Source: http://www.google.ca/patents/US8763079
Timestamp: 2017-12-14 19:07:48
Document Index: 756254145

Matched Legal Cases: ['Application No. 07', 'Application No. 10194370', 'Application No. 07', 'Application No. 09', 'Application No. 200780024247', 'Application No. 202005021674', 'Application No. 2010', 'Application No. 2010', 'Application No. 2011', 'Application No. 10', 'Application No. 10194377', 'Application No. 200910222182']

Patent US8763079 - Accessory authentication for electronic devices - Google Patents
Improved techniques to control utilization of accessory devices with electronic devices are disclosed. The improved techniques can use cryptographic approaches to authenticate electronic devices, namely, electronic devices that interconnect and communicate with one another. One aspect pertains to techniques...http://www.google.ca/patents/US8763079?utm_source=gb-gplus-sharePatent US8763079 - Accessory authentication for electronic devices
Publication number US8763079 B2
Also published as CA2591164A1, CA2591164C, CN101099157A, CN101099157B, CN101699458A, CN101699458B, DE202005021674U1, EP1834273A1, EP1834273B1, US7823214, US8161567, US9223958, US9754099, US20060156415, US20090083834, US20110061113, US20150082049, US20160110536, WO2006073702A1
Publication number 12328368, 328368, US 8763079 B2, US 8763079B2, US-B2-8763079, US8763079 B2, US8763079B2
Patent Citations (446), Non-Patent Citations (34), Referenced by (5), Classifications (10)
US 8763079 B2
a network interface configured to communicate with an accessory in conjunction with the processor,
receive authentication control information from the accessory;
in response to receiving the authentication control information determine whether the accessory supports authentication based on the authentication control information, and if the accessory does not support authentication, then authorizing a restricted set of features, otherwise the processor is further configured to;
send a request to the accessory requesting accessory authentication information;
receive the accessory authentication information from the accessory;
send an authentication request to the accessory, the authentication request including a random number;
receive an authentication response from the accessory, the authentication response including an accessory digital signature and an accessory identifier;
extract the accessory digital signature from the authentication response;
obtain a public key associated with the accessory based on the accessory identifier;
validate the accessory digital signature using the public key; and
authenticate the accessory based on the validation.
2. The media player of claim 1 wherein the processor is further configured to determine whether authentication is to be performed based on the accessory authentication information.
3. The media player of claim 1 wherein the public key is stored in the storage device.
4. The media player of claim 1 wherein the processor is further configured to authorize usage of one or more authorized features of the media player with the accessory.
5. The media player of claim 4 wherein at least one of the one or more authorized features is authorized for usage over only a certain interface mechanism.
receiving, by a host device, authentication control information from an accessory;
resetting, by the host device, an authentication status for the host device corresponding to the accessory;
sending, by the host device, host authentication information to the accessory, wherein the host authentication information includes version information and a public key index;
receiving, by the host device, an authentication request from the accessory, the authentication request including an accessory random number and a private key number;
extracting, by the host device, the accessory random number and the private key number;
obtaining, by the host device, a private key based on the private key number;
generating, by the host device, a host digital signature using the accessory random number, the private key, and a host random number;
sending, by the host device, an authentication response to the accessory including the host digital signature;
receiving, by the host device, a new authentication status from the accessory; and
storing, by the host device, the new authentication status.
7. The method of claim 6 wherein the private key is obtained from a storage device internal to the host device.
8. The method of claim 6 wherein the host random number is provided to the host device.
This application is a divisional of U.S. patent application Ser. No. 11/051,499, filed Feb. 3, 2005, entitled “ACCESSORY AUTHENTICATION FOR ELECTRONIC DEVICES,” which claims the benefit of U.S. Provisional Patent Application No.: 60/642,340, filed Jan. 7, 2005, entitled “ACCESSORY AUTHENTICATION FOR ELECTRONIC DEVICES,” which is hereby incorporated herein by reference;
This application is also related to: (i) U.S. patent application Ser. No. 11/051,441, filed Feb. 3, 2005, entitled “SMALL MEMORY FOOTPRINT FAST ELLIPTIC ENCRYPTION,” which is hereby incorporated herein by reference; (ii) U.S. Provisional Patent Application No.: 60/642,276, filed Jan. 7, 2005, entitled “PORTABLE MEDIA DEVICE AND IMPROVED PLAYLIST PROCESSING ON MEDIA DEVICES,” which is hereby incorporated herein by reference; (iii) U.S. Provisional Patent Application No.: 60/642,334, filed Jan. 7, 2005, entitled “MEDIA MANAGEMENT FOR GROUPS OF MEDIA ITEMS,” which is hereby incorporated herein by reference; (iv) U.S. patent application Ser. No. 11/031,547, filed Jan. 7, 2005, entitled “PORTABLE POWER SOURCE TO PROVIDE POWER TO AN ELECTRONIC DEVICE VIA AN INTERFACE,” which is hereby incorporated herein by reference; (v) U.S. patent application Ser. No. 11/031,288, filed Jan. 7, 2005, entitled “METHOD AND SYSTEM FOR DISCOVERING A POWER SOURCE ON A PERIPHERAL BUS,” which is hereby incorporated herein by reference; (vi) U.S. patent application Ser. No. 29/220,463, filed Jan. 7, 2005, entitled “CONNECTOR SYSTEM,” which is hereby incorporated herein by reference; (vii) U.S. patent application Ser. No. 29/220,892, filed Jan. 7, 2005, entitled “CONNECTOR INTERFACE SYSTEM FOR MULTI-COMMUNICATION DEVICE,” which is hereby incorporated herein by reference.
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WO2016182554A1 * 11 May 2015 17 Nov 2016 Hewlett Packard Enterprise Development Lp Peripheral device security
U.S. Classification 726/2, 726/27, 726/34, 726/17