SHA-512 Hash
Generate the SHA-512 hash (512-bit digest) of any string. Cryptographically secure, optimized for 64-bit systems.
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About SHA-512 Hash
SHA-512 is the largest of the SHA-2 family, producing a 512-bit (128 hex character) digest. It's roughly twice as fast as SHA-256 on 64-bit processors and produces a much longer output, which is useful when you want a stronger collision resistance margin or a wider hash space.
When to use it
- High-throughput content fingerprinting on modern 64-bit hardware
- Long-lived archive checksums where collision resistance over decades matters
- Producing wider key material for KDF-style usage
- Cross-checking SHA-512 sums on a published download page
How it works
Input is encoded as UTF-8 and processed through SHA-512 in WebAssembly via hash-wasm. The 512-bit result is presented as 128 lowercase hex characters.
Examples
Hello, world!
c1527cd893c124773d811911970c8fe6e857d6df5dc9226bd8a160614c0cd963a4ddea2b94bb7d36021ef9d865d5cea294a82dd49a0bb269f51f6e7a57f79421
Frequently asked questions
- When should I prefer SHA-512 over SHA-256?
- On 64-bit systems where throughput matters, SHA-512 can be ~2× faster than SHA-256 because it operates on 64-bit words natively. When output size needs to be larger (for key derivation, for example), SHA-512 is also the natural choice.
- Is the output too long?
- 128 hex characters is a lot. For human inspection, SHA-256 is usually friendlier; SHA-512 is best in systems that consume the hash programmatically.