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Introduction to Modern Symmetric-key Ciphers

Introduction to Modern Symmetric-key Ciphers

Introduction to Modern Symmetric-key Ciphers. Outline. ? Stream Ciphers and Block Ciphers ? Diffusion and Confusion ? Components of block ciphers such as P-boxes, S-boxes and rounds. ? Feistel and non-Feistel ciphers.

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2.23k views • 68 slides
Block Ciphers

Block Ciphers

Block Ciphers. Instructor: Dania Alomar. Secret Key Cryptography. Both encryption and decryption keys are the same and are kept secret. The secret key must be known at both ends to perform encryption or decryption.

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653 views • 64 slides
Ch 3: Block Ciphers and the Data Encryption Standard

Ch 3: Block Ciphers and the Data Encryption Standard

Information and Network Security. Ch 3: Block Ciphers and the Data Encryption Standard. Modern Block Ciphers. will now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy and/or authentication services

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593 views • 39 slides
Ch 3: Block Ciphers and the Data Encryption Standard

Ch 3: Block Ciphers and the Data Encryption Standard

Information and Network Security. Ch 3: Block Ciphers and the Data Encryption Standard. Modern Block Ciphers. will now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy and/or authentication services

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562 views • 39 slides
University of Palestine

University of Palestine

University of Palestine. Information Security Principles ITGD 2202 Ms. Eman Alajrami 2 nd Semester 2008-2009. One-Time Pad. if a truly random key as long as the message is used, the cipher will be secure called a One-Time pad

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305 views • 18 slides

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