Cryptography Professor Jonathan Katz Midterm Exam — Solutions
نویسنده
چکیده
(a) Fix an encryption scheme Π for messages of length `(n) and an adversaryA, and consider the following experiment BWA,Π(n): i. A random key k ← {0, 1}n and message m ← {0, 1}`(n) are chosen. ii. A is given the ciphertext C ← Enck(m). iii. A outputs a pair (i, b), with i ∈ {1, . . . , `(n)} and b ∈ {0, 1}. The output of the experiment is 1 iff b = mi, where mi denotes the ith bit of m. We say Π is bitwise secure if for all pptA it holds that Pr[BWA,Π(n) = 1] ≤ 1/2+negl(n).
منابع مشابه
Improving performance in quantum mechanics with explicit incentives to correct mistakes
An earlier investigation found that the performance of advanced students in a quantum mechanics course did not automatically improve from midterm to final exam on identical problems even when they were provided the correct solutions and their own graded exams. Here, we describe a study, which extended over four years, in which upper-level undergraduate students in a quantum physics course were ...
متن کاملProblem Set 3 Midterm Exam
Solutions must be submitted at beginning of class on Wednesday, March 3, 2004. This is an open-book exam. Handwritten answers are fine as long as they are legible and organized. Please show all work. I've tried to leave space on this handout for your solutions. The midterm is worth 15% of your total grade.
متن کاملTitle of dissertation : ON FAIRNESS IN SECURE COMPUTATION
Title of dissertation: ON FAIRNESS IN SECURE COMPUTATION S. Dov Gordon, Doctor of Philosophy, 2010 Dissertation directed by: Professor Jonathan Katz Department of Computer Science and UMIACS Secure computation is a fundamental problem in modern cryptography in which multiple parties join to compute a function of their private inputs without revealing anything beyond the output of the function. ...
متن کاملCS 262A Midterm Exam SOLUTIONS
This exam is open book-feel free to consult any textual references you deem appropriate. These questions should be answerable with a combination of the class readings, class notes, and some thinking; there is no reason to consult any additional material. (Doing so may simply confuse things!) You are not allowed to discuss the questions with anyone! Submit your answers as a PDF file using the Mi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2011