--- id: "sha256hash" kind: "datatype" status: "stable" is_pii: false categories: ["cryptography", "software"] langs: ["common"] aliases: ["sha256"] quality: 95 url: "http://registry.apicrafter.io/datatype/sha256hash" --- # SHA-256 hash (`sha256hash`) Digest of the SHA-256 hash function (SHA-2 family, 256 bits), widely used for file checksums, content addressing and digital signatures. It is written as 64 hexadecimal digits. Other 256-bit digests (SHA3-256, 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), Software development (software) - Countries: global - Languages: Common to most languages (common) - Classification: identifier - Former IDs: `sha256` ## Detection Regular expression (Python `re`): ``` ^[0-9a-fA-F]{64}$ ``` ## Examples - `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855` โ€” SHA-256 hash of the empty string - `ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad` โ€” SHA-256 hash of the string 'abc' - `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b85` (invalid example) โ€” one hex digit short (63 instead of 64) ## Mappings - autotype: `sha256` - fta: `HASH.SHA256_HEX` - schema_org: `sha256` ## Metacrafter rules 3 rules: 1 match the field name, 2 match values. - `sha256hash` (data, `basic/crypto.yaml`) - `sha256hash_by_field` (field, `basic/crypto.yaml`) - `sha256hashbyvalue` (data, `common/software.yaml`) ## Supported by tools - `autotype` - `fta` - `metacrafter` - `metacrafterpro` ## Sources - wikipedia: - doc: ## Quality Score 95/100. Missing: translation. JSON: ยท Edit: