Interactive Hashing Demo

See hash functions in action and explore the avalanche effect

Educational Notice

This demo uses simplified hash implementations for educational purposes. For real-world applications, use established cryptographic libraries with proper implementations of SHA-256, SHA-3, etc.

Input Text

Enter text to hash:

Input length: 11 characters

Quick presets:

Hash Results

Simple Hash

Basic demonstration hash (32-bit)

8 characters

Computing...

DJB2 Hash

Classic string hash algorithm

8 characters

Computing...

FNV Hash

Fowler-Noll-Vo hash function

8 characters

Computing...

MD5-like

Simulated MD5 output (demo only)

32 characters

Computing...

SHA-256-like

Simulated SHA-256 output (demo only)

64 characters

Computing...

Avalanche Effect Demonstration

Compare how small changes in input create dramatically different outputs:

Input 1: "Hello World"

Input 2: "Hello world" (lowercase 'w')

Notice:

Changing just one letter (W → w) completely changes the entire hash output. This is the avalanche effect - a fundamental property of good hash functions.

Hash Function Properties

Properties Demonstrated

Deterministic: Same input = same output
Fixed Size: Output length constant
Avalanche Effect: Small change = big difference
Fast Computation: Quick to calculate

Real Implementation Notes

Security Note: This demo shows educational hash functions. Production systems should use:

SHA-256, SHA-3 for general hashing
bcrypt, scrypt, Argon2 for passwords
HMAC for message authentication
Established cryptographic libraries

Go Back

Return to the main lesson to review concepts.

Hash Algorithms Lesson

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