The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 1997
Filed:
Nov. 14, 1995
Applicant:
Inventors:
Jeffrey F Spelman, Duvall, WA (US);
Matthew W Thomlinson, Bellvue, WA (US);
Assignee:
Microsoft Corporation, Redmond, WA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380 21 ; 380 30 ;
Abstract
A method of recovering from a compromise of a root key which is the private key of a first public key-private key pair, the method including the steps of electronically sending out an emergency message indicating that the root key has been compromised and also containing a replacement key and a digital signature which was generated by using the root key; and publishing in an out-of-band channel a value V, wherein V is derived from the emergency message.