| digest | String | The digest value that will be signed by the smart credential. | [optional] |
| digestHashAlg | String | The hashing algorithm that will be used to sign the digest value. It must be one of the values "SHA-1", "SHA-224", "SHA-256", "SHA-384", "SHA-512". | [optional] |
| digestKey | DigestKeyEnum | Specify which key on the smart credential is used to sign the digest. If not specified it defaults to PIV_AUTHENTICATION. | [optional] |
| summary | String | The smart credential push signature challenge that appears in the user's mobile application. | [optional] |