System, apparatus and method for encryption and decryption of data transmitted over a network

摘要

A method and system for securing data transmitted between a client device and a server by obtaining input text at an intermediate module, processing the input text to obtain processed text, deciding whether to transform the input text deterministically or non-deterministically, or a combination of deterministically and non-deterministically, and based on that decision, transforming the input text accordingly, using at least one key to obtain processed text, and transmitting the processed text to the server. Other embodiments and features of the invention include (independently or together) searching for processed text, allowing for sorting of processed text records by applying an order-preserving transformation, storing unabridged processed elements in a storage device managed by the intermediate module, providing a function by the intermediate module on the input data in lieu of the server, and processing the processed text so as to determine by the intermediate module a transformation applied by the server on input text.

主权项

1. A method for securing data transmitted between a client device and a server comprising:
obtaining, by an intermediate module, input text sent from said client device to the server; processing said input text at the intermediate module to obtain processed text, wherein said processing comprises:
when the input text is not to be searchable by the server, transforming the input text non-deterministically or a combination of deterministically and non-deterministically, using at least one key to obtain processed text; andwhen the input text is to be searchable by the server, transforming said input text deterministically, using at least one key to obtain processed text, and including a statistically significant feature in the processed text, the feature including a rarely used character or group of characters; and transmitting the processed text to the server.