Information Security & Cryptography

Information Security & Cryptography

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  It's a Presentationfrom THIAGARAJAR POLYTECHNIC COLLEGE (Autonomous Institution) Salem - 5
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  Information Security &Cryptography
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  Presented & performedby Ranjith. B Arunachalam. PL COMPUTER ENGINEERING
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  INFORMATION SECURITY OBJECTIVESOF SECURITY PASSWORD AUDITING DATA SECURITY AUTHENTICATION CRYPTOGRAPHY Encryption and Decryption Public & Private Key Cryptography Digital signatures RSA ALGORITHM DEMONSTRATION CONCLUSION Synopsis
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  INFO SECURITY -> a small intro… Why it is needed ? Where ? How?
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  OBJECTIVES OF SECURITYTo avoid data threats To avoid denial of services To secure our data from Masquerades To safeguard our data's from traffic analyzer To not to make the message for the third person available
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  PASSWORD AUDITING Should not be in uppercases Must have at least 8 characters Must include alphabets, numeric keys and special characters Password should not be the name of the user, dictionary word etc., It must be updated at least once a month
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  DATA SECURITY Tomonitor the users ACCESS CONTROLS Systems that are connected in networks must be protected with FIREWALLS To protect the integrity and availability of the institution’s information assets
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  CYPTOGRAPHY -> smallintro… KEYWORDS Cryptography Encryption & Decryption Public Key Cryptography Private Key Cryptography Digital Signatures RSA Algorithm
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  Cryptography isthe science of using mathematics to encrypt and decrypt data. Cryptography enables you to store sensitive information or transmit it across insecure networks (like the Internet) so that it cannot be read by anyone except the intended recipient. Its very usefull to OUR Army and Police networks to transfer confidential datas. Cryptography
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  ENCRYPTION AND DECRYPTIONEncryption is a technique that converts the original text into an unreadable text The converted original text is called as CIPHER TEXT Decryption technique is used to convert the cipher text into the original text Authentication is the verification process which identifies the password and username Digital signatures are signed to make the cipher text into unreadable or unchangeable
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  Principles of publickey system John’s public key John Annie plaintext cipher text Dec.ALG Enc.ALG plaintext
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  The SD3 SecurityFramework Secure by Design Secure by Default Secure in Deployment Build threat models Conduct code reviews Run code with minimal privileges Minimize your attack surface Enable services securely Leverage the security best practices Create security guidance Build tools to assess application security The Secure Windows project team at Microsoft has adopted a simple set of tactic called SD3. Minimize your attack surface Enable services securely Minimize your attack surface Enable services securely
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  Published in 1978by MIT, US The main function of this algorithm is to providing approach to public key cryptography and encryption In this the CIPHER TEXT are all the integers between 0 to n-1 C = m e mod n m = c d mod n = (me)d mod n = med modn RSA Algorithm m -> message e -> encryption d -> decryption n -> integers (p*q) P and Q are the prime numbers
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  Decryption Algorithm MessageSource 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
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  Conclusion
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  This Paper hasbeen submitted under the guidance of Over headed by M.Saravanan (M.E) – Lecturer (Computer Tech). PL.Sindhu B. E – Lecturer (Computer Tech). MR.D.ARUL SELVAN M.E., Head Of the Department / Computer Technology
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  “ Thank You”“ For every lock there is a Key… It is better to KEEP SAFE YOUR LOCK THAN THE KEY”
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  Bibliography References CCNA INTRO - Wendell Odom Network Essentials – William Stalings Website www.wikipedia.com www.securitymeasures.com