Free Online Hash Generator & Cryptographic Hash Tool

Generate cryptographically secure hashes with advanced security features and verification tools

Text to Hash

Hash Algorithm

Salt (Optional)

Adds randomness to prevent rainbow table attacks

Pepper (Optional)

Additional secret for enhanced security

Iterations (PBKDF2)

Number of iterations for key stretching

Output Length (PBKDF2)

Length of the generated hash in bytes

Output Format

Generated Hash

Security Analysis

Security Level:

Hash Length: 0 characters

Entropy: 0 bits

Bits of Security: 0 bits

Rainbow Table Check

Status:

Details: -

Algorithm Information

Algorithm: -

Description: -

Speed: -

Use Case: -

Collision Resistance: -

Recommendation: -

Parameters Used

Salt: -

Pepper: -

Iterations: -

Format: -

Verify Hash

Original Text

Hash to Verify

Hash Algorithm

Generate Salt

Salt Length

Length of the generated salt

Salt Type

Compare Hashes

First Hash

Second Hash

Comparison Method

Online Hash Generator

What is a Hash Function?

A cryptographic hash function is a mathematical algorithm that takes an input (or 'message') and returns a fixed-size string of bytes. The output is typically a 'digest' that is unique to the unique values of the input data.

Key Properties:

Deterministic: Same input always produces the same output
Fast Computation: Hash can be computed quickly
pre-image resistance
collision resistance
avalanche effect

Use Cases:

Password Storage: Secure storage of user passwords
Digital Signatures: Verifying data integrity
File Integrity: Checking if files have been modified
Blockchain: Creating unique identifiers for blocks
API Security: Message authentication and verification
Data Deduplication: Identifying duplicate files

Security Best Practices:

Use strong algorithms (SHA-256, SHA-3, Argon2)
Always use salt for password hashing
Avoid deprecated algorithms (MD5, SHA-1)
Use appropriate iteration counts
Store hashes securely