| 发明名称 |
COMMUNICATION APPARATUS, METHOD FOR CONTROLLING COMMUNICATION APPARATUS, AND PROGRAM |
| 摘要 |
A communication apparatus includes a storage unit, an updating unit, a determination unit, and a deletion unit. The storage unit stores, in a storage, a first key used to decrypt or authenticate a packet to be communicated between the communication apparatus and a second communication apparatus. The updating unit updates the first key to a second key different from the first key when an expiration date of the first key has passed. The determination unit determines that a packet to be decrypted or authenticated using the second key has been received from the second communication apparatus. The deletion unit deletes the first key from the storage unit in response to the determination unit determining that the packet to be decrypted or authenticated using the second key has been received from the second communication apparatus. |
| 申请公布号 |
US2014208115(A1) |
申请公布日期 |
2014.07.24 |
| 申请号 |
US201414158596 |
申请日期 |
2014.01.17 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Fukada Masanori |
| 分类号 |
H04L9/08;H04L9/32 |
主分类号 |
H04L9/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A communication apparatus comprising:
a storage unit configured to store, in a storage, a first key used to decrypt or authenticate a packet to be communicated between the communication apparatus and a second communication apparatus; an updating unit configured to update the first key to a second key different from the first key when an expiration date of the first key has passed; a determination unit configured to determine that a packet to be decrypted or authenticated using the second key has been received from the second communication apparatus; and a deletion unit configured to delete the first key from the storage unit in response to the determination unit determining that the packet to be decrypted or authenticated using the second key has been received from the second communication apparatus. |
| 地址 |
TOKYO JP |
