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Information Security & Cryptography

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Arun ACE
Arun ACE

This document provides an overview of information security and cryptography. It discusses objectives of security like avoiding data threats. It also covers topics like password auditing, data security, authentication, encryption, decryption, public and private key cryptography, digital signatures, and the RSA algorithm. It demonstrates an example of encrypting a message using RSA and decrypting the cipher text. The conclusion emphasizes the importance of information security.

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It's a Presentation from THIAGARAJAR POLYTECHNIC COLLEGE (Autonomous Institution) Salem - 5
Information Security & Cryptography
Presented & performed by ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Synopsis
INFO SECURITY -> a small intro… ,[object Object],[object Object],[object Object]
OBJECTIVES OF SECURITY ,[object Object],[object Object],[object Object],[object Object],[object Object]
PASSWORD AUDITING ,[object Object],[object Object],[object Object],[object Object],[object Object]
DATA SECURITY ,[object Object],[object Object],[object Object]
CYPTOGRAPHY -> small intro… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],Cryptography
ENCRYPTION AND DECRYPTION ,[object Object],[object Object],[object Object],[object Object],[object Object]
Principles of public key system John’s public key John Annie plaintext cipher text Dec.ALG Enc.ALG plaintext
The SD3 Security Framework Secure by Design Secure by Default Secure in Deployment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The Secure Windows project team at Microsoft has adopted a simple set of tactic called SD3. ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],RSA Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object]
Decryption Algorithm Message Source Encryption Algorithm Destination Crypt. Analyst Key Pair Source X Y X PR a PR a PU a X=E(PR ,X) a X=D(PU ,Y) a X=WELCOME Y=5370379 Principles of public key system -> a DEMONSTRATION
Conclusion
This Paper has been submitted under the guidance of ,[object Object],[object Object],[object Object],MR.D.ARUL SELVAN M.E., Head Of the Department / Computer Technology
“ Thank You” “ For every lock there is a Key… It is better to KEEP SAFE YOUR LOCK THAN THE KEY”
Bibliography ,[object Object],[object Object],[object Object],Website www.wikipedia.com www.securitymeasures.com

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Information Security & Cryptography

  • 1. It's a Presentation from THIAGARAJAR POLYTECHNIC COLLEGE (Autonomous Institution) Salem - 5
  • 2. Information Security & Cryptography
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  • 12. Principles of public key system John’s public key John Annie plaintext cipher text Dec.ALG Enc.ALG plaintext
  • 13.
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  • 15. Decryption Algorithm Message Source Encryption Algorithm Destination Crypt. Analyst Key Pair Source X Y X PR a PR a PU a X=E(PR ,X) a X=D(PU ,Y) a X=WELCOME Y=5370379 Principles of public key system -> a DEMONSTRATION
  • 17.
  • 18. “ Thank You” “ For every lock there is a Key… It is better to KEEP SAFE YOUR LOCK THAN THE KEY”
  • 19.

Editor's Notes

  1. 18 October 2010
  2. 18 October 2010
  3. The SD3 security framework has proven an effective tool for encouraging the adoption of secure development practices. Ensure your systems are secure by design, meaning that you have carried out threat modelling to identify security vulnerabilities, you conduct code reviews focusing on security issues and that you ensure that security testing is an integral part of the testing process. Write software that runs with just enough privilege to carry out its purpose, but no more. Implement systems that are secure by default. Reduce the potential for attack by ensuring that optional features are turned off by default. Secure in Deployment. Ensure that your systems are easy to administer and update, so that security vulnerabilities may be addressed. Educate users on how to use the application securely. Provide a continuing program of security assessments and testing.
  4. 18 October 2010