to store portions in different locations), 16 (data assembly module configured to reconstitute data), 17 (data assembly module processes portions to assemble data): Directly anticipated by the system described for threshold cryptography.
  - Claims 30-38 (method of securing data using random values, forming combined values, creating pairings, and storing in separate media): The underlying mathematical operations and distribution logic for splitting and combining data using random values (e.g., XOR operations) as described in US9135456 claims 31, 32, 37, 38 are strongly anticipated by the detailed descriptions of threshold cryptography in US6804780B1. The concept of creating and storing pairings for reconstruction is central to threshold schemes.
US20040225892A1 - System and method for storing and retrieving data utilizing threshold cryptography
- Inventors: Roger S. Davenport, et al.
- Publication Date: 2004-11-11
- Priority Date: 2000-05-18
- Brief Description: This is a continuation-in-part of earlier work, detailing similar concepts to US6804780B1 regarding threshold cryptography for data storage and retrieval, where data is split and distributed to enhance security.
- Potential Anticipation of US9135456 Claims (35 U.S.C. § 102): Same as US6804780B1, as it is a related application covering the same core subject matter. It directly anticipates claims related to data splitting, storage, and reconstitution.
US7073060B2 - System and method for securing data in motion
- Inventors: Mark S. O'Hare, et al.
- Publication Date: 2006-07-04
- Priority Date: 2000-05-18
- Brief Description: This patent describes a system and method for securing data during transmission (data in motion). It achieves this by splitting the data into multiple portions and transmitting these portions over different communication channels or at different times. The aim is to prevent reconstruction of the original data even if one of the transmitted portions is compromised.
- Potential Anticipation of US9135456 Claims (35 U.S.C. § 102): This reference is highly relevant, especially given that US9135456's specification explicitly mentions "secure data in motion".
  - Claims 1 (method for securing data), 2 (parsing comprises splitting data into at least two portions), 5 (storing/transmitting in at least two different locations), 6 (reconstituting data), 7 (receiving and processing portions to assemble data): Directly anticipated by the concept of splitting data for secure transmission and subsequent reassembly.
  - Claims 11 (system for securing data), 12 (data splitting module splits data into at least two portions), 15 (at least two data storage facilities configured to store portions in different locations), 16 (data assembly module configured to reconstitute data), 17 (data assembly module processes portions to assemble data): Anticipated by the system components described for securing data in motion through splitting and reassembly.
US6950943B2 - System and method for generating keys for data
- Inventors: Roger S. Davenport, et al.
- Publication Date: 2005-09-27
- Priority Date: 2000-05-18
- Brief Description: This patent describes a system and method for generating cryptographic keys in a secure manner. The key is not fully formed or stored in a single, vulnerable location, but rather generated and managed through a process involving multiple portions or shares.
- Potential Anticipation of US9135456 Claims (35 U.S.C. § 102): This reference is highly relevant to the secure handling of cryptographic keys.
  - Claims 8 (data comprises at least one cryptographic key), 18 (system where data comprises at least one cryptographic key), 21 (system for facilitating cryptographic functions), 27 (data splitting module configured to split cryptographic keys into at least two portions), 28 (data storage facilities configured to store portions of cryptographic keys in different locations), 29 (data assembling module processes portions to assemble cryptographic keys): Directly anticipated by the teachings of generating and managing cryptographic keys in a split and distributed manner, where the complete key is never exposed.
US7100057B1 - System and method for providing user-independent security, portability, availability, and straightforwardness for cryptographic functions
- Inventors: Rick L. Orsini, et al.
- Publication Date: 2006-08-29
- Priority Date: 2000-05-18
- Brief Description: This patent describes a system and method designed to offer user-independent security for cryptographic functions by managing cryptographic keys and authentication data on a secure, centralized server (a "trust engine"). This approach prevents "key migration" and enhances portability and availability by not releasing the actual keys to client devices.
- Potential Anticipation of US9135456 Claims (35 U.S.C. § 102): This is highly relevant as it describes the core "trust engine" concept emphasized in US9135456's specification.
  - Claims 8 (data comprises at least one cryptographic key), 18 (system where data comprises at least one cryptographic key), 21 (system for facilitating cryptographic functions), 25 (cryptographic handling module performs cryptographic functions), 26 (cryptographic keys comprise symmetric, public, private keys): Anticipated by the server-centric management and use of cryptographic keys within a secure system without releasing them to users.
  - Claims 1, 11, 30, 35 (general methods/systems for securing data and cryptographic data): The overall architecture and philosophy of centralizing and securing cryptographic functions and data on a trusted server are anticipated.
US6975736B1 - Biometric based cryptographic system
- Inventors: Rick L. Orsini, et al.
- Publication Date: 2005-12-13
- Priority Date: 2000-05-18
- Brief Description: This patent describes a cryptographic system that integrates biometric authentication. It focuses on securely storing biometric data and using it to authenticate a user for cryptographic operations, ensuring that private keys remain secure and are not exposed during the process.
- Potential Anticipation of US9135456 Claims (35 U.S.C. § 102): This reference is highly relevant to the biometric and authentication aspects of US9135456.
  - Claims 9 (data comprises at least one biometric), 19 (system where data comprises at least one biometric), 21 (system for facilitating cryptographic functions), 22 (data splitting module configured to split authentication data into at least two portions), 23 (data storage facilities store portions of authentication data), 24 (data assembling module processes portions to assemble authentication data), 34 (data comprises authentication data): Directly anticipated by the secure storage, splitting (if applicable to biometric data in US6975736B1), and use of biometric data for authentication within a cryptographic system.

