DSA (1024 bits/2048 bits/3072 bits)ECDSA (P256, P384, P521)Certificate signature algorithm SHA1-RSA, SHA256-RSA, SHA384-RSA*3, SHA512-RSA*3, MD5-RSA, MD2-RSA, ECDSA-SHA1, ECDSA-SHA256, ECDSA-SHA384, or ECDSA-SHA512Certificate thumbprint algorithm SHA1*1 Requirements for the certificate contained in a key pair are pursuant to CA certificates.*2 Not supported when the operating system of the device the machine communicates with is Windows 8/10/Server 2012.Encrypted communication may also be unavailable with other Windows versions depending on the program update status.*3 SHA384-RSA and SHA512-RSA are available only when the RSA key length is 1024 bits or more.● The machine does not support use of a certificate revocation list (CRL).Security309