Browser-based ciphertext-policy ABE demo — FAME (Agrawal and Chase, CCS 2017) over Type-3 BLS12-381, access trees converted to LSSS/MSP, ABE as a KEM into HKDF-SHA-256 and AES-256-GCM. Two users whose attributes jointly satisfy the policy pool their keys and still fail to decrypt.
cryptography abe access-control hybrid-encryption attribute-based-encryption fame bls12-381 crypto-lab lsss pairing-based-cryptography ciphertext-policy collusion-resistance
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Updated
Sep 30, 2026 - TypeScript