Sebastian G Angel

US Patent:

20190340391, Nov 7, 2019

Filed:

Jul 15, 2019

Appl. No.:

16/512098

Inventors:

- Redmond WA, US
Sebastian G. Angel - New York NY, US

International Classification:

G06F 21/62
H04L 29/06
G06Q 10/10
H04L 12/58

Abstract:

Techniques for multiple message retrieval for secure electronic communication are described. The techniques, for instance, utilize a server and computing devices employing a private information retrieval scheme to allow a receiving device to locate multiple electronic communications on a server, request delivery of the multiple electronic communications without the server being aware of which electronic communication are requested, and receive the electronic communications without the server being aware of which electronic communications were sent. For example, the server may utilize an efficient electronic communication storage structure for storing and retrieving multiple electronic communications.

US Patent:

20190325082, Oct 24, 2019

Filed:

Apr 19, 2018

Appl. No.:

15/957386

Inventors:

- Redmond WA, US
Hao Chen - Redmond WA, US
Srinath T V Setty - Redmond WA, US
Sebastian Angel - New York NY, US

International Classification:

G06F 17/30

Abstract:

Systems, methods, and computer-executable instructions for reducing amortized computational costs for a query that includes receiving at least two indexes for elements stored in an n-element database. The n-element database is encoded into at least three buckets. Each element is stored within at least two buckets. Each bucket stores a proper subset of the n-elements. For each of the two indexes, a bucket is determined to retrieve the element at the index. The determined buckets are queried to retrieve the elements. The elements at the indexes are retrieved based on the querying the determined buckets.

US Patent:

20180107843, Apr 19, 2018

Filed:

Oct 17, 2016

Appl. No.:

15/295608

Inventors:

- Redmond WA, US
Sebastian G. Angel - New York NY, US

Assignee:

Microsoft Technology Licensing, LLC - Redmond WA

International Classification:

G06F 21/62
H04L 12/58
G06F 17/30
H04L 29/06

Abstract:

Techniques for multiple message retrieval for secure electronic communication are described. The techniques, for instance, utilize a server and computing devices employing a private information retrieval scheme to allow a receiving device to locate multiple electronic communications on a server, request delivery of the multiple electronic communications without the server being aware of which electronic communication are requested, and receive the electronic communications without the server being aware of which electronic communications were sent. For example, the server may utilize an efficient electronic communication storage structure for storing and retrieving multiple electronic communications.

US Patent:

20180109500, Apr 19, 2018

Filed:

Oct 17, 2016

Appl. No.:

15/295493

Inventors:

- Redmond WA, US
Sebastian G. Angel - New York NY, US

Assignee:

Microsoft Technology Licensing, LLC - Redmond WA

International Classification:

H04L 29/06
H04L 12/58
G06F 17/30

Abstract:

Techniques are disclosed for secure electronic communication. Examples of metadata include identification of a relationship of a sender and receiver, timing of a communication between the sender and receiver, and frequency of communication between the sender and receiver. The described techniques, for instance, may be implemented to allow a user device to request delivery from a server of an electronic communication and receive the electronic communication without the server being aware of which electronic communication was received.