Defeating Satellite Spoofing with Galileo’s Encryption
Galileo, Europe's global navigation satellite system, has successfully demonstrated its first cryptographically secured position fix under active spoofing conditions. The system utilizes a Signal Authentication System that encrypts spreading codes to allow receivers to verify the authenticity of satellite signals. This breakthrough was confirmed during the Jammertest event in Norway, where the European Space Agency maintained a stable lock despite interference attempts.
- ▪Galileo's Signal Authentication System encrypts signal spreading codes with a regularly changing secret key to prevent spoofing.
- ▪Receivers download encrypted codes in advance and use a separate decryption key transmitted by the satellite to verify the signal.
- ▪The European Space Agency successfully tested this technology at the Jammertest event in Andøya, Norway.
- ▪Most other GNSS systems, including GPS, currently lack verification measures and remain vulnerable to high-power false signals.
- ▪The demonstrated method could potentially be extended to other global navigation satellite systems in the future.
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| Original publisher | Hackaday |
| Canonical URL | https://hackaday.com/2026/09/27/defeating-satellite-spoofing-with-galileos-encryption/ |
| Publication time | Sun, 27 Sep 2026 20:00:00 +0000 |
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Defeating Satellite Spoofing With Galileo’s Encryption No comments by: Aaron Beckendorf September 27, 2026 Title: Copy Short Link: Copy Considering how important it is for everything from navigation to keeping clocks in sync, satellite navigation systems are surprisingly vulnerable to a variety of attacks, ranging from simple jamming to more sophisticated spoofing attacks. This may be changing, though, as Galileo, Europe’s GNSS, recently demonstrated its first cryptographically-secured position fix under spoofing conditions.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Hackaday.
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