English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

A secret key can be used to conceal information from an eavesdropper duringcommunication, as in Shannon's cipher system. Most theoretical guarantees ofsecrecy require the secret key space to grow exponentially with the length ofcommunication. Here we show that when an eavesdropper attempts to reconstructan information sequence, as posed in the literature by Yamamoto, very littlesecret key is required to effect unconditionally maximal distortion;specifically, we only need the secret key space to increase unboundedly,growing arbitrarily slowly with the blocklength. As a corollary, even with asecret key of constant size we can still cause the adversary arbitrarily closeto maximal distortion, regardless of the length of the information sequence.

Secrecy Is Cheap if the Adversary Must Reconstruct