Vyrty Corporation

Microsoft Technology Licensing, LLC

Raif Khassanov

Eugene Luskin

Eugene Kolker

Yakov P Grinberg

Alexandra Kashpar

Mihai Petriuc

Artsiom Kokhan

Chadd Creighton Merrigan

A sharing package data structure for the secure maintenance and sharing of information relating to a person with one or more parties is described. The data structure comprises: (1) a version of the data that has been encrypted in such a way that a data decryption key is needed to decrypt it; (2) a hash on the data decryption key; and (3) access control list entries each containing a version of the data decryption key that has been encrypted with a public key associated with a different party authorized to access the data. The contents of the data structure are usable to provide access to a decrypted version of the data to a party that is able to decrypt the encrypted data decryption key stored in one of the access control entries.

Encryption scheme for making secure patient data available to authorized parties

A facility for accessing information relating to a person is described. In a reader device, the facility accesses first credentials stored in a first storage device, second credentials stored in a second storage device, and third credentials stored in the reader device. In the reader device, the facility uses a combination of the first credentials, second credentials, and third credentials to decrypt information relating to the person stored in the first storage device.

Secure access to individual information

A facility stores a person's personal information ('PI') on a portable storage device ('PSD') of the person. In some cases, the PSD bears a fax number mapping uniquely to the person; when a fax containing the person's PI is sent to this fax number, the facility stores an encrypted version of the PI on a relay server (&#x201c;RS&#x201d;). When the PSD connects with an access device, the encrypted version of the PI is retrieved from the RS and stored on the PSD. In some cases, the PSD bears a non-textual visual symbol; when its images is captured by a device such as a smartphone, an identifier encoded in the symbol is used to transmit encrypted PI to the RS. In some cases, each access device reports aggregates of personal data to an analysis server. In some cases, the facility statistically obfuscates these aggregates for transmission to/storage on the analysis server.

A search index structure which extends a typical composite index by incorporating an index which is optimized for fast retrieval from storage and which eliminates data which is specific to phrase searching. Other data is represented in a manner which allows it to be calculated rather than stored. Associating variable length entries with logical categories allows their length to be inferred from the category rather than stored. Using delta values between document IDs rather than the ID itself generates a compact, dense symbol set which is efficiently compressed by Huffman encoding or a similar compression method. Using an upper threshold to remove large, and thus rare, delta values from the symbol set prior to encoding further improves the encoding performance.

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Sammamish, WA, United States of America

Raif Khassanov