Microsoft Technology Licensing, LLC

Pivotcloud, Inc.

Alephcloud Systems, Inc.

Lars Kuhtz

Andrey Shur

Irina Gorbach

Venkatesh Krishnan

Dmitry Denisov

Roy Peter D'Souza

Michael Entin

Marina Galata

Sumant Mehta

Sudipta Sengupta

Wolfram Schulte

Michael Ray Clark

John Thomas Erickson

Vinod Sridharan

Xianzheng Dou

Sumalatha Adabala

Gitika Aggarwal Saubhasik

Deduplication is integrated with software building and chunk storing. A dedup module includes dedup software, a build graph interface, and a chunk store interface. A dedup graph includes a portion of the build graph, and a portion that represents build artifact file chunks. The dedup software queries whether chunks are present in the chunk store, submits a chunk for storage when the chunk is not already present, and avoids submitting the chunk when it is present. Queries may use hash comparisons, a hash tree dedup graph, chunk expiration dates, content addressable chunk store memory, inference of a child node's presence, recursion, and a local cache of node hashes and node expiration dates, for example. A change caused by the build impacts fewer dedup graph nodes than directory graph nodes, resulting in fewer storage operations to update the chunk storage with new or changed build artifacts.

Chunk storage deduplication using graph structures

Embodiments are directed to securing data in the cloud, securely encrypting data that is to be stored in the cloud and to securely decrypting data accessed from the cloud. In one scenario, an instantiated trust service receives information indicating that a trust server is to be instantiated. The trust service instantiates the trust server, which is configured to store key references and encrypted keys. The trust service receives the public key portion of a digital certificate for each publisher and subscriber that is to have access to various specified portions of encrypted data. A data access policy is then defined that specifies which encrypted data portions can be accessed by which subscribers.

Trust services for securing data in the cloud

Embodiments include method, systems, and computer program products for filtering trust services records. Embodiments include receiving a trust services record that includes a plurality of security components and that is usable to secure data that is stored in an untrusted location. It is determined whether the trust services record has been tampered with, including verifying each of the plurality of security components of the trust services record. The trust services record is filtered based on the determination of whether the trust services record has been tampered with. The filtering includes, when the trust services record is determined to have not been tampered with, allowing performance of at least one task with respect to the secured data; and, when the trust services record is determined to have been tampered with, disallowing performance of any task with respect to the secured data.

Securely filtering trust services records

Methods, systems and apparatuses for a mediator controlling access to an electronic content, are disclosed. One method includes receiving, by a mediator device of a mediator, a second share SKfrom an owner device, wherein a first share SKis provided to a member device of a member of a group by the owner device. Further, the mediator receives a request from the member for mediation, including the mediator receiving a dispatch of the header of the encrypted electronic content. Further, the mediator receives a request for mediation, including the mediator receiving a dispatch of the header of the encrypted electronic content from the member. Further, the mediator determines whether the member is eligible to decrypt the electronic content, if eligible, the mediator responding to the request for mediation with a member accessible header, wherein the member accessible header includes the header after application of SK.

Mediator device monitoring and controlling access to electronic content

Embodiments are directed to mapping encryption policies to data stored in a database using a policy identifier, and to accessing data stored in a database using a policy identifier. In one scenario, a computer system receives an indication that identifies which type of encryption is to be applied when encrypting a specified portion of data stored in a database. The database has a database schema identified by a database schema identifier, where the database schema defines relationships for data stored in the database. The computer system then accesses a namespace that identifies a set of databases in which the specified portion of data is accessed in the same manner. The computer system also generates a policy identifier, which contains information including the namespace and the database schema identifier.

Data mapping using trust services

Methods, systems and apparatuses for a mediator controlling access to an electronic content, are disclosed. One method includes receiving, by a mediator server of a mediator, a second share SKfrom an owner server, wherein a first share SKis provided to a member server of a member of a group by the owner server. Further, the mediator receives a request for mediation, including the mediator receiving a dispatch of the header of the encrypted electronic content from the member. Further, the mediator determines whether the member is eligible to decrypt the electronic content, if eligible, the mediator responding to the request for mediation with a member accessible header, wherein the member accessible header includes the header after application of SK.

Mediator monitoring and controlling access to electronic content

Embodiments are directed to securely filtering trust services records. In one scenario, a client computer system receives at least one of the following trust services records: a trust services certificate, a principal certificate, a group certificate and a trust services policy. The client computer system performs a time validity check to validate the trust services record's timestamp, performs an integrity check to validate the integrity of the trust services record and performs a signature validity check to ensure that the entity claiming to have created the trust services record is the actual creator of the trust services record. The client computer system then, based on the time validity check, the integrity check and the signature validity check, determines that the trust services record is valid and allows a client computer system user to perform a specified task using the validated trust services record.

Embodiments are directed to mapping encryption policies to user data stored in a database using a policy column uniform resource identifier (URI). In one scenario, a computer system receives the following: a database schema name that identifies the name of a specified schema within a relational database in which user data is stored, a table name that identifies a specified table within the relational database, a column name that identifies a specified column in the specified table and a namespace identifier that identifies a set of relational databases. The computer system also receives an indication that identifies which type of encryption is to be applied when encrypting the column of data specified by the column name. The computer system then generates a policy column URI that includes a hierarchical string comprising the namespace identifier, the database schema name, the table name and the column name.

Methods, systems and apparatuses for monitoring and controlling access to an electronic content are disclosed. One method includes creating, by an owner server, a group comprising generating a group public key PKand a group secret key SK. The method further includes adding, by the owner server, a member to the group, comprising generating a first share SKfrom the group secret key SKand a public key of a member, and a second share SKfrom the group secret key SKand a public key of a mediator, and providing, by the owner server, the first share SKto a member server of the member and the second shares SKto a mediator server of the mediator.

Growing community of inventors

Seattle, WA, United States of America

Lars Kuhtz