公开(公告)号：DE69312328T2

公开(公告)日：1998-01-08

申请号：DE69312328

申请日：1993-09-20

Applicant: IBM

Inventor： HAUSER RALF ,  JANSON PHILIPPE ,  MOLVA REFIK ,  TSUDIK GENE ,  VAN HERREWEGHEN ELSIE

IPC: G06F21/20 ,  G06F1/00 ,  G06F15/00 ,  G09C1/00 ,  H04L9/08 ,  H04L9/32

Abstract: A robust and secure password (or key) change method between a user and an authentication server in a distributed communication network is disclosed. The protocol requires the exchange of only two messages between the user desiring the key change and the server, the user's request including, at least partly encrypted, an identification of the sending user, old and new keys, and two nonces, at least one including a time indication. The authentication server's response includes a possibly encrypted accept/reject indication and the regularly encrypted request from the user.

公开(公告)号：DE602004006863T2

公开(公告)日：2008-02-14

申请号：DE602004006863

申请日：2004-04-28

Applicant: IBM

Inventor： VAN HERREWEGHEN ELSIE ,  ROONEY JOHN G

IPC: H04L12/56 ,  H04L29/06

Abstract: The present invention relates to a method for transmitting media data, especially voice data, via a network (7), wherein the media data are converted to a media data packet stream. The network has a number of data paths (P1, P2, P3) including a first and a second data path each capable of transmitting data packets of the media data packet stream. The data packet stream is transmitted via the first data path of the network, thereby the media data packet stream is stopped to be transmitted via the first data path and is started to be transmitted via the second data path when an information pause is detected.

公开(公告)号：DE602004006863D1

公开(公告)日：2007-07-19

申请号：DE602004006863

申请日：2004-04-28

Applicant: IBM

Inventor： VAN HERREWEGHEN ELSIE ,  ROONEY JOHN G

IPC: H04L12/56 ,  H04L29/06

Abstract: The present invention relates to a method for transmitting media data, especially voice data, via a network (7), wherein the media data are converted to a media data packet stream. The network has a number of data paths (P1, P2, P3) including a first and a second data path each capable of transmitting data packets of the media data packet stream. The data packet stream is transmitted via the first data path of the network, thereby the media data packet stream is stopped to be transmitted via the first data path and is started to be transmitted via the second data path when an information pause is detected.

公开(公告)号：AT364280T

公开(公告)日：2007-06-15

申请号：AT04729949

申请日：2004-04-28

Applicant: IBM

Inventor： VAN HERREWEGHEN ELSIE ,  ROONEY JOHN

IPC: H04L12/56 ,  H04L29/06

Abstract: The present invention relates to a method for transmitting media data, especially voice data, via a network (7), wherein the media data are converted to a media data packet stream. The network has a number of data paths (P1, P2, P3) including a first and a second data path each capable of transmitting data packets of the media data packet stream. The data packet stream is transmitted via the first data path of the network, thereby the media data packet stream is stopped to be transmitted via the first data path and is started to be transmitted via the second data path when an information pause is detected.

公开(公告)号：DE69312328D1

公开(公告)日：1997-08-21

申请号：DE69312328

申请日：1993-09-20

Applicant: IBM

Inventor： HAUSER RALF ,  JANSON PHILIPPE ,  MOLVA REFIK ,  TSUDIK GENE ,  VAN HERREWEGHEN ELSIE

IPC: G06F21/20 ,  G06F1/00 ,  G06F15/00 ,  G09C1/00 ,  H04L9/08 ,  H04L9/32

Abstract: A robust and secure password (or key) change method between a user and an authentication server in a distributed communication network is disclosed. The protocol requires the exchange of only two messages between the user desiring the key change and the server, the user's request including, at least partly encrypted, an identification of the sending user, old and new keys, and two nonces, at least one including a time indication. The authentication server's response includes a possibly encrypted accept/reject indication and the regularly encrypted request from the user.