ClickHouse/tests/integration/test_ssh_keys_authentication/configs/users.xml

<clickhouse>
    <users>
        <john>
            <ssh_keys>
                <ssh_key>
                     <type>ssh-ed25519</type>
                     <base64_key>AAAAC3NzaC1lZDI1NTE5AAAAIDNf0r6vRl24Ix3tv2IgPmNPO2ATa2krvt80DdcTatLj</base64_key>
                 </ssh_key>
                <ssh_key>
                     <type>ecdsa-sha2-nistp256</type>
                     <base64_key>AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNxeV2uN5UY6CUbCzTA1rXfYimKQA5ivNIqxdax4bcMXz4D0nSk2l5E1TkR5mG8EBWtmExSPbcEPJ8V7lyWWbA8=</base64_key>
                 </ssh_key>
                <ssh_key>
                     <type>ssh-rsa</type>
                     <base64_key>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</base64_key>
                 </ssh_key>
            </ssh_keys>
        </john>
        <lucy>
            <ssh_keys>
                <ssh_key>
                     <type>ssh-ed25519</type>
                     <base64_key>AAAAC3NzaC1lZDI1NTE5AAAAILbX3cPhyeqaY3uP5UR45pS3GOMXEdv+E2obcbl6YpUQ</base64_key>
                 </ssh_key>
            </ssh_keys>
        </lucy>
    </users>
</clickhouse>