The XilSecure library is a library of security drivers that access the hardened cryptographic cores to support the AES-GCM 256-bit/128-bit engine, the RSA/ECC engine that supports RSA-4096, RSA-3076, RSA-2048 as well as ECDSA NIST P-384 and NIST P-521, and the SHA3/384 engine.
For more information, see Security.