Browser-based proxy re-encryption demo — BBS98 (Blaze-Bleumer-Strauss 1998) ElGamal bidirectional, then AFGH (Ateniese-Fu-Green-Hohenberger, NDSS 2005) pairing-based on BLS12-381. Proxy and Bob collude under BBS98 and divide out Alice's private key; AFGH resists it, and neither can un-delegate.
cryptography delegation proxy-re-encryption elgamal key-recovery bls12-381 crypto-lab pairing-based-cryptography bbs98 afgh collusion-attack
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Updated
Sep 30, 2026 - TypeScript