Title:
ストレージシステム及び暗号処理方法
Document Type and Number:
Japanese Patent JP6964696
Kind Code:
B2
Abstract:
Encryption is enabled at a low load in a storage system. An encryption processing device 20 uses, as an expectation value for key validation, a value that is uniquely identified from a storage location address of encrypted text data in a storage drive. The encryption processing device 20 encrypts the expectation value and plain text data, respectively, using a same encryption key, substitutes a DIF according to the encrypted text data obtained by encrypting the plain text data, and stores the encrypted expectation value in the substituted DIF. Upon receiving a read request of the encrypted text data, the encryption processing device 20 decrypts the encrypted expectation value stored in the substituted DIF using a decryption key, and validates whether the encryption key and the decryption key are properly corresponding by comparing the decrypted expectation value and the expectation value identified from the address at the time of reading.
Inventors:
Hideaki Moji
Kiyota Yusaku
Kiyota Yusaku
Application Number:
JP2020027615A
Publication Date:
November 10, 2021
Filing Date:
February 20, 2020
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04L9/08; G06F3/06; G06F21/78
Domestic Patent References:
| JP2012177964A | ||||
| JP2010171806A | ||||
| JP2010147572A |
Foreign References:
| US20190012230 |
Attorney, Agent or Firm:
Patent Business Corporation Sunnext International Patent Office