---
id: "sha3_256hash"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["cryptography"]
langs: ["common"]
quality: 75
url: "http://registry.apicrafter.io/datatype/sha3_256hash"
---

# SHA3-256 hash (`sha3_256hash`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Digest of the SHA3-256 hash function (SHA-3 family, FIPS 202, 256 bits). It is written as 64 hexadecimal digits. SHA3-256 pads its input differently from the original Keccak-256 used by Ethereum, so the two give different digests of the same data. Other 256-bit digests (SHA-256, Keccak-256, BLAKE2b-256, BLAKE3 and Streebog-256) have the same length, so the value alone does not tell them apart: use the field name or context.

- Parent datatype: `hash`
- Personal data (PII): no
- Categories: Cryptographic identifiers (cryptography)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[0-9a-fA-F]{64}$
```

## Examples

- `a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a` — SHA3-256 hash of the empty string
- `3a985da74fe225b2045c172d6bd390bd855f086e3e9d525b46bfe24511431532` — SHA3-256 hash of the string 'abc'
- `a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434` (invalid example) — one hex digit short (63 instead of 64)

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/SHA-3>
- doc: <https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf>

## Quality

Score 75/100. Missing: mapping (Wikidata, Schema.org, ...), translation, detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/sha3_256hash.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/cryptography/sha3_256hash.yaml>