| Title of Invention | METHOD AND APPARATUS FOR USING CONSTRAINED CRYPTOGRAPHIC KEYS TO ENABLE SECURE COMMUNICATION BETWEEN DEVICES |
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| Abstract | A constrained proxy key is used to secure communications between two devices via an intermediary device. A first proxy key is generated at a host device (key generator device) based on a shared secret key, one or more constraints on the first proxy key, and a key derivation function. At least the shared secret key and key derivation function are known to the host device and a client device (authentication device). The first proxy key is sent to a proxy device to use in authenticating communications with the client device. An authenticated message is generated by the proxy device using the first proxy key and sent to the client device. The client device locally generates a second proxy key using the key derivation function, one or more constraints, and the shared secrete key for authenticating the proxy device. The proxy device is authenticated if the client device successfully accesses the authenticated message from the proxy device using the second proxy key. |
| Full Text | Various embodiments pertain to secure communications and, in particular, to constrained cryptographic keys that enable secure communications between two parties via a proxy device. Currently, secured communications between two parties is often accomplished by use of a shared secret. This shared secret allows the two parties to keep the content of their communications (e.g., data packets, messages, etc.) ................. |
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681-mumnp-2008-abstract(9-4-2008).pdf
681-MUMNP-2008-CERTIFIED COPY OF US ASSIGNMENT 7-7-2008.pdf
681-mumnp-2008-claims(9-4-2008).pdf
681-MUMNP-2008-CLAIMS(AMENDED)-(1-9-2014).pdf
681-MUMNP-2008-CLAIMS(AMENDED)-(29-3-2012).pdf
681-MUMNP-2008-CLAIMS(AMENDED)-(6-12-2012).pdf
681-MUMNP-2008-CLAIMS(MARKED COPY)-(1-9-2014).pdf
681-MUMNP-2008-CLAIMS(MARKED COPY)-(29-3-2012).pdf
681-MUMNP-2008-CLAIMS(MARKED COPY)-(6-12-2012).pdf
681-MUMNP-2008-CORRESPONDENCE 7-7-2008.pdf
681-mumnp-2008-correspondence(14-7-2008).pdf
681-MUMNP-2008-CORRESPONDENCE(2-7-2012).pdf
681-MUMNP-2008-CORRESPONDENCE(23-10-2008).pdf
681-MUMNP-2008-CORRESPONDENCE(4-7-2014).pdf
681-MUMNP-2008-CORRESPONDENCE(6-12-2012).pdf
681-MUMNP-2008-CORRESPONDENE(14-07-2008).pdf
681-mumnp-2008-description(complete)-(9-4-2008).pdf
681-MUMNP-2008-DRAWING(29-3-2012).pdf
681-MUMNP-2008-DRAWING(6-12-2012).pdf
681-mumnp-2008-drawing(9-4-2008).pdf
681-MUMNP-2008-FORM 1(29-3-2012).pdf
681-MUMNP-2008-FORM 1(6-12-2012).pdf
681-mumnp-2008-form 1(9-4-2008).pdf
681-MUMNP-2008-FORM 13(COPY)-(6-12-2012).pdf
681-mumnp-2008-form 18(10-4-2008).pdf
681-mumnp-2008-form 2(9-4-2008).pdf
681-mumnp-2008-form 2(title page)-(9-4-2008).pdf
681-MUMNP-2008-FORM 26(29-3-2012).pdf
681-MUMNP-2008-FORM 26(4-7-2014).pdf
681-MUMNP-2008-FORM 26(6-12-2012).pdf
681-mumnp-2008-form 26(9-4-2008).pdf
681-MUMNP-2008-FORM 3 7-7-2008.pdf
681-MUMNP-2008-FORM 3(14-07-2008).pdf
681-mumnp-2008-form 3(14-7-2008).pdf
681-MUMNP-2008-FORM 3(2-7-2012).pdf
681-MUMNP-2008-FORM 3(23-10-2008).pdf
681-mumnp-2008-form 3(7-7-2008).pdf
681-mumnp-2008-form 3(9-4-2008).pdf
681-mumnp-2008-form 5(9-4-2008).pdf
681-MUMNP-2008-REPLY TO EXAMINATION REPORT(29-3-2012).pdf
681-MUMNP-2008-REPLY TO EXAMINATION REPORT(6-12-2012).pdf
681-MUMNP-2008-REPLY TO HEARING(1-9-2014).pdf
81-MUMNP-2008-CLAIMS(AMENDED)-(29-3-2012).pdf
| Patent Number | 263374 | ||||||||||||||||
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| Indian Patent Application Number | 681/MUMNP/2008 | ||||||||||||||||
| PG Journal Number | 44/2014 | ||||||||||||||||
| Publication Date | 31-Oct-2014 | ||||||||||||||||
| Grant Date | 24-Oct-2014 | ||||||||||||||||
| Date of Filing | 09-Apr-2008 | ||||||||||||||||
| Name of Patentee | QUALCOMM INCORPORATED | ||||||||||||||||
| Applicant Address | 5775 MOREHOUSE DRIVE, SAN DIEGO, CALIFORNIA 92121-1714, | ||||||||||||||||
Inventors:
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| PCT International Classification Number | H04L9/08 | ||||||||||||||||
| PCT International Application Number | PCT/US2006/038110 | ||||||||||||||||
| PCT International Filing date | 2006-09-29 | ||||||||||||||||
PCT Conventions:
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