Patent ID: 7929704
Filing Date: 2011-04-19
Classification: G06F,H04L,H04N

Abstract:
1. A triple wrap encryption method for encrypting input data having first, second, third, and fourth input data portions as an encrypted message comprising: processing the first input data portion by a first operator according to a first key to produce a first operator output; encrypting a combination of the first operator output and the second input data portion according to a second key to produce first and second encrypted data; processing the first encrypted data by a second operator according to a third key to produce a second operator output; encrypting a combination of the second operator output and the third input data portion according to a fourth key to produce third and fourth encrypted data; processing the third encrypted data by a third operator according to a fifth key to produce a third operator output; encrypting a combination of the third operator output and the fourth input data portion according to a sixth key to produce fifth and sixth encrypted data, wherein the first, third, and fifth keys are shorter that the second, fourth, and sixth keys; and, forming the fifth, second, fourth, and sixth encrypted data as the encrypted message.