Tricks with Vegetables

Yoyo Tricks with AES

In this paper we present new fundamental properties of SPNs. These properties turn out to be particularly useful in the adaptive chosen ciphertext/plaintext setting and we show this by introducing for the first time key-independent yoyo-distinguishers for 3to 5-rounds of AES. All of our distinguishers beat previous records and require respectively 3, 4 and 2 data and essentially zero computatio...

Old dogs: new tricks, old tricks, or no tricks.

tively referred to as “old dogs.” In some instances, the designation may be a term of endearment: in others, a term of derision. Virtually every chairperson must face the dilemma of dealing with these senior staff members. His or her decision will be based primarily on how productive the senior radiologist is. I have had the unique opportunity to practice radiology over the past 27 years in bot...

Pain Tricks

Problems with the mapping of magic tricks

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Tricks with Hicks: The EASI Demand System

We invent Implicit Marshallian Demands, a new type of demand function that combines desirable features of Hicksian and Marshallian demand functions. We propose and estimate the Exact Af ne Stone Index (EASI) Implicit Marshallian Demand system. Like the Almost Ideal Demand (AID) system, EASI budget shares are linear in parameters given real expenditures. However, unlike the AID, EASI demands can...