Turn a $5 Raspberry Pi RP2350 board into an open-source hardware passkey: WebAuthn/FIDO2 logins, ssh & git signing, OpenPGP, PIV, TOTP. Rust firmware, no_std.
fido-u2f cryptography firmware pgp fido authenticator post-quantum-cryptography piv ccid smart-card webauthn opengpg embedded-rust fido2 pqc security-key raspberry-pi-pico passkeys rp2350
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Updated
Sep 2, 2026 - Rust