Method for authenticated encryption and decryption

Patent metadata

Field	Value
Publication number	US-9225708-B2
Application number	US-201414323845-A
Country	US
Kind code	B2
Filing date	Jul 3, 2014
Priority date	Jul 4, 2013
Publication date	Dec 29, 2015
Grant date	Dec 29, 2015

Abstract

In this invention, a new authenticated encryption and decryption technique has been proposed. In general, conventional encryption modes like (CTR, CBC, and CFB etc.) cannot provide integrity support and in order to ensure both the privacy and integrity, they require two passes and additional support like MAC, CRC etc. However, this new authenticated encryption technique can ensure both the privacy and integrity in single pass without any MAC or CRC support. Most importantly, this new technique can easy be incorporated with the existing encryption modes. As a consequence of the integration, the existing encryption modes can resolve several security issues related to integrity, without impairing their existing security properties.

First claim

What is claimed is:

1. A method for authenticated encryption and decryption, comprising:
receiving a binary plain text at an encryption end;
performing an encryption process according to the binary plain text data, the encryption process comprising following steps:
providing n encryption paths, wherein n is a positive integer;
providing a first input encryption parameter A t to the t-th path of the n encryption paths correspondingly, wherein t is an integer, 1≦t≦n, 0≦r<t, r…

Assignees

• Univ Nat Cheng Kung

Inventors

• Hwang Tzonelih

Classifications

• G09C1/00

  Physics · mapped topic

• H04L9/0637

  Electricity · mapped topic

• H04L63/08 Primary

  Electricity · mapped topic

• H04L63/0428

  Electricity · mapped topic