# CRYPTO_KEY_USAGE_SIGN

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

Key usage: sign.

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

[language/library/src/crypto/binding/algorithm.ds:189](https://github.com/destack-sh/destack/blob/main/language/library/src/crypto/binding/algorithm.ds#L189)