公开(公告)号：FR2811180B1

公开(公告)日：2007-08-31

申请号：FR0104882

申请日：2001-04-10

Applicant: IBM

Inventor： LE PENNEC JEAN FRANCOIS ,  FIESCHI JACQUES ,  MICHEL PATRICK ,  BENAYOUN ALAIN

IPC: H04L49/111

Abstract: Data transmission system for transmitting packets of data from a source workstation ( 10 ) to a destination workstation ( 18 ) wherein the packets of data are transmitted over at least an IP network ( 14 ) between an ingress node ( 16 ) connected to the source workstation and an egress node ( 20 ) connected to the destination workstation, wherein each router within the intermediary nodes along the data path from the ingress node to the egress node determines the best route in a routing table defined by the contents of a field contained in each packet of data being received. For this, the router of the ingress node comprises a configuration table which defines the contents of the TOS field in function of information associated with the 4/5 level protocol such as TCP or UDP.

公开(公告)号：DE60034009D1

公开(公告)日：2007-05-03

申请号：DE60034009

申请日：2000-09-28

Applicant: IBM

Inventor： BENAYOUN ALAIN ,  LE PENNEC JEAN FRANCOIS ,  MICHEL PATRICK

IPC: H04L9/08

Abstract: The invention discloses a method of updating, in nodes on both ends of a secure link, the encryption key they share to encrypt and decrypt data. When having to transmit data from one of the nodes towards its peer remote node, a data base in the forwarding node, is first updated from the data to be transmitted. Then, encryption is performed and data transmitted to the peer remote node while a next-to-use encryption key is derived from the new contents of the data base. When received, data are decrypted with the current value of the encryption key and the peer remote node data base is updated identically from the received decrypted data after which a next-to-use encryption key is derived, thereby obtaining in the peer remote node, a next-to-use identical key. The data base is preferably the dictionary of a data compression/decompression system used simultaneously with encryption/decryption to transmit data over the secure link. While keys are frequently updated, for improved security, the invention does not require that key updates need to be actually distributed.

公开(公告)号：FR2794259A1

公开(公告)日：2000-12-01

申请号：FR0006085

申请日：2000-05-12

Applicant: IBM

Inventor： BENAYOUN ALAIN ,  MICHEL PATRICK ,  LE PENNEC JEAN FRANCOIS ,  PIN CLAUDE

IPC: G06F9/38 ,  G06F9/00 ,  G06F9/22 ,  G06F9/30 ,  G06F9/318 ,  G06F9/28

Abstract: Only one of activation blocks (22-30) associated with the corresponding selected decision block is activated to execute specific micro-instructions. A micro-instructions selection block (46) controls each activation blocks destine for selecting specific micro-instructions among a set of micro-instructions resulting from a content of an operand field of a given instruction.