Hash Generator (SHA-256, SHA-512)
Generate cryptographic hash digests using SHA-1, SHA-256, SHA-384, and SHA-512 algorithms via the browser's Web Crypto API.
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About this hash generator (sha-256, sha-512)
The hash generator creates SHA digests using the browser Web Crypto API. It is useful for checksums, cache keys, integrity comparisons, and examples where you need a repeatable digest of the same input.
Common uses
- Generate SHA-256 checksums for documentation or tests.
- Compare whether two copied strings produce the same digest.
- Create sample hashes for tutorials and fixtures.
Practical notes
Hashing is one-way and is not the same as encryption.
Do not use plain hashes for password storage; production systems need salted password hashing algorithms.
Frequently Asked Questions
What is a hash?
A cryptographic hash function converts any input data into a fixed-length output (hash/digest). The same input always produces the same output, but it's computationally infeasible to reverse the process or find two inputs with the same hash.
Which algorithm should I use?
SHA-256 is the most commonly recommended algorithm for security-sensitive applications. SHA-512 provides higher security at the cost of longer output. SHA-1 is deprecated for security use but still used for checksums.
Is this secure?
This tool uses the browser's native Web Crypto API (SubtleCrypto), which is the same implementation used by TLS and other security-critical systems. No data leaves your device.