* `otherCert` {X509Certificate}

* Returns: {boolean}

Checks whether this certificate was issued by the given `otherCert`.

Checks whether this certificate was potentially issued by the given `otherCert`

by comparing the certificate metadata.

This is useful for pruning a list of possible issuer certificates which have been

selected using a more rudimentary filtering routine, i.e. just based on subject

and issuer names.

Finally, to verify that this certificate's signature was produced by a private key

corresponding to `otherCert`'s public key use [`x509.verify(publicKey)`][]

with `otherCert`'s public key represented as a [`KeyObject`][]

like so

```js

if (!x509.verify(otherCert.publicKey)) {

throw new Error('otherCert did not issue x509');

}

```

### `x509.checkPrivateKey(privateKey)`

[`verify.update()`]: #verifyupdatedata-inputencoding

[`verify.verify()`]: #verifyverifyobject-signature-signatureencoding

[`x509.fingerprint256`]: #x509fingerprint256

[`x509.verify(publicKey)`]: #x509verifypublickey

[caveats when using strings as inputs to cryptographic APIs]: #using-strings-as-inputs-to-cryptographic-apis

[certificate object]: tls.md#certificate-object

[encoding]: buffer.md#buffers-and-character-encodings