A tool that proves it. Detecting ROCA without fingerprint. "ECGS-RSA is a Python-based research tool for analyzing structural anomalies in RSA public keys using the Exact Centered Gram Synthesis (ECGS) statistical model. The software computes algebraic features from public RSA moduli and evaluates their deviation from a predefined reference model. It supports RSA public keys, X.509 certificates, digitally signed PDF documents, TLS endpoints, SSH host keys, and large public-key datasets. An optional ROCA fingerprint check is provided for independent comparison. The tool is intended for cryptographic research and statistical analysis of RSA key-generation characteristics. ECGS scores indicate structural deviations and should not be interpreted as proof of cryptographic vulnerabilities." Link to tool: https://www.researchgate.net/publication/415394576_ecgs-rsa-v014zip