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Cryptography Cryptography ` Cryptography is the art of achieving security by encoding messages to make them non readable. Plain Text Cipher Text Encryption Decryption Key…

Technology Lecture 2 crypto and basics of protocols

1. S-38.3153 Mikko Säreläkeskiviikkona 28. maaliskuuta 2012 2. Today’s plan • Learn about protocols• Remote login • How to solve security problems? • How can…

Documents 1 RSA. 2 Prime Numbers An integer p is a prime number if it has no factors other than 1 and itself.....

Slide 11 RSA Slide 2 2 Prime Numbers An integer p is a prime number if it has no factors other than 1 and itself. An integer which is greater than 1 and not a prime number…

Documents Digital Signature

1.Digital Signature Integrity Authentication Unforgeable Non-repudiation2. Conventional signatureVS. Digital signature A signature is physically part of the document being…

Documents Applied Cryptography1 Michael McCarthy. Applied Cryptography2 “SOAP is going to open up a whole...

Slide 1 Applied Cryptography1 Michael McCarthy Slide 2 Applied Cryptography2 “SOAP is going to open up a whole new avenue for security vulnerabilities” Bruce Schneier,…

Documents Introduction to Modern Cryptography Lecture 7 1.RSA Public Key CryptoSystem 2.One way Trapdoor...

Slide 1 Introduction to Modern Cryptography Lecture 7 1.RSA Public Key CryptoSystem 2.One way Trapdoor Functions Slide 2 Diffie and Hellman (76) “New Directions in Cryptography”…

Documents 7/2/2015M. Chatterjee1 Public Key Algorithms. 7/2/2015M. Chatterjee2 Modular Arithmetic Public key.....

Slide 1 7/2/2015M. Chatterjee1 Public Key Algorithms Slide 2 7/2/2015M. Chatterjee2 Modular Arithmetic Public key algorithms are based on modular arithmetic. Modular addition.…

Documents Introduction to Cryptography (1). What is Cryptography Cryptography –In a narrow sense Mangling...

Slide 1 Introduction to Cryptography (1) Slide 2 What is Cryptography Cryptography –In a narrow sense Mangling information into apparent unintelligibility Allowing a secret…

Documents CNS2010handout 9 :: asymmetric crypto1 computer and network security matt barrie.

CNS2010 handout 9 :: asymmetric crypto * computer and network security matt barrie handout 9 :: asymmetric crypto CNS2009 handout 9 :: asymmetric crypto * origins of public…

Documents Week 7: Public-Key Cryptography

Week 7: Public-Key Cryptography MSIS 525 Encryption and Authentication Systems Summer 2010 Topics Public Key Encryption (PKE) PKE Math Symmetric Key Exchange Using PKE Distributing…