1 Preface 1. z||y is concatenation of two strings. 2. We say that two “families" of distributions {D1,n, D2,n} over finite do- main D are not computationally distinguishable if for every polynomial adversary A there exists a negligible function e(n) such that for every n holds: |Pr[A(D1,n) = 1] – Pr[A(D2,n) = 1]| < «(n) For example, D1m is G(Um) and D2,n = U(m) where G is a PRG with expansion function l(n) 2 Questions 2.1 Q1 For this question, every encryption scheme satisfies complete correctness. Security is for a single message.
1 Preface 1. z||y is concatenation of two strings. 2. We say that two “families" of distributions {D1,n, D2,n} over finite do- main D are not computationally distinguishable if for every polynomial adversary A there exists a negligible function e(n) such that for every n holds: |Pr[A(D1,n) = 1] – Pr[A(D2,n) = 1]| < «(n) For example, D1m is G(Um) and D2,n = U(m) where G is a PRG with expansion function l(n) 2 Questions 2.1 Q1 For this question, every encryption scheme satisfies complete correctness. Security is for a single message.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
Transcribed Image Text:2.1.3 C
We will define a variation of OTP with M = {0,1}10,C = {0,1}", K =
0,110 Where the encryption algorithm is defined as:
S (me k, 1) if k É {0!°, 1°}
| (m,0)
Enc(k, m)
otherwise
![1 Preface
1. a||y is concatenation of two strings.
2. We say that two “families" of distributions {D1,n, D2,n} over finite do-
main D are not computationally distinguishable if for every polynomial
1
adversary A there exists a negligible function e(n) such that for every
n holds:
|Pr[A(D1,n) = 1] – Pr[A(D2,n) = 1]| < e(n)
For example, D1,n is G(Un) and D2n = U«n) where G is a PRG with
expansion function 1(n)
2 Questions
2.1 Q1
For this question, every encryption scheme satisfies complete correctness.
Security is for a single message.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F17c0a2d5-2a3c-456c-a9f6-0cebe330b5c2%2Ffa66517f-8305-46cb-a034-13416101ac13%2F7dhga8g_processed.png&w=3840&q=75)
Transcribed Image Text:1 Preface
1. a||y is concatenation of two strings.
2. We say that two “families" of distributions {D1,n, D2,n} over finite do-
main D are not computationally distinguishable if for every polynomial
1
adversary A there exists a negligible function e(n) such that for every
n holds:
|Pr[A(D1,n) = 1] – Pr[A(D2,n) = 1]| < e(n)
For example, D1,n is G(Un) and D2n = U«n) where G is a PRG with
expansion function 1(n)
2 Questions
2.1 Q1
For this question, every encryption scheme satisfies complete correctness.
Security is for a single message.
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