# CRYPTO_CERTIFICATE_KEY_USAGE_KEY_AGREEMENT

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

Certificate key usage: key agreement.

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

[language/library/src/crypto/binding/certificate.ds:105](https://github.com/destack-sh/destack/blob/main/language/library/src/crypto/binding/certificate.ds#L105)