Hash Generator

A hash generator converts input text into a fixed-size string of characters, which is typically a digest that is unique to the input. Common algorithms include MD5, SHA-1, and SHA-256.

Hashing is used for data integrity verification, password storage, and digital signatures. It ensures that data has not been altered.

You can also generate hashes directly in your terminal if you don't have access to a browser:

Mac/Linux:

• MD5: `echo -n 'text' | md5sum`
• SHA-256: `echo -n 'text' | sha256sum`

Windows (PowerShell):

• Get-FileHash: `Get-FileHash -Algorithm SHA256 file.txt`
• String Hash: `[BitConverter]::ToString((new-object Security.Cryptography.SHA256Managed).ComputeHash([Text.Encoding]::UTF8.GetBytes('text')))`

Note: Terminal commands often require exact syntax to avoid including newline characters which change the hash. Our tool takes care of this for you.

All hashing is performed locally in your browser. Your sensitive data is never transmitted to any server.

A hash collision occurs when two different inputs produce the exact same hash output. While mathematically possible, good cryptographic hash functions like SHA-256 make this extremely unlikely (practically impossible). Older algorithms like MD5 have known collision vulnerabilities, which is why they are no longer recommended for security-critical applications.

When storing passwords, simply hashing them is not enough due to 'Rainbow Table' attacks (precomputed tables of hashes for common passwords). To prevent this, developers add a unique random string called a 'salt' to each password before hashing it. This ensures that even if two users have the same password, their stored hashes will be different.

• SHA-256: The current industry standard for most security applications (SSL certificates, blockchain, password storage).
• SHA-512: More secure but slightly slower; useful for high-security needs.
• MD5: Fast but insecure; use only for non-critical checksums (e.g., verifying a file download).
• SHA-1: Deprecated; avoid for new security systems.