AI RESEARCH
SpanKey: Dynamic Key Space Conditioning for Neural Network Access Control
arXiv CS.AI
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ArXi:2604.12254v1 Announce Type: cross SpanKey is a lightweight way to gate inference without encrypting weights or chasing leaderboard accuracy on gated inference. The idea is to condition activations on secret keys. A basis matrix $B$ defines a low-dimensional key subspace $Span(B)$; during