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US 2016/0080336 A1Published application
Key Usage Detection
OwnerMark Ryan, Jiangshan Yuinventors
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Abstract
Key usage detection, and in particular, methods and systems for a recipient of an encrypted message to detect usage of the recipient's secret key.
Claims20
A method for a recipient of an encrypted message to detect usage of a first key belonging to the recipient wherein:
- a sender and the recipient establish a second key using the first key;
- the recipient publishes a commitment relating to the second key in a log;
- the sender verifies the published commitment;
- and
- the recipient monitors the log to detect usage of the first key.
2 more elements
A method of exchanging an encrypted digital message between a sender and a recipient that holds a first key, wherein:
- the sender and the recipient establish a second key using the first key;
- the recipient publishes a commitment relating to the second key in a log;
- the sender verifies the published commitment;
- and
- the recipient monitors the log to detect usage of the first key.
2 more elements
A system comprising
- a first key held by a recipient of an encrypted message;
- a log;
- and
- a computer program product comprising instructions that, when executed by a computer, implement a protocol for the recipient of an encrypted message to detect usage of the first key wherein, according to said protocol:
- a sender and the recipient establish a second key using the first key,
- the recipient publishes a commitment relating to the second key in a log,
- the sender verifies the published commitment, and
- the recipient monitors the log to detect usage of the first key.
5 more elements
Dependencies are inferred from the claim text.