# CRYPTO_CERTIFICATE_KEY_USAGE_DIGITAL_SIGNATURE

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

Certificate key usage: digital signature.

```ds title="CRYPTO_CERTIFICATE_KEY_USAGE_DIGITAL_SIGNATURE"
const CRYPTO_CERTIFICATE_KEY_USAGE_DIGITAL_SIGNATURE: CryptoCertificateKeyUsageFlags
```

[language/library/src/crypto/binding/certificate.ds:89](https://github.com/destack-sh/destack/blob/main/language/library/src/crypto/binding/certificate.ds#L89)