SECURE KEY MANAGEMENT IN MULTIMEDIA COMMUNICATION SYSTEM

    公开(公告)号:EP2471212B1

    公开(公告)日:2018-07-18

    申请号:EP10748194.7

    申请日:2010-08-23

    申请人: Alcatel Lucent

    IPC分类号: H04L9/08 H04L9/30 H04L29/06

    摘要: Principles of the invention provide one or more secure key management protocols for use in communication environments such as a media plane of a multimedia communication system. For example, a method for performing an authenticated key agreement protocol, in accordance with a multimedia communication system, between a first party and a second party comprises, at the first party, the following steps. Note that encryption/decryption is performed in accordance with an identity based encryption operation. At least one private key for the first party is obtained from a key service. A first message comprising an encrypted first random key component is sent from the first party to the second party, the first random key component having been computed at the first party, and the first message having been encrypted using a public key of the second party. A second message comprising an encrypted random key component pair is received at the first party from the second party, the random key component pair having been formed from the first random key component and a second random key component computed at the second party, and the second message having been encrypted at the second party using a public key of the first party. The second message is decrypted by the first party using the private key obtained by the first party from the key service to obtain the second random key component. A third message comprising the second random key component is sent from the first party to the second party, the third message having been encrypted using the public key of the second party. The first party computes a secure key based on the second random key component, the secure key being used for conducting at least one call session with the second party via a media plane of the multimedia communication system.

    COMMUNICATION APPARATUS, CONTROL METHOD THEREOF, AND STORAGE MEDIUM

    公开(公告)号:EP3346634A1

    公开(公告)日:2018-07-11

    申请号:EP18154337.2

    申请日:2008-12-02

    发明人: GOTO, Fumihide

    摘要: A first communication apparatus that functions as a providing apparatus that provides an encryption key or as a receiving apparatus that receives an encryption key provided by a providing apparatus, and that performs a key sharing process for sharing an encryption key with another apparatus, confirms whether or not the first communication apparatus functioned as the providing apparatus in the key sharing process performed among a plurality of apparatuses present on a network in which the first communication apparatus is joining; compares identification information of a second communication apparatus that has newly joined the network with identification information of the first communication apparatus; and determines whether or not the first communication apparatus is to function as a providing apparatus in the key sharing process performed between the first and the second communication apparatuses based on the result of the confirmation and the comparison.

    TECHNOLOGIES FOR TRUSTED DEVICE ON-BOARDING
    8.
    发明公开

    公开(公告)号:EP3219044A4

    公开(公告)日:2018-06-27

    申请号:EP15858445

    申请日:2015-10-06

    申请人: INTEL CORP

    IPC分类号: H04L9/08

    摘要: Technologies for trusted device on-boarding include a first computing device to generate a first public Diffie-Hellman key based on a private Diffie-Hellman key and a first unique identifier of the first computing device. The first unique identifier is retrieved from secure memory of the first computing device. The first computing device transmits the first public Diffie-Hellman key to a second computing device and receives, from the second computing device, a second public Diffie-Hellman key of the second computing device. The second public Diffie-Hellman key incorporates a second unique identifier of the second computing device. Further, the first computing device removes a contribution of the second unique identifier from the second public Diffie-Hellman key to generate a modified public Diffie-Hellman key and generates a shared Diffie-Hellman key based on the modified public Diffie-Hellman key and the private Diffie-Hellman key of the first computing device.