SUCI 6G

Technical Explanation

To protect citizen privacy, a mobile device must never transmit its permanent identity (SUPI) in plaintext over the air. In 5G, devices encrypted the SUPI into a SUCI using classical elliptic curve cryptography. 6G SUCI upgrades this to post-quantum lattice-based encryption (ML-KEM). The device encrypts its identity using the home network's post-quantum public key, ensuring that hostile cellular interceptors cannot identify or track mobile users.

Key Functions

• Lattice-based post-quantum encryption concealing subscriber identity over the air
• Dynamic randomized ephemeral encryption ensuring every transmitted SUCI looks unique
• Complete mathematical prevention of cellular IMSI-catchers and Stingray tracking devices
• Zero linkability: eavesdroppers cannot correlate multiple transmissions to the same user
• Hardware-accelerated SUCI generation executing inside the device tamper-proof iSIM