Key revocation allows you to revoke a RSA primary or secondary public key. Key revocation can be used due to elapsed time of key use, or if there is an indication that the key is compromised. The primary and secondary key revocation is controlled by one-time programmable eFUSEs. AMD Secure Key Library is used for key revocation, allowing key revocation in fielded devices. Key revocation is discussed further in the Zynq UltraScale+ Device Technical Reference Manual (UG1085).