Other Relevant Prior Art Citations (sharing common inventors and/or priority dates):

Many other citations listed are related to the above core patents, often being applications (A1) or continuations (B2, B1). These also broadly anticipate claims related to:

Secure cryptographic functions via smart cards (US6859891B1, US20020152398A1, US20040225882A1): These patents discuss performing cryptographic functions without exposing sensitive data to the host, which generally relates to claims 1, 8, 11, 18, 21, 25, 30, 35 of US9135456.
Trusted digital signature and notarization (US6701431B1, US20020152399A1): These cover secure digital signing where private keys are kept on a server, anticipating claims related to secure cryptographic functions and key management.
Secure communication and storage of biometric authentication data (US7139925B2, US20020184518A1, US20040225894A1): These further reinforce the anticipation of claims related to biometric data and its secure handling for authentication.
User selectable levels of trust and authentication (US7003666B1, US7143431B2, US20030097587A1, US20040225885A1): These address dynamically adjusting authentication strength based on context, relevant to the authentication engine's heuristics mentioned in US9135456's specification.
Context sensitive authentication (US7003665B1, US20030097588A1, US20040225886A1): These specifically describe adapting authentication based on transaction context, anticipating aspects of the authentication process in US9135456.
Trust arbitrage (US6975734B1, US20020184520A1, US20040225887A1): These relate to comparing and translating trust levels between different systems, which US9135456 mentions in its interoperability process.
Multiple independent authentication systems (US7003667B1, US20030097589A1, US20040225888A1): These describe using redundancy in authentication, directly relating to the redundancy module in US9135456.
Audit trails for cryptographic processes (US6973574B1, US20020184521A1, US6519630B1, US20040225890A1): While not directly anticipating the core data parsing claims, these patents describe a supporting feature (audit trails) for secure cryptographic systems, a feature also present in US9135456.
General cryptographic systems and methods of use (US6854064B1, US20020161994A1, US20040225896A1): These provide broad coverage of secure cryptographic systems, which would generally anticipate the overall system and method claims of US9135456.

The significant overlap in inventors, priority dates, and technical subject matter indicates that many of these prior art documents collectively disclose and potentially anticipate a substantial portion of the inventions claimed in US9135456.