发明授权
US07720227B2 Encryption method for SIP message and encrypted SIP communication system
有权
SIP消息和加密SIP通信系统的加密方法
- 专利标题: Encryption method for SIP message and encrypted SIP communication system
- 专利标题(中): SIP消息和加密SIP通信系统的加密方法
-
申请号: US11390459申请日: 2006-03-28
-
公开(公告)号: US07720227B2公开(公告)日: 2010-05-18
- 发明人: Tadashi Kaji , Osamu Takata , Takahiro Fujishiro , Kazuyoshi Hoshino
- 申请人: Tadashi Kaji , Osamu Takata , Takahiro Fujishiro , Kazuyoshi Hoshino
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2005-090464 20050328
- 主分类号: H04L9/00
- IPC分类号: H04L9/00 ; H04L9/08 ; H04L9/32 ; H04K1/00
摘要:
It takes time for an encryption data communication system to transfer encrypted data, because negotiations of security parameters are necessary prior to communications in order to protect security and integrity of a SIP message or public key cryptography is required to be used for an encryption process, a decryption process., an digital signature process and an digital digital signature verification process each time a SIP message is transmitted/received. When a SIP message is transferred between two entities, the message is encrypted by shared information if the information is being shared between the entities, or the message is encrypted by the public key of the transmission destination entity if the shared information is not being shared. The encrypted message contains shared information to be used for the transmission destination entity of the encrypted data to encrypt or decrypt the message, during communications after the encrypted data is generated.