As we tend towards a more and more computer centric world, the concept of data security has attained a paramount importance. Though present day security systems offer a good level of protection, they are incapable of providing a trust worthy environment and are vulnerable to unexpected attacks. Palladium is a content protection concept that has spawned from the belief that the pc, as it currently stands, is not architecturally equipped to protect a user forms the pitfalls and challenges that an all-pervasive network such as the Internet poses.
....etc

[:=Read Full Message Here=:]

Introduction to Symmetric Block Cipher
Cryptography
• Encryption algorithm also called a cipher
• Cryptography has evolved so that modern encryption and decryption use secret keys
• Cryptographic algorithms can be openly published
• Only have to protect the keys
Symmetric-Key Cryptography
• Both sender and receiver keys are the same: KA=KB
• The keys must be kept secret and securely distributed
• Thus, also called “Secret Key Cryptography”
• Data Encryption Standard (D ....etc

[:=Read Full Message Here=:]

Characteristics of advanced symmetric block ciphers
....etc

[:=Read Full Message Here=:]

....etc

[:=Read Full Message Here=:]

Cryptovirology'' employs a twist on cryptography, showing that it can also be used offensively.It is used to unleash extortion based attacks that cause loss of access to information, loss of confidentiality, and information leakage, tasks which cryptography typically prevents.Thus cryptography when combined with rogue software (viruses, Trojan horses) can cause potential threats and attacks. cryptographic tools should be managed and audited in general purpose computing environments, and the access to cryptographic tools should be well rest ....etc

[:=Read Full Message Here=:]

NTRU (Number Theory Research Unit)
Abstract
CRYPTOGRAPHY:
Cryptography is an algorithmic process of converting a plain text message to a cipher text message based on an algorithm that both the sender and receiver know, so that the cipher text message can be returned to its original, plain text form. In its cipher form, a message cannot be read by anyone other than the intended receiver. The act of converting a plain text message to its cipher text is called enciphering. Reversing that act is deciphering. Enciphering and ....etc

[:=Read Full Message Here=:]

Seminar Report
On
SIGNCRYPTION
SUBMITTED BY
ANIL C.B.
IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF
DEGREE OF MASTER OF TECHNOLOGY (M.TECH.)
IN
SOFTWARE ENGINEERING
DEPARTMENT OF COMPUTER SCIENCE
COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
COCHIN - 682022
2005Page 2

Signcryption
Department of Computer Science CUSAT
2
DEPARTMENT OF COMPUTER SCIENCE
COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
COCHIN “ 682022
Certificate
This is to certify that the Seminar report entitled
?
Signcryption
?
,
submitted ....etc

[:=Read Full Message Here=:]

....etc

[:=Read Full Message Here=:]

Cryptography

ABSTRACT
This paper introduces Cryptography
Techniques. Cryptography is The science of
protecting data & Network Security keeping
information private and Secure from
unauthorized Users.
This paper gives the Fundamental
Requirements for the Data Transmission, the
security attacks like Interruption, Interception
and Modification of the data Transmission.
The Cryptographic Process
explaining through a generalized function is
discussed through which encryption and
decryption is done by the various ....etc

[:=Read Full Message Here=:]

Cryptovirology'' employs a twist on cryptography, showing that it can also be used offensively.It is used to unleash extortion based attacks that cause loss of access to information, loss of confidentiality, and information leakage, tasks which cryptography typically prevents.Thus cryptography when combined with rogue software (viruses, Trojan horses) can cause potential threats and attacks. cryptographic tools should be managed and audited in general purpose computing environments, and the access to cryptographic tools should be well rest ....etc

[:=Read Full Message Here=:]

EMBEDDED SECURITY USING PUBLIC KEY CRYPTOGRAPHY IN MOBILE PHONES
ABSTRACT
As mobile networks expand their bandwidth, mobile phones, as with any other Internet device, become substantially exposed to Internet security vulnerabilities. Since mobile phones are becoming popular and widely distributed, they are increasingly used for financial transactions and related electronic commerce. Consequently, they will feature applications that also demand adequate security functions. In this regard, the prevailing security system in ....etc

[:=Read Full Message Here=:]

five models of symmetric key algorithm

Give a detail Compative study of all five models of symmetric key algorithm?
Ans. Secret Key Cryptography
With secret key cryptography, a single key is used for both encryption and decryption. the sender uses the key (or some set of rules) to encrypt the plaintext and sends the ciphertext to the receiver. The receiver applies the same key (or ruleset) to decrypt the message and recover the plaintext. Because a single key is used for both functions, secret key cryptog ....etc

[:=Read Full Message Here=:]

Abstract
This paper discusses reduction of the number of product terms in representation of totally symmetric Boolean functions by Sum of Products (SOP) and Fixed Polarity Reed- Muller (FPRM) expansions. The suggested method reduces the number of product terms, correspondingly, the implementation cost of symmetric functions based on these expressions by exploiting Gray decoding of input variables. Although this decoding is a particular example of all possible linear transformation of Boolean variables, it is efficient in the case of sy ....etc

[:=Read Full Message Here=:]

what are the characterstics of advanced symmetric block cipher ....etc

[:=Read Full Message Here=:]

Abstract
This paper discusses reduction of the number of product terms in representation of totally symmetric Boolean functions by Sum of Products (SOP) and Fixed Polarity Reed- Muller (FPRM) expansions. The suggested method reduces the number of product terms, correspondingly, the implementation cost of symmetric functions based on these expressions by exploiting Gray decoding of input variables. Although this decoding is a particular example of all possible linear transformation of Boolean variables, it is efficient in the case of sy ....etc

[:=Read Full Message Here=:]

ABSTRACT
Based on the understanding of high-level geometric knowledge, especially symmetry, imposed upon objects in images, we demonstrate in this paper how to edit images in terms of correct 3-D shape and relationships of the objects, without explicitly performing full 3-D reconstruction. Symmetry is proposed as the central notation that unifies both conceptually and algorithmically all types geometric regularities such as parallelism, orthogonality, and similarity. The methods are extremely simple, accurate, and easy to implement, and demon ....etc

[:=Read Full Message Here=:]

A Novel Secure Communication Protocol for Ad Hoc networks
Abstract
An ad hoc network is a self organized entity with a number of mobile nodes without any centralized access point and also there is a topology control problem which leads to high power consumption and no security, while routing the packets between mobile hosts. Authentication is one of the important security requirements of a communication network. The common authentication schemes are not applicable in Ad hoc networks.
In this paper, we propose a s ....etc

[:=Read Full Message Here=:]

please I need iris recognition using circular symmetric filters ....etc

[:=Read Full Message Here=:]

....etc

[:=Read Full Message Here=:]