What is a hash algorithm?

Requirements of a good hash algorithm

The Avalanche Effect

Avoid Hash Collisions

Broken hash algorithms

Breaking MD5

Don't use hashes for passwords

Conclusion

Audible Recommendation

Implementing the Set Interface

The Comparison Model

Comparison Algorithms as Decision Trees

How Many Comparisons?

Minimum Height of a Binary Tree

Space Usage Problem

Choosing a Hash Function

The Division Method

Choosing a Random Hash Function

The hash function

Why Is Hashing necessary?

What Is Hashing?

Real-World Implementation

Hash Functions

Hashing Guidelines

Ways to Strengthen Hashes

What is hashing?

Enforcing unique keys

Databases

Storing items in an array

Mapping a key to an integer

Pigeonhole principle

The Hashing Function

Running time analysis

Multiplication in binary

Conclusion

Hashing Algorithms - Definition & Simple Explanation

Real World Hashing requirements

Hashing Demonstration with Linux - md5sum

Hash Collisions - Unfortunately, they can't be avoided

Hashing Algorithms: md5 sha sha1 sha2 sha224 sha256 sha384 sha512

Hashing

Hashing is a One-Way Trip

Hash Integrity

Uniqueness of Hashes

SHA-256 Hash Example

Password Hashing

Hash Randomization

Digital Signatures

Digital Signature Example

Verifying a Digital Signature

What is hashing?

What is a cryptographic hash function?

Quick Computation

How does hashing work?

Collision-resistant

What is concatenation?

What does all this stuff mean in blockchains?

How blockchains attain immutability?

Hashing Methods

Hash signature

Md5 Method

Base64

Salting Method

Message Authentication Code

Timed Hash

Counter Method

Key entropy

Brute Force Attack

Request Hashing

Request Mapping

Problems

Virtual Servers

Applications

Thank you!

Introduction

What is Hashing in Blockchain

Blockchain Hashing vs Encryption

Cryptocurrency Example

Secure Hashing Algorithm 256 (or SHA 256)

Characteristics of Cryptographic Hash Functions

How Blockchain Hashing Works

Blockchain and Hashing

What is Hashrate in Blockchain

Conclusion

Hashing

Hashing Algorithms

Hashing Algorithms

Cryptography in Action

Securing Network Traffic

How is Hashing done?

How does hashing work?

Configuration of hash algorithms

Working of a hash function

Applications of hash algorithm

Hashing What It Is

Why Hashing Is So Important

Hashing Starts with a Hash Function

Example of Where Hashing Can Be Used

Use Hashes

The Md5 Hashing Algorithm

Collision

Summarize with Hashing

Hashing Can Be Used To Verify Downloaded Data

Digital Signing or Digital Signatures

Introduction

What is hashing?

What is a hash table?

What is a hash function?

Some hash table applications

Hash table operations example

What is a collision?

Collision handling: Separate chaining

Collision handling: Open addressing

Can we have no collisions?

What is rehashing?

Is the hash function we made good?

Recap

Why would we use a hash table?

Space complexity analysi

Let's implement a hash table

Time complexity analysi

Load factor impact on time/space efficiency

Coding problem example: Two sum

Uniqueness and immutability of keys and values

Intro

Blender Analogy

Emphasis on output size remains the same

Example solidified with PowerShell

Example show different file sizes produce the same size hash

Differences between different hash types (MD5, SHA1, SHA256)

Hash Collisions

Handing and storing passwords with hashing

Cracking hashes/passwords

Outro