Title: Writing program in C++ or Java to implement RSA algorithm for key generation and cipher verification.

Objective: To study,
1. Public key algorithm.
2. RSA algorithm
3. Concept of Public key and Private Key.

Theory:

Public Key Algorithm:

Asymmetric algorithms rely on one key for encryption and a different but related key for decryption. These algorithms have the following important characteristics:

• It is computationally infeasible to determine the decryption key given only knowledge of the cryptographic algorithm and the encryption key.

In addition, some algorithms, such as RSA, also exhibit the following characteristics:

• Either of the two related keys can be used for encryption, with the other used for decryption. A public key encryption scheme has six ingredients:

• Plaintext: This is readable message or data that is fed into the algorithm as input.

• Encryption algorithm: The encryption algorithm performs various transformations on the plaintext.

• Public and private key: This is a pair of keys that have been selected so that if one is used for encryption, the other is used for decryption. The exact transformations performed by the algorithm depend on the public or private key that is provided as input.

• Cipher text: This is the scrambled message produced as output. It depends on the plaintext and the key. For a given message, two different keys will produce two different cipher texts.

• Decryption algorithm: This algorithm accepts the ciphertext and the matching key and produces the original plaintext. [pic]
The essential steps are as the following:
1. Each user generates a pair of keys to be used for the encryption and decryption of messages. 2. Each user places one of the two keys in a public register or the other accessible file. This is the public key. The companion key is kept private. As...

...What do you understand by symmetric key cryptography? What are the main advantages and disadvantages of symmetric key cryptography? 13.21 What is publickey encryption? In what way is it different from private key encryption? Why is it important in E-Commerce? 13.22 What are the main differences between DES based encryption and RSA based encryption? Is it possible to combine these two systems? If so explain...

...Paper
On
RSA
Subject: Information System and Cyber Laws
Bachelor of Technology
In
Computer Science & Engineering
Session: 2012-13
Submitted to: Submitted by:
Ms. Shruti Saxena Arpit Varshney
Roll No.1012210026
Group: 61
SHRI RAMSWAROOP MEMORIAL Group OF
PROFESSIONAL COLLEGES, LUCKNOW
Affiliated to
G.B. TECHNICAL UNIVERSITY, LUCKNOW
INTRODUCTION
* RSA is...

...
PublicKey Infrastructure
(PKI)
TS5130 System Development Theory and Practice
June 16, 2007
Table of Contents
Purpose and Function: 7
How PKI Works: 9
Table of Figures
Figure 1: Required Key and Certificate Management Services 8
Figure 2: How PKI Works 10...

...a specific amount of traffic is transmitted.
election rekeying
volume rekeying
idle rekeying
time rekeying
Question 4
________, a sub-set of asymmetric cryptography, is based on key pairs.
digital certificate
multi-factor authentication
ciphertext
publickey cryptography
Question 5
A hacker captures and retransmits authentication packets against the same server in order to gain interactive or session...

...The RSA Algorithm
Evgeny Milanov 3 June 2009
In 1978, Ron Rivest, Adi Shamir, and Leonard Adleman introduced a cryptographic algorithm, which was essentially to replace the less secure National Bureau of Standards (NBS) algorithm. Most importantly, RSA implements a public-key cryptosystem, as well as digital signatures. RSA is motivated by the published works of Diﬃe and Hellman from several years before, who described the...

...PublicKey Infrastructure (PKI)
PublicKey Infrastructure (PKI) is a security architecture that has been introduced to provide an increasedlevel of confidence for exchanging information over an increasingly insecure Internet.
PKI may involve the use of methods, technologies and techniques that together provide a secure infrastructure. PKI involves the use of a publickey and private key pair...

...1) How does the publickey cryptography work? Explain in detail?
1. Public-key, what it is
Public-key refers to a cryptographic mechanism. It has been named public-key to differentiate it from the traditional and more intuitive cryptographic mechanism known as: symmetric-key, shared secret, secret-key and also called private-key....

...
Keys to Locking the Door
By:
Course: 280 Principles Info System Security
Professor:
ABC Institute of Research has collaborated with the XYZ Inc. to research genetics. They have highly sensitive information that needs to be protected from their rivals and must be protected. ABC Institute knows how sensitive this information is and have raised several concerns about the security between the two companies. There has been an ongoing debate over...

1002 Words |
3 Pages

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