Block encryption method and schemes for data confidentiality and integrity protection

a technology of integrity protection and block encryption, applied in the field of secure data communication, can solve the problems of reducing performance or requiring additional power, prior-art block encryption schemes are less suitable for use in high-performance, low-power applications, and cannot be used in most real-time applications for embedded systems. the effect of low cos

a technology of integrity protection and block encryption, applied in the field of secure data communication, can solve the problems of reducing performance or requiring additional power, prior-art block encryption schemes are less suitable for use in high-performance, low-power applications, and cannot be used in most real-time applications for embedded systems. the effect of low cos

US20060056623A1Inactive Publication Date: 2006-03-16VDG
6 Cites 109 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Block encryption method and schemes for data confidentiality and integrity protection
  • Block encryption method and schemes for data confidentiality and integrity protection
  • Block encryption method and schemes for data confidentiality and integrity protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0099] Referring to FIG. 1, a plaintext string x 23 representing the input data is presented to the encryption scheme providing data confidentiality and integrity 50 resulting in an output ciphertext string y 24. It is assumed that the sender and the receiver share a pair of secret keys K and K′ (i.e., a first key K 31, and a second key K′32) and that a random-number generator 73 is available. Keys K and K′ have the same length k and can be derived from a master key using key separation techniques well-known in the art. The input plaintext string x 23 is padded in some standard fashion so that it is a multiple of l bits. The padding is not shown in FIG. 1, as it is commonly known in the data processing art. It is assumed that the plaintext string x 23 is composed of n l-bit plaintext blocks 21. FIG. 1 shows an example plaintext string 23 composed of n=4 blocks, x=x1 x2 x3 x4.

[0100] In the description to follow, F is an l-bit block cipher with key length k, FK 70 is the l-bit block ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A block encryption method and schemes (modes of operation) that provide both data confidentiality and integrity with a single cryptographic primitive and a single processing pass over the input plaintext string by using a non-cryptographic Manipulation Detection Code function for secure data communication over insecure channels and for secure data storage on insecure media. The present invention allows, in a further aspect, software and hardware implementations, and use in high-performance and low-power applications, and low-power, low-cost hardware devices. The block encryption method and schemes of this invention allow, in yet a further aspect, encryption and decryption in parallel or pipelined manners in addition to sequential operation. In a yet further aspect, the block encryption method and schemes of this invention are suitable for real-time applications.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) [0001] This application is a Continuation of U.S. Ser. No. 09 / 761,771, filed on Jan. 18, 2001, which claims priority from U.S. provisional patent application Ser. No. 60 / 179,147, filed Jan. 31, 2000. The entire contents of each of the aforementioned applications are incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention relates to the technical field of secure data communication over insecure channels and secure data storage on insecure media using data encryption techniques. Specifically, the invention relates to encryption methods, program products and systems that achieve both data confidentiality and integrity in a single pass over the data with a single cryptographic primitive and allow encryption and decryption in sequential, parallel or pipelined manners. BACKGROUND OF THE INVENTION [0003] It is generally accepted that whenever two or more parties want to communicate over an insecure channel, encryption w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
16 Mar 2006
Publication
US20060056623A1
IPC
H04L9/28; H04L9/00; H04K1/00; H04L9/06; H04L9/32
CPC
H04L9/0637; H04L9/0643; H04L9/0656; H04L2209/20; H04L2209/08; H04L2209/125; H04L9/3242
Inventors
GLIGOR, VIRGIL DORIN; DONESCU, POMPILIU