# CryptoKdfBits

`import { CryptoKdfBits } from "destack:crypto/binding";`

Key derivation raw byte request.

```ds title="CryptoKdfBits"
export struct CryptoKdfBits<'a> {
    kdf: CryptoKdf<'a>;
    length: uint32;
}
```

[language/library/src/crypto/binding/kdf.ds:149:154](https://github.com/destack-sh/destack/blob/main/language/library/src/crypto/binding/kdf.ds#L149-L154)

## Members

### `kdf: CryptoKdf<'a>`

Key derivation.

### `length: uint32`

Output length in bytes.