The paper gives linear-algebraic conditions for solving difference and linear-form equations over feedback-based bijective extensions of non-linear functions, claiming exact parameter-space characterizations and bounds under composition.
Vectorial boolean functions for cryptography
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Feedback linearly extended discrete functions
The paper gives linear-algebraic conditions for solving difference and linear-form equations over feedback-based bijective extensions of non-linear functions, claiming exact parameter-space characterizations and bounds under composition.