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Security Fundamentals (2) Encryption mechanisms

Security Fundamentals (2) Encryption mechanisms

Security Fundamentals (2) Encryption mechanisms. 4/2011. 2-5 MODERN BLOCK CIPHERS. A symmetric-key modern block cipher encrypts an n-bit block of plaintext or decrypts an n-bit block of ciphertext . The encryption or decryption algorithm uses a k-bit key. . 2-5 Continued.

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805 views • 64 slides
CSC 405 Introduction to Computer Security

CSC 405 Introduction to Computer Security

CSC 405 Introduction to Computer Security. Topic 2. Basic Cryptography (Part I). Cryptography. Cryptography Original meaning: The art of secret writing Becoming a science that relies on mathematics (number theory, algebra) Process data into unintelligible form, reversible, without data loss

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688 views • 52 slides
ECE454/CS594 Computer and Network Security

ECE454/CS594 Computer and Network Security

ECE454/CS594 Computer and Network Security. Dr. Jinyuan (Stella) Sun Dept. of Electrical Engineering and Computer Science University of Tennessee Fall 2011. Secret Key Cryptography. Block cipher DES 3DES AES. Generic Block Encryption.

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639 views • 43 slides
Encryption and Security

Encryption and Security

Encryption and Security. Outline. Overview of encryption Terminology History Common issues Secret-key encryption Block and stream ciphers DES RC5. Overview. Intro, history and terminology Symmetric-key encryption Techniques DES, RC5 Public-key encryption

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482 views • 33 slides
CRYPTOLOGY (study of hidden writing)

CRYPTOLOGY (study of hidden writing)

SEMINAR ON. CRYPTOLOGY (study of hidden writing). BY PRIYA DAS GIRINDRA CHANDRA NATH. Contents. Introduction Cryptology Cryptography Secret key cryptography Public key cryptography Differences between 2 keys Application of cryptography Cryptanalysis Conclusion

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343 views • 20 slides

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