... an index based on sensitiveattribute values. In the first, the index is based upon ciphertext, while, in thesecond, the intermediate index is based upon plaintext and the final index isobtained ... ciphers involve creating a key-stream based on a fixed key (and, optionally, counter, previous ciphertext, or previous plaintext) and combiningit with the plaintext in some way (e.g, by xor-ing ... 3. Varying the number of encrypted attributes in TPC-H Query 1.indicates that attributes in lineitem were encrypted with of them appearing in thequerycomputed the running time for NSM and NSM-page,...