A prompting protocol permits users to securely retrieve secrets with greater entropy than passwords. The retrieved user secrets can have enough entropy to be used to derive cryptographic keys.

The gossip problem, in which information (known as secrets) must be shared among a certain number of agents using the minimum number of calls, is of interest in the conception of communication networks and protocols. We extend the gossip problem to arbitrary epistemic depths. For example, we may require not only that all agents know all secrets but also that all agents know that all agents know...

We consider the problem of answering queries against a knowledge base (KB) using secrets, whenever it is possible to do so without compromising secrets. We study query answering against EL knowledge bases. We provide a polynomial time algorithm that, given an EL KB Σ, a set S of secrets to be protected and a query q or the form C(a) or r(a, b), outputs “Yes” whenever Σ q and the answer to q, to...

Note: The last sentence on page 3 is not entirely accurate, in that only the number of multiplications decreases by a factor of j; the number of squarings is unaaected. Abstract. Consider a polynomial-time prover holding a set of secrets. We describe how the prover can rapidly demonstrate any satissable boolean formula for which the atomic propositions are relations that are linear in the secre...

be hypothesised that adaptation to pollinators has been a driving force behind the diversification of some of the major elements of the southern African flora, " Johnson writes. Southern African flowers are known to be attractive to a range of species from long-probscid flies, oil-bees, hawkmoths, butterflies, birds and rodents. Many of these pollination interactions have been characterised in ...

-Evidence is presented that microscopic tumours (of a transplantable murine mammary carcinoma, M8013X) grow faster than larger, palpable, tumours. Microscopic tumours are also more radiosensitive than larger tumours. The decrease in radiosensitivity in larger tumours is prevented to a large extent by misonidazole, which has no significant effect on the radiosensitivity of microscopic tumours. T...

As a student of anesthesia, I often find myself browsing the local medical bookstore for new and informative anesthesia texts; texts that are not only concise in the review of subject matter, but that also offer the advantage of being pleasurable to read. In December of 1995, while studying for my preparatory oral exams, I overheard a few ofmy colleagues discussing a new anesthesia text, a text...

People sometimes require very strong passwords for high-value accounts (e.g., master passwords for password managers and encryption keys), but often cannot create these strong passwords. Assigning them provably strong secrets is one solution, and prior work has shown that people can learn these assigned secrets through rote learning, though learning the secrets takes some time and they are quic...