public boolean hasSignedSSHCallback(Callback[] callbacks) {
		if (callbacks != null) {
			for (int i = 0; i < callbacks.length; i++) {
				if (callbacks[i] instanceof SSHSignatureCallback) {
					SSHSignatureCallback sshCb = (SSHSignatureCallback) callbacks[i];
					return sshCb.isSigned();
				}
			}
		}
		return false;
	}
<code>SSHAuthenticationModule</code> provides SHA1-RSA and SHA1-DSA signature-based authentication
support using SSH public/private keys where user public keys are made available to the server.
Module makes use of a {@link SSHSignatureCallback} object to convey the signature request to a
client.
Ghidra/Features/GhidraServer/src/main/java/ghidra/server/security/SSHAuthenticationModule.java