Privacy-preserving token issuance and verification in Rust: unlinkable single-use credentials (VOPRF + blind RSA) with nullifier-based double-spend prevention and sybil-resistant admission gates (PoW, WebAuthn, vouching).
rust cryptography privacy hsm pkcs11 anti-abuse privacy-preserving nullifier sybil-resistance webauthn anonymous-credentials elliptic-curve-cryptography ellip voprf axum passkeys token-issuance blind-rsa double-spend-prevention
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Updated
Aug 25, 2026 - Rust