Hash Generator
Generate cryptographic hashes (SHA-1, SHA-256, SHA-384, SHA-512). All processing happens in your browser.
Character count: 0
Generated Hashes:
SHA-1
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SHA-256
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SHA-384
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SHA-512
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About Hash Functions
Hash functions are one-way cryptographic algorithms that convert input data into a fixed-size string of characters. The same input always produces the same hash, but it's computationally infeasible to reverse the process.
SHA-1 Deprecation Notice
SHA-1 is considered cryptographically broken and should not be used for security purposes. Use SHA-256 or higher for secure applications.
Keyboard Shortcuts:
- Ctrl/Cmd + Enter - Generate hashes
Privacy: All hashing happens locally using the native crypto.subtle.digest() API.
No data is sent to any server.
About Cryptographic Hash Functions
A cryptographic hash function is a mathematical algorithm that converts input data of any size into a fixed-size string of characters, which appears random. Hash functions are deterministic, meaning the same input will always produce the same hash output.
Supported Algorithms:
- SHA-1 - 160-bit (deprecated for security use)
- SHA-256 - 256-bit (recommended)
- SHA-384 - 384-bit (highly secure)
- SHA-512 - 512-bit (maximum security)
Common Use Cases:
- Verify file integrity (checksums)
- Password storage (with salt)
- Digital signatures
- Data deduplication
- Blockchain and cryptocurrencies
- Git commit IDs
Hash Function Properties:
Deterministic: The same input always produces the same hash
One-way: Cannot reverse the hash to get the original input
Collision-resistant: Extremely unlikely for two different inputs to produce the same hash
Avalanche effect: Small input changes result in completely different hashes
Security Warning: SHA-1 is cryptographically broken and should not be used for security-sensitive applications. Use SHA-256 or higher for password hashing, digital signatures, and other security purposes. Also, never use hash functions alone for password storage - always use proper password hashing algorithms like bcrypt, scrypt, or Argon2 with salt.