# `•hash` — Hashing

`•hash data` gives the SHA-256 digest of `data` as 64 hexadecimal
digits, as tools such as `sha256sum` print it. Text is hashed as UTF-8,
and numbers as bytes. `alg •hash data` uses `"sha224"`, `"sha256"`,
`"sha384"` or `"sha512"`.

``` bpl
•hash "abc"   ⍝ "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
```

Errors: `DOMAIN` for an unknown algorithm, or byte values outside 0 to
255.