The following table describes the Authentication Header bit fields for the Zynq® UltraScale+™ MPSoC device.
| Bit Field | Description | Notes |
|---|---|---|
| 31:20 | Reserved | 0 |
| 19:18 | SPK/User eFuse Select |
|
| 17:16 | PPK Key Select |
|
| 15:14 | Authentication Certificate Format | 00: PKCS #1 v1.5 |
| 13:12 | Authentication Certificate Version | 00: Current AC |
| 11 | PPK Key Type | 0: Hash Key |
| 10:9 | PPK Key Source | 0: eFUSE |
| 8 | SPK Enable | 1: SPK Enable |
| 7:4 | Public Strength |
|
| 3:2 | Hash Algorithm |
|
| 1:0 | Public Algorithm |
|