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Securely managing virtual card games just got a boost with protocols that can efficiently select and sort cards while preserving game integrity.
Cyclic equalizability, a concept relevant to card-based cryptography, boils down to having identical Parikh vectors.
Not all card shuffles are created equal: this work exposes a provable hierarchy of shuffle complexities in card-based cryptography, revealing fundamental limits on what can be achieved with simpler shuffling primitives.