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Secure hash algorithm sha - PowerPoint PPT Presentation

Chapter 21

Chapter 21

Chapter 21. Public-Key Cryptography and Message Authentication. Secure Hash Algorithm (SHA). SHA was originally developed by NIST published as FIPS 180 in 1993 was revised in 1995 as SHA-1 produces 160-bit hash values NIST issued revised FIPS 180-2 in 2002

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1.23k views • 102 slides
Cryptographic Hash Functions (Ch. 11)

Cryptographic Hash Functions (Ch. 11)

Cryptographic Hash Functions (Ch. 11). Applications of cryptographic hash functions Simple hash functions Requirements and security Hash functions based on cipher block chaining Secure hash algorithm (SHA) SHA-3 Summary. Hash functions. Condenses arbitrary message to fixed size h = H(M)

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565 views • 56 slides
Guide to Network Defense and Countermeasures Third Edition

Guide to Network Defense and Countermeasures Third Edition

Guide to Network Defense and Countermeasures Third Edition. Chapter 5 Cryptography. Components of Cryptographic Protocols. Cryptography : process of converting readable text, programs, and graphics into data that cannot be easily read or executed by unauthorized users

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750 views • 54 slides
Cryptographic Hash Functions (Ch. 11)

Cryptographic Hash Functions (Ch. 11)

Cryptographic Hash Functions (Ch. 11). Applications of cryptographic hash functions Simple hash functions Requirements and security Hash functions based on cipher block chaining Secure hash algorithm (SHA) SHA-3 Summary. Hash functions. Condenses arbitrary message to fixed size h = H(M)

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468 views • 46 slides
Chapter 2 Advanced Cryptography (Part C)

Chapter 2 Advanced Cryptography (Part C)

Chapter 2 Advanced Cryptography (Part C). Message integrity Cryptanalysis. Message integrity. Parity bits and Hash functions have been used in protocols to detect modifications in streams of bits as they are passed from one computer to another To detect unintentional modifications .

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396 views • 32 slides
Chapter 21

Chapter 21

Chapter 21. Public-Key Cryptography and Message Authentication. Secure Hash Functions. Secure Hash Algorithm (SHA). SHA was originally developed by NIST published as FIPS 180 in 1993 was revised in 1995 as SHA-1 produces 160-bit hash values NIST issued revised FIPS 180-2 in 2002

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455 views • 26 slides
Chapter 21

Chapter 21

Chapter 21. Public -Key Cryptography and Message Authentication. Secure Hash Algorithm (SHA). SHA was originally developed by NIST P ublished as FIPS 180 in 1993 W as revised in 1995 as SHA-1 Produces 160-bit hash values NIST issued revised FIPS 180-2 in 2002

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597 views • 24 slides
Information Security and Management 11. Cryptographic Hash Functions

Information Security and Management 11. Cryptographic Hash Functions

Information Security and Management 11. Cryptographic Hash Functions. Chih-Hung Wang Fall 2011. Hash Function. Definition A hash function accepts a variable-size message M as input and produces a fixed-size hash code H(M) Sometime called a message digest Hash Algorithm MD5

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246 views • 23 slides
ICS 454 Principles of Cryptography

ICS 454 Principles of Cryptography

ICS 454 Principles of Cryptography. Secure Hashing and DSS Sultan Almuhammadi. Outline. One-way functions Secure Hash function Authentication (example) Digital Signature Standards (DSS). Definitions. One-way function f :A ? B Given x ? A, it is easy to compute f ( x )

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275 views • 19 slides
Chapter 3 Encryption Algorithms & Systems (Part C)

Chapter 3 Encryption Algorithms & Systems (Part C)

Chapter 3 Encryption Algorithms & Systems (Part C). Outline. NP-completeness & Encryption Symmetric (secret key) vs Asymmetric (public key) Encryptions Popular Encryption Algorithms Merkle-Hellman Knapsacks RSA Encryption El Gamal Algorithms DES Hashing Algorithms Key Escrow & Clipper.

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297 views • 17 slides
SHA (secure hash algorithm)

SHA (secure hash algorithm)

SHA (secure hash algorithm). Jen-Chang Liu, 2005 Adapted from l ecture slides by Lawrie Brown. History of SHA. SHA: secure hash algorithm Developed by National Institute of Standard and Technology (NIST) Based on the MD4 FIPS 180 in 1993

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922 views • 9 slides

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