Base64 uses a 65 character subset of US-ASCII, allowing 6 bits for each character so the character m with a Base64 value of 38, when represented in binary form, is 100110. When a text string, letâ„¢s say mne is encoded this is what happens : The text string is converted into its US-ASCII value. (In US-ASCII each character is assigned a value) ....etc

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SECURE EMAIL TRANSACTION SYSTEM.
ABSTRACT
Communication is the backbone of any enterprise. Communication, without exchange of data, is unimaginable. In the context of communication between Enterprise level applications, the amount of data would be huge. So using traditional approaches in Electronic Data Interchange wouldn't suffice.
For our project we have introduced and incorporated the theoretical ideas of Cryptography directly into the sending and receiving of e-mails through our e-mail application. We use RSA Encr ....etc

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Seminar Report On
QUANTUM CRYPTOGRAPHY
Submitted by
SANTHIMOL A. K.
In the partial fulfillment of requirements in degree of
Master of Technology in Computer and Information Science
DEPARTMENT OF COMPUTER SCIENCE
COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
KOCHI-682022
2008 Page 2

ACKNOWLEDGEMENT
I thank GOD almighty for guiding me throughout the seminars. I would like to
thank all those who have contributed to the completion of the seminar and helped me
with valuable suggestions for improvement.
I am extremely gratef ....etc

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Kerberos is security system that helps prevent people from stealing information that gets sent across the wires from one computer to another. Usually, these people are after your password. The name Kerberos comes from the mythological three-headed dog whose duty it was to guard the entrance to the underworld. The Kerberos security system, on the other hand, guards electronic transmissions that get sent across the Internet. It does this by scrambling the information -- encrypting it -- so that only the compu ....etc

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A Seminar Report On Public Key Infrastructure

Abstract
Public Key Infrastructure is a system for supporting digital signatures and document encryption for an organization. It is fast becoming essential for an effective secure commerce and to fulfill general security and authentication requirements over non-secure networks (like the Net). The banking services are the most popular usage of this technology, which is quickly spreading over all the applications that need security to be fully operational.
The objective of ....etc

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LINUX FROM SCRATCH
PROJECT REPORT
Submitted by
FALCON FRANCIS MANJU V RAVINDRAN RANJITH KIRAN K SOUMI CG VINU THANKACHAN
CHAPTER 1INTRODUCTION
One important reason for LFS's existence is to help people learn how a Linux system works from the inside out. One of the best things that this learning experience provides is the ability to customize Linux to your own tastes and needs.
A key benefit of LFS is that it allows users to have more control over the system without relying on someone else's Linux implementation.
Anot ....etc

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STEGANOGRAPHY
PROJECT REPORT
Submitted by
ANJU.P ALIAS RESHMI JOSY SARITHA.K.C VIDYA RADHAKRISHNAN
1.1 INTRODUCTION
Steganography is the art and science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message; this is in contrast to cryptography, where the existence of the message itself is not disguised, but the content is obscured. The advantage of steganography over cryptography alone is that messages do not attract attention to themselves, to mess ....etc

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Private-Key Cryptography
• traditional private/secret/single key cryptography uses one key
• Key is shared by both sender and receiver
• if the key is disclosed communications are compromised
• also known as symmetric, both parties are equal
• hence does not protect sender from receiver forging a message & claiming is sent by sender
Public-Key Cryptography
• probably most significant advance in the 3000 year history of cryptography
• uses two keys – a public key and a private key
....etc

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#include
#include
#include
void main()
{
double p,q,n,m,e,k,z,d1,c1,c2,y;
double d,l,x,c,d2;
clrscr();
printf(The P,Q Primary values:);
scanf(%lf%lf,&p,&q);
n=p*q;
printf(N value is %lf,n);
k=(p-1)*(q-1);
printf(\n K(n) value is:%lf,k);
printf(\n Enter the Integer which is relative to the prime to the K(n));
scanf(%lf,&e);
d2=pow(e,-1);
d=fmod(d2,k);
printf(%lf,&d);
printf(\n Enter the plain text number );
scanf(%lf,&m);
d1=pow(m,e);
c=fm ....etc

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hello sir i need to get the source code for RSA for plain text and decryp the same in plain text

can i make use of RSA double encryption/decryption for the same? ....etc

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hi. My name is jeevan. I would like to get details on how to encrypt and decrypt image in Matlab using AES algorithm. kindly help me. ....etc

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1. INTRODUCTION
As XML becomes a predominant means of linking blocks of information together, there is a requirement to secure specific information. That is to allow authorized entities access to specific information and prevent access to that specific information from unauthorized entities. Current methods on the Internet include password protection, smart card, PKI, tokens and a variety of other schemes. These typically solve the problem of accessing the site from unauthorized users, but do not provide mechanisms for t ....etc

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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

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Base64 uses a 65 character subset of US-ASCII, allowing 6 bits for each character so the character m with a Base64 value of 38, when represented in binary form, is 100110. When a text string, let's say mne is encoded this is what happens : The text string is converted into its US-ASCII value. (In US-ASCII each character is assigned a value)

Download Full Seminar Report
Downlaod

Mirror ....etc

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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

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