Extended data signing

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United States of America Patent

PATENT NO 8850189
APP PUB NO 20130111206A1
SERIAL NO

13725398

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Abstract

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Various embodiments enable so-called extended data to be added to a signed digital certificate without having a private key of a Certification Authority available. In at least some embodiments, a request to add extended data to a digital certificate generated by a certificate authority is received from a client device. The digital certificate includes a signed first portion, and an unsigned second portion that includes reserved empty spaces that are reserved for the extended data. The extended data is added to the unsigned second portion. the extended data includes a client ID associated with the client device. The unsigned portion of the digital certificate is signed after the extended data is added.

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Patent Owner(s)

Patent OwnerAddress
MICROSOFT TECHNOLOGY LICENSING LLCONE MICROSOFT WAY REDMOND WA 98052

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dubhashi, Kedarnath A Redmond, US 26 590
Paka, Anand D San Francisco, US 8 109
Sie, Yu Lin Bellevue, US 7 186

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