Samantha uses the Elgamal signature scheme with prime p = 6961 and primitive root g = 437. Her public verification key is A = 4250. Adam claims that Samantha has signed each of the document’s D = 1521, D’ = 1837, D” = 1614, and that the associated signatures are (S1, S2) = (4129, 5575), (S’1, S’2) = (3145, 1871), (S”1, S”2) = (2709, 2994). Which of these are valid signatures?
Samantha uses the Elgamal signature scheme with prime p = 6961 and primitive root g = 437. Her public verification key is A = 4250. Adam claims that Samantha has signed each of the document’s D = 1521, D’ = 1837, D” = 1614, and that the associated signatures are (S1, S2) = (4129, 5575), (S’1, S’2) = (3145, 1871), (S”1, S”2) = (2709, 2994). Which of these are valid signatures?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Samantha uses the Elgamal signature scheme with prime p = 6961 and primitive root g = 437. Her public verification key is A = 4250. Adam claims that Samantha has signed each of the document’s D = 1521, D’ = 1837, D” = 1614, and that the associated signatures are (S1, S2) = (4129, 5575), (S’1, S’2) = (3145, 1871), (S”1, S”2) = (2709, 2994). Which of these are valid signatures?
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