---
id: "sha224hash"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["cryptography"]
langs: ["common"]
quality: 75
url: "http://registry.apicrafter.io/datatype/sha224hash"
---

# SHA-224 hash (`sha224hash`)

> **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 SHA-224 hash function (SHA-2 family, 224 bits): a SHA-256 variant with different initial values and a truncated output. It is written as 56 hexadecimal digits. SHA3-224 digests 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]{56}$
```

## Examples

- `d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f` — SHA-224 hash of the empty string
- `23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7` — SHA-224 hash of the string 'abc'
- `d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42` (invalid example) — one hex digit short (55 instead of 56)

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/SHA-2>
- doc: <https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf>

## Quality

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

JSON: <http://registry.apicrafter.io/api/v1/datatypes/sha224hash.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/cryptography/sha224hash.yaml>