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Cryptography is the science of using mathematics to encrypt and decrypt data.

Cryptography is the 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. What is Cryptography?.

1.79k views • 120 slides

Chap.10 Indexed Sequential File Access and Prefix B+ Trees

File Structures by Folk, Zoellick, and Ricarrdi. Chap.10 Indexed Sequential File Access and Prefix B+ Trees. ????? ?????? ?????????? SNU-OOPSLA-LAB ?? ? ? ?. Chapter Objectives. Introduce indexed sequential files

1.34k views • 46 slides

COM 5336 Cryptography Lecture 6 Public Key Cryptography & RSA

COM 5336 Cryptography Lecture 6 Public Key Cryptography & RSA. Scott CH Huang. COM 5336 Cryptography Lecture 6. Outline. One-way Trapdoor functions Basic Number Theory for RSA RSA Digital Signatures. One-Way Trapdoor Functions. One-Way Functions.

623 views • 33 slides

Conventional Encryption Message Confidentiality

Conventional Encryption Message Confidentiality. Henric Johnson Blekinge Institute of Technology, Sweden http://www.its.bth.se/staff/hjo/ henric.johnson@bth.se. Outline. Conventional Encryption Principles Conventional Encryption Algorithms Cipher Block Modes of Operation

386 views • 26 slides

The VAP-S: A Virtual Supermarket for the Assessment of Executive Functioning

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Information Security CS 526 Topic 2

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Information Security CS 526 Topic 2

Information Security CS 526 Topic 2. Cryptography: Terminology & Classic Ciphers. Readings for This Lecture. Required readings: Cryptography on Wikipedia Interesting reading The Code Book by Simon Singh. Goals of Cryptography.

314 views • 21 slides

Computer Security CS 426 Lecture 4

Computer Security CS 426 Lecture 4. Cryptography: Block Ciphers and Encryption Modes. Why Block Ciphers?. One thread of defeating frequency analysis Use different keys in different locations Example: one-time pad, stream ciphers Another way to defeat frequency analysis

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Cryptography

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