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1. (US20190229909) KEY RECOVERY

Office : United States of America
Application Number: 15994334 Application Date: 31.05.2018
Publication Number: 20190229909 Publication Date: 25.07.2019
Publication Kind : A1
IPC:
H04L 9/08
H04L 9/30
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
06
the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
08
Key distribution
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
28
using particular encryption algorithm
30
Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy
CPC:
H04L 9/30
H04L 9/0894
H04L 9/0869
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: Ankur PATEL
Daniel James BUCHNER
Priority Data:
Title: (EN) KEY RECOVERY
Abstract: front page image
(EN)

Generating a private key recovery seed based on random words extracted from an input memory of a user and using the recovery seed to recover the private key. An input that is related to a specific memory of a user is received. The specific memory was previously entered and used to generate random words that are related to each other by being included in the specific memory. The random words are extracted from the received input. The random words are associated with a first private key recovery mechanism for recovering a private key. The random words are input into the first private key recovery mechanism to generate a recovery seed. The recovery seed is input into a second private key recovery mechanism. The second private key recovery mechanism generates a recovered private key upon performing a recovery operation on the private key recovery seed.