4. A non-transitory computer readable medium that stores instructions for: receiving, by a first computerized entity and over a communication network, encrypted text that comprises multiple random tokens and a plurality of plaintext symbols; wherein the multiple random tokens are generated by a second computerized entity; wherein a value of each random token that represents a plaintext symbol is responsive to values of random tokens that represents plaintext symbols that have a lower lexicographic value than the plaintext symbol; and processing the encrypted text by the first computerized entity, wherein the processing is selected from a group consisting of sorting and searching.
4. A non-transitory computer readable medium that stores instructions for: receiving, by a first computerized entity and over a communication network, encrypted text that comprises multiple random tokens and a plurality of plaintext symbols; wherein the multiple random tokens are generated by a second computerized entity; wherein a value of each random token that represents a plaintext symbol is responsive to values of random tokens that represents plaintext symbols that have a lower lexicographic value than the plaintext symbol; and processing the encrypted text by the first computerized entity, wherein the processing is selected from a group consisting of sorting and searching. 6. The non-transitory computer readable medium according to claim 4 wherein the first computerized entity supports a data base application.