public void setDomainSigningPrivateKey(String domainSigningPrivateKey) {
        this.domainSigningPrivateKey = domainSigningPrivateKey;
    }
<p>
[Bring Your Own DKIM] A private key that's used to generate a DKIM signature.
</p>
<p>
The private key must use 1024 or 2048-bit RSA encryption, and must be encoded using base64 encoding.
</p>

@param domainSigningPrivateKey
       [Bring Your Own DKIM] A private key that's used to generate a DKIM signature.</p>
       <p>
       The private key must use 1024 or 2048-bit RSA encryption, and must be encoded using base64 encoding.
aws-java-sdk-sesv2/src/main/java/com/amazonaws/services/simpleemailv2/model/DkimSigningAttributes.java