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A NETWORK SECURITY APPROACH USING RSA.

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Tuhin_Das

IT IS BASED ON THE PRINCIPLE OF ENCRYPTION AND DECRYPTION OF DATA USING RSA....... RSA STANDS FOR RON RIVEST ,ADI SHAMIR & LEONARDO ADDLEMAN.

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SMT.BHAGWATI CHATURVEDI COLLEGE OF ENGG.LokmanyaTilakJankalyanShikshanSanstha PAPER PRESENTATION A NETWORK SECURITY APPROACH : RSA ALGORITHM GUIDED BY – PROF. MANOJ CHAUDARY SIR Presented By : TUHIN DAS IV SEM C.S.E
CONTENTS ,[object Object]
Method of Encryption & Decryption .
Introduction to RSA    . 
Example of RSA algorithm .
  Security of RSA.
RSA currently in use today. 
Advantages & limitations.   
  Conclusion.
References  .                                 ,[object Object]
Decryption : The process of turning ciphertext back into the original plaintext.
Encryption algorithm : Algorithm that performs various transformation operation on plaintext.

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A NETWORK SECURITY APPROACH USING RSA.

  • 1. SMT.BHAGWATI CHATURVEDI COLLEGE OF ENGG.LokmanyaTilakJankalyanShikshanSanstha PAPER PRESENTATION A NETWORK SECURITY APPROACH : RSA ALGORITHM GUIDED BY – PROF. MANOJ CHAUDARY SIR Presented By : TUHIN DAS IV SEM C.S.E
  • 2.
  • 3. Method of Encryption & Decryption .
  • 4. Introduction to RSA    . 
  • 5. Example of RSA algorithm .
  • 7. RSA currently in use today. 
  • 8. Advantages & limitations.   
  • 10.
  • 11. Decryption : The process of turning ciphertext back into the original plaintext.
  • 12. Encryption algorithm : Algorithm that performs various transformation operation on plaintext.
  • 13. Decryption algorithm : Accepts the ciphertext ,matching key and produce plaintext.
  • 14. Cryptology : Branch of mathematics which deals with both cryptography and cryptoanalysis.
  • 15.
  • 16.
  • 17. In RSA algorithm plaintext and ciphertext are integers between 0 and n-1 for some n.
  • 18. There are two types of keys public & private keys which is a pair of keys that have been selected so that if one is used for encryption , the other is used for decryption.
  • 19. Both sender and receiver must know the value of n.
  • 20.
  • 21. Calculate n = p*q = 17*11 = 187.
  • 22. Calculate phi (n) = (p-1)*(q-1) = 16 * 10 =160.
  • 23. Select e such that GCD(phi (n) ,e)=1 ; 1
  • 24.
  • 25. SECURITY OF RSA The security of the system depends on two critical assumptions: 1) Factoring is required to break the system, and Factoring is `inherently computationally intractable', or, alternatively, `factoring is hard‘ and `any approach that can be used to break the system is at least as hard as factoring'.
  • 26.
  • 27. It is found in many commercial software products. It is built into current operating systems by Microsoft, Apple and etc.
  • 28. In hardware, RSA can be found in secure telephones, on Ethernet network cards, and on smart cards. In addition, RSA is incorporated into all of the major protocols for secured Internet communication.
  • 29.
  • 30.
  • 31. no reporting arithmetic bits are needed.
  • 32. Programming can be done with a polynomial structure.
  • 33.
  • 34. RSA is one of the standard algorithms that is used in most of the encryptions and decryption tasks.REFERENCES Cryptography And Network Security - By William Stallings.Principles Of Key Management - By W .Fumy And P. Landrock.A Comparative Study Of RSA Encryption And Decryption – By R.E Ting And S.T. Barnum.
  • 35. THANK YOU .....