AES Key CRC verification - AES Key CRC verification - 2026.1 English - UG643

Standalone Library Documentation: BSP and Libraries Document Collection (UG643)

Document ID
UG643
Release Date
2026-06-23
Version
2026.1 English

AES key is not user-readable. You can verify only by providing the CRC of the expected AES key. The following lists the parameters that helps in verifying the AES key:

Table 1. AES Key CRC verification
Parameter Name Description
XSK_EFUSEPL_CHECK_AES_KEY_CRC

Default = FALSE

TRUE performs CRC check of FUSE_AES with provided CRC value in macro XSK_EFUSEPL_CRC_OF_EXPECTED_AES_KEY. And result of CRC check is updated in the XilSKey_EPl instance parameter AESKeyMatched with either TRUE or FALSE.

FALSE CRC check of FUSE_AES will not be performed.
XSK_EFUSEPL_CRC_OF_EXPECTED_AES_KEY_CONFIG_ORDER_0 Default = XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS

CRC value of FUSE_AES with all Zeros.

Expected FUSE_AES key's CRC value of SLR config order 0 has to be updated in place of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS. For Checking CRC of FUSE_AES XSK_EFUSEPL_CHECK_AES_KEY_ULTRA macro is set be TRUE otherwise CRC check is performed. For calculation of AES key's CRC one can use u32 XilSKey_CrcCalculation(u8_Key) API.

For UltraScale, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x621C42AA(XSK_EFUSEPL_CRC_<br>FOR_AES_ZEROS).0

For UltraScale+, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x3117503A(XSK_EFUSEPL_CRC_FOR_AES_ZEROS_ULTRA_PLUS)
XSK_EFUSEPL_CRC_OF_EXPECTED_AES_KEY_CONFIG_ORDER_1 Default = XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS

CRC value of FUSE_AES with all Zeros. Expected FUSE_AES key's CRC value of SLR config order 1 has to be updated in place of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS.

For Checking CRC of FUSE_AES XSK_EFUSEPL_CHECK_AES_KEY_ULTRA macro must be TRUE otherwise CRC check is not performed. For calculation of AES key's CRC one can use u32 XilSKey_CrcCalculation(u8_Key) API.

For UltraScale, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x621C42AA(XSK_EFUSEPL_CRC_<br>FOR_AES_ZEROS).

For UltraScale+, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x3117503A(XSK_EFUSEPL_CRC_FOR_<br>AES_ZEROS_ULTRA_PLUS)

XSK_EFUSEPL_CRC_OF_EXPECTED_AES_KEY_CONFIG_ORDER_2 Default = XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS

CRC value of FUSE_AES with all Zeros.

Expected FUSE_AES key's CRC value of SLR config order 2 has to be updated in place of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS. For Checking CRC of FUSE_AES XSK_EFUSEPL_CHECK_AES_KEY_ULTRA macro is set to TRUE otherwise CRC check is not performed. For calculation of AES key CRC, use u32 XilSKey_CrcCalculation(u8_Key) API.

For UltraScale, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x621C42AA(XSK_EFUSEPL_CRC_FOR_AES_ZEROS).

For UltraScale+, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x3117503A(XSK_EFUSEPL_CRC_FOR_AES_ZEROS_ULTRA_PLUS)

XSK_EFUSEPL_CRC_OF_EXPECTED_AES_KEY_CONFIG_ORDER_3 Default = XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS

CRC value of FUSE_AES with all Zeros.

Expected FUSE_AES key's CRC value of SLR config order 3 has to be updated in place of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS. For Checking CRC of FUSE_AES XSK_EFUSEPL_CHECK_AES_KEY_ULTRA macro must be TRUE otherwise CRC check will not be performed. For calculation of AES key's CRC one can use u32 XilSKey_CrcCalculation(u8_Key) API.

For UltraScale, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x621C42AA(XSK_EFUSEPL_CRC_FOR_AES_ZEROS).

For UltraScale+, the value of XSK_EFUSEPL_AES_CRC_OF_ALL_ZEROS is 0x3117503A(XSK_EFUSEPL_CRC_FOR_AES_ZEROS_ULTRA_PLUS