# CRYPTO_KEY_USAGE_DERIVE_BITS

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

Key usage: derive bits.

```ds title="CRYPTO_KEY_USAGE_DERIVE_BITS"
const CRYPTO_KEY_USAGE_DERIVE_BITS: CryptoKeyUsageFlags
```

[language/library/src/crypto/binding/algorithm.ds:207](https://github.com/destack-sh/destack/blob/main/language/library/src/crypto/binding/algorithm.ds#L207)