Achieving data base protection through the use of subkey encryption
David L. Wells · 1980
The difficulties of protecting data stored in a general purpose data base are discussed. Encrypting the data solves many of the problems left by traditional security mechanisms, but traditional encryption schemes fail to satisfy some of the peculiar requirements of data bases. The concept of a block cipher with subkeys is introduced, and a subkey encryption algorithm based on the Chinese Remainder Theorem is presented.