Free online SHA256 hash generator. Generate secure SHA256 hashes from text. All processing happens locally in your browser. Ideal for data integrity checks.
Frequently Asked Questions
What is SHA-256?
SHA-256 (Secure Hash Algorithm 256-bit) is a cryptographic hash function that produces a fixed-size 256-bit (64 character) hash value. It is part of the SHA-2 family designed by the NSA.
Is SHA-256 secure?
Yes, SHA-256 is considered secure and is widely used in security applications including TLS/SSL certificates, password hashing (with salt), and blockchain (Bitcoin uses SHA-256).
What can I use SHA-256 for?
SHA-256 is used for data integrity verification, digital signatures, password hashing (with proper salting), cryptocurrency mining, and generating unique identifiers.
Can I reverse a SHA-256 hash?
No, SHA-256 is a one-way function. It is computationally infeasible to reverse the hash to obtain the original input.