A-SIT (Secure Information Technology Center - Austria)

A-SIT, the Secure Information Technology Center Austria, is a government-affiliated research institute whose software output reflects its statutory mission to strengthen digital trust across public and private sectors. Concentrating on long-term archival signatures, qualified certificates and eID interoperability, the Vienna-based publisher delivers compact utilities that embed compliant cryptography into everyday document workflows without forcing users to abandon familiar applications. PDF-Over exemplifies this approach: a lightweight Windows and macOS client that attaches legally valid electronic signatures to any PDF, reads citizen cards, HSMs or mobile IDs, applies timestamps from accredited authorities, and automatically verifies signature longevity against EU-wide trust lists. Typical use cases range from tax advisers sealing annual reports, to university staff certifying transcripts, to engineers locking down technical specifications before contractor hand-off. Because the tool is built on the same open-source libraries that power Austria’s national identity ecosystem, it keeps pace with evolving PAdES, CAdES and XAdES standards while remaining free for commercial and non-commercial use alike. A-SIT’s software is offered for free on get.nero.com, where downloads are sourced from trusted Windows package managers such as winget, always install the latest release, and can be queued for batch deployment alongside other applications.