公开(公告)号：US5235641A

公开(公告)日：1993-08-10

申请号：US668098

申请日：1991-03-12

申请人： Masafumi Nozawa ,  Akinobu Shimada ,  Toshifumi Nishimura ,  Katsuharu Kakuse ,  Tokuhiro Tsukiyama ,  Kiyoshi Yata ,  Yasuhiro Ishii ,  Kazuo Takaragi ,  Yasushi Kuba ,  Fujio Fujita

发明人： Masafumi Nozawa ,  Akinobu Shimada ,  Toshifumi Nishimura ,  Katsuharu Kakuse ,  Tokuhiro Tsukiyama ,  Kiyoshi Yata ,  Yasuhiro Ishii ,  Kazuo Takaragi ,  Yasushi Kuba ,  Fujio Fujita

IPC分类号： G06F12/00 ,  G06F1/00 ,  G06F21/00 ,  G09C1/00

CPC分类号： G06F21/6209 ,  G06F2221/2107

摘要： In an information processing system having an upper rank apparatus and an external storage device which performs transmission and reception of data between the storage device and the upper rank apparatus, at least one of encryption and decryption of the data by use of an algorithm controlled by a desired data key is performed in the external storage device, while generation, encryption and decryption of the data key are performed on the upper rank apparatus side. By this configuration, the burden of the upper rank apparatus is largely reduced and the secrecy of data stored in the external storage device can be surely kept without spoiling the throughput of the whole system.

摘要翻译： 在具有上位装置和外部存储装置的信息处理系统中，在存储装置和上位装置之间执行数据的发送和接收，通过使用由 在外部存储装置中执行期望的数据密钥，而在上位装置侧执行数据密钥的生成，加密和解密。 通过这种配置，大大减少了上位装置的负担，并且可以可靠地保持存储在外部存储装置中的数据的保密性，而不会破坏整个系统的吞吐量。