Hewlett-packard Development Company, L.p.

Micro Focus Lcc

Entit Software LLC

Compaq Computer Corporation, Inc.

Tandem Computers Incorporated

Susan K Langford

Dale W Hopkins

Larry M Hines

Terence Spies

Tomas Sander

Michael John Sabin

Thomas W Collins

Jeff Kalibjian

Ching-Hsuan Chen

Vladimir Libershteyn

Steven W Wierenga

John Martin Lewis

Ted A Hadley

W Dale Hopkins

Ralph Bestock

Donald P Matthews, Jr

Chris A Windle

John W Clark

Steve Wierenga

Examples disclosed herein relate to encryption of community-based security information. Some examples may enable authorizing a user of a community to access an encrypted data item (e.g., at least an encrypted portion of community-based security information of that community) using a decryption key. The community may be generated on a security information sharing platform based on a set of community attributes. The decryption key may comprise a private key corresponding to each user attribute of a set of user attributes that are associated with the authorized user where the set of user attributes satisfy the set of community attributes.

Encryption of community-based security information

Examples disclosed herein relate to generating communities on a security information sharing platform. Some examples may enable identifying a set of community attributes to be used to generate a community on the security information sharing platform that enables sharing of security information among a plurality of communities. Some examples may enable authorizing a first user to access community-based security information of the community where the first user is associated a set of user attributes that satisfy the set of community attributes. A security indicator may be obtained from the first user of the community. Information related to the security indicator may be obtained from a second user of the community. Some examples may enable including the security indicator and the information related to the security indicator in the community-based security information of the community.

Communities on a security information sharing platform

According to examples, an apparatus may include a security enclosure, a main processor housed in the security enclosure, and a physical security monitoring control unit (PSMCU) processor housed in the security enclosure. The PSMCU processor may cause the apparatus to switchably operate between a first mode and a second mode. In the first mode, the PSMCU processor may allow access by the main processor to a first cryptographic key while preventing access by the main processor to a second cryptographic key. In addition, in the second mode, the PSMCU processor may allow access by the main processor to the second cryptographic key while preventing access by the main processor to the first cryptographic key.

Separate cryptographic keys for multiple modes

Example implementations relate to a security information sharing platform that enables sharing of security information among a plurality of members. For example, in an implementation, a system may determine that a first member of a community of a security information sharing platform is entitled access to a first set of encrypted information shared by a second member of the community. The system may also receive a request, from the first member, to access the first set of encrypted information, the request including a masked parameter. The system may also determine that the masked parameter matches an access parameter for accessing the first set of encrypted information and provide the first member access to the first set of encrypted information in response to determining that the masked parameter matches the access parameter.

Parameter based data access on a security information sharing platform

A technique includes performing a plurality of instances of retrieving components of a security key from a plurality of locations of an electronic device and constructing the security key from the components. The technique includes inhibiting electromagnetic field-based eavesdropping from being used to reveal the security key, where the inhibiting includes varying a protocol that is used to retrieve the components among the instances.

Inhibiting electromagnetic field-based eavesdropping

In one embodiment, a method of implementing trusted compliance operations inside secure computing boundaries comprises receiving, in a secure computing environment, a data envelope from an application operating outside the secure computing environment, the data envelope comprising data and a compliance operation command, verifying, in the secure computing environment, a signature associated with the data envelope, authenticating, in the secure computing environment, the data envelope, notarizing, in the secure computing environment, the application of the command to the data in the envelope, executing the compliance operation in the secure environment; and confirming a result of the compliance operation to a client via trusted communication tunnel.

Trusted compliance operations inside secure computing boundaries

Systems, methods, and apparatus are provided for policy protected cryptographic Application Programming Interfaces (APIs) that are deployed in secure memory. One embodiment is a method of software execution. The method includes executing an application in a first secure memory partition; formatting a request to comply with a pre-defined secure communication protocol; transmitting the request from the application to a cryptographic application programming interface (API) of the application, the API being in a second secure memory partition that is separate and secure from the first secure memory partition; and verifying, in the second secure memory partition, that the request complies with a security policy before executing the request.

