From the Publisher:
A valuable reference for the novice as well as for the expert who needs a wider scope of coverage within the area of cryptography, this book provides easy and rapid access of information and includes more than 200 algorithms and protocols; more than 200 tables and figures; more than 1,000 numbered definitions, facts, examples, notes, and remarks; and over 1,250 significant references, including brief comments on each paper.

Handbook of Applied Cryptography

Cryptosystem designers frequently assume that secrets will be manipulated in closed, reliable computing environments. Unfortunately, actual computers and microchips leak information about the operations they process. This paper examines specific methods for analyzing power consumption measurements to find secret keys from tamper resistant devices. We also discuss approaches for building cryptosystems that can operate securely in existing hardware that leaks information.

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Differential Power Analysis

One way hash functions are a major tool in cryptography. DES is the best known and most widely used encryption function in the commercial world today. Generating a one-way hash function which is secure if DES is a "good" block cipher would therefore be useful. We show three such functions which are secure if DES is a good random block cipher.

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One way hash functions and DES

Block ciphers encrypt blocks of plaintext, messages, into blocks of ciphertext under the action of a secret key, and the process of encryption is reversed by decryption which uses the same user-supplied key. Block ciphers are fundamental to modern cryptography, in fact they are the most widely used cryptographic primitive useful in their own right, and in the construction of other cryptographic mechanisms. In this book the authors provide a technically detailed, yet readable, account of the state of the art of block cipher analysis, design, and deployment. The authors first describe the most prominent block ciphers and give insights into their design. They then consider the role of the cryptanalyst, the adversary, and provide an overview of some of the most important cryptanalytic methods. The book will be of value to graduate and senior undergraduate students of cryptography and to professionals engaged in cryptographic design. An important feature of the presentation is the authors' exhaustive bibliography of the field, each chapter closing with comprehensive supporting notes.

The Block Cipher Companion

Cryptosystems are tested by subjecting them to cryptanalytic attacks by experts. Most of the cryptosystems that have been publicly proposed in the last decade have been broken. Some of the attacks that have been used are outlined, and some of the basic tools available to the cryptanalyst are explained. Attacks on the knapsack cryptosystems, congruential generators, and a variety of two key secrecy and signature schemes are discussed. There is also a brief discussion of the status of the security of cryptosystems for which there is no known feasible attack, such as the RSA, discrete exponentiation, and DES cryptosystems. >

Cryptanalysis: a survey of recent results

The Output Feedback (OFB) mode of operation of the Data Encryption Standard (DES) is discussed, and compared to the other DES modes. The advantages of the Output Feedback mode’s insensitivity to transmission errors and the applicability to bulk encryption of multiple users’ transmissions are presented, along with the disadvantages of an increased sensitivity to bit slippage and a requirement for more complex synchronization procedures.

Analysis of Certain Aspects of Output Feedback Mode

Manipulation Detection Codes (MDC) are defined as a class of checksum algorithms which can detect both accidental and malicious modifications of an electronic message or document. Although the MDC result must be protected by encryption to prevent an attacker from succeeding in substituting his own Manipulation Detection Code (MDC) along with the modified text, MDC algorithms do not require the use of secret information such as a cryptographic key. Such techniques are therefore highly useful in allowing encryption and message authentication to be implemented in different protocol layers in a communication system without key management difficulties, as well as in implementing digital signature schemes. It is shown that cryptographic checksums that are intended to detect fraudulant messages should be on the order of 128 bits in length, and the ANSI X9.9-1986 Message Authentication Standard is criticized on that basis. A revised 128-bit MDC algorithm is presented which overcomes the so-called Triple Birthday Attck introduced by Coppersmith. A fast, efficient implementation is discussed which makes use of the Intel 8087/80287 Numeric Data Processor coprocessor chip for the IBM PC/XT/AT and similar microcomputers.

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Robert R. Jueneman

Papers

Analysis of Certain Aspects of Output Feedback Mode

A high speed manipulation detection code