feat: implement zero-knowledge deck with commitments and VRF proofs #33
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Add cryptographic primitives for trustless poker: - Card commitments: SHA256(card || salt) for tamper-proof dealing - VRF shuffle proofs: Verifiable random function for provably fair shuffles - Player-encrypted hole cards: ECDH-based encryption so only players can see their cards - Merkle proofs: Efficient verification of card inclusion in deck - Threshold VRF support: Preparation for multi-validator distributed randomness This eliminates the need to trust the server for: 1. Fair shuffling (VRF proves randomness is deterministic from block hash) 2. Card integrity (commitments prove cards weren't changed after shuffle) 3. Card privacy (encrypted hole cards can only be decrypted by the player)
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Add cryptographic primitives for trustless poker:
This eliminates the need to trust the server for: