✦ LIBER ✦

Multilevel secure database encryption with subkeys

✍ Scribed by Min-Shiang Hwang; Wei-Pang Yang

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 824 KB
Volume: 22
Category: Article
ISSN: 0169-023X
DOI: 10.1016/s0169-023x(96)00040-7

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✦ Synopsis

In this paper, we propose a multilevel database encryption system with subkeys. This new system is called the record-oriented cryptosystem which encrypts each record with different field-subkeys according to a security class of the data element. Each field is decrypted individually by the field-subkeys of which security class is higher than or equal to that of the encrypted field-subkeys. This system is based on the Chinese Remainder Theorem. Our scheme can protect the finest level of granularity such as relation level, attribute level, tuple level, or data element level in the relational database model.

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