Policy based cryptographic application programming interface in secure memory

In one implementation, a data set including a plurality of data values having an order is stored at a memory having a plurality of memory locations. Each data value from the data set stored a current memory location of that data value from the plurality of memory locations. Each data value from the data set is periodically moved from the current memory location of that data value from the plurality of memory locations to a next memory location of that data value from the plurality of memory locations. The next memory location of each data value from the plurality of memory locations is the current memory location of that data value from the plurality of memory locations after the moving. The plurality of data values is then provided in the order to a client in response to a request for the data set.

Methods, systems, and apparatus to prevent memory imprinting

A system and method are described supporting secure implementations of 3DES and other strong cryptographic algorithms. A secure key block having control, key, and hash fields safely stores or transmits keys in insecure or hostile environments. The control field provides attribute information such as the manner of using a key, the algorithm to be implemented, the mode of use, and the exportability of the key. A hash algorithm is applied across the key and control for generating a hash field that cryptographically ties the control and key fields together. Improved security is provided because tampering with any portion of the key block results in an invalid key block. The work factor associated with any manner of attack is sufficient to maintain a high level of security consistent with the large keys and strong cryptographic algorithms supported.

Method and system for secure storage, transmission and control of cryptographic keys

In one embodiment a secure computer system comprises a processor and a memory module including logic instructions stored on a computer readable medium which. When executed by the processor, the logic instructions configure the processor to receive, in a secure computing environment, a portion of a data log from an application operating outside the secure computing environment, and when the portion of the data log exceeds a size threshold, to assign a timestamp to the portion of the data log, assign an identifier to the portion of the data log, create a digital signature load block comprising the portion of the data log, the timestamp, and the identifier, and store the digital signature load block in a memory module.

Secure data log management

A method and apparatus are disclosed for improving public key encryption and decryption schemes that employ a composite number formed from three or more distinct primes. The encryption or decryption tasks may be broken down into sub-tasks to obtain encrypted or decrypted sub-parts that are then combined using a form of the Chinese Remainder Theorem to obtain the encrypted or decrypted value. A parallel encryption/decryption architecture is disclosed to take advantage of the inventive method. REEXAMINATION RESULTS The questions raised in reexamination request No./,, filed May,and reexamination request No./,, filed on Jul.,, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required byU.S.C.as provided inCFR.()

Public key cryptographic apparatus and method

A system and method are described supporting secure implementations of 3DES and other strong cryptographic algorithms. A secure key block having control, key, and MAC fields safely stores or transmits keys in insecure or hostile environments. The control field provides attribute information such as the manner of using a key, the algorithm to be implemented, the mode of use, and the exportability of the key. A MAC algorithm is applied across the key and control for generating a MAC field that cryptographically ties the control and key fields together. Improved security is provided because tampering with any portion of the key block results in an invalid key block. The work factor associated with any manner of attack is sufficient to maintain a high level of security consistent with the large keys and strong cryptographic algorithms supported.

A method and apparatus are disclosed for improving public key encryption and decryption schemes that employ a composite number formed from three or more distinct primes. The encryption or decryption tasks may be broken down into sub-tasks to obtain encrypted or decrypted sub-parts that are then combined using a form of the Chinese Remainder Theorem to obtain the encrypted or decrypted value. A parallel encryption/decryption architecture is disclosed to take advantage of the inventive method.

Multiprime RSA public key cryptosystem

A system and method are provided for performing modulo multiplication of two numbers N bits long with a modulus of 2,&plus;1, where the resulting modulus is determined without a need to perform successive reductions. Without a need to perform successive reductions, a hardware implementation does not require a divider circuit.

Growing community of inventors

Sunnyvale, CA, United States of America

Susan K Langford