You can configure how the Key Agent presents RSA signatures in response to the Agent Identities Request. When
is enabled (the default), the agent sends only ssh-rsa and x509v3-sign-rsa signatures. When this option is unchecked the agent also sends SHA256 signatures (x509v3-rsa2048-sha256 and ssh-rsa-sha2-256@attachmate.com).To enable support for SHA256 Signatures
From the Key Agent
menu, uncheck .NOTE:Agent forwarding to some servers may not be supported when this option is unchecked because of the length of the reply to the list request.