nQrux® Secure Boot enhances system security by enabling quantum-secure authenticated boot, crucial for verifying the authenticity and integrity of binary images during the processor boot sequence. The protection is rooted in a hybrid digital signature scheme that utilises both ECDSA and ML-DSA. ML-DSA digital signatures are designed to counter threats from quantum computing, while ECDSA provides a reliable fallback to guard against potential vulnerabilities in the newer quantum-resistant algorithms.