Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question

Set up an RSA public-key cryptosystem using primes p = 91, q = 13 and a public exponent of 29 by finding the appropriate (positive) private exponent using the extended euclidean algorithm given the table below and identities:

what is the value of q3, s3 and W ?

ri = ri+1qi+1 + ri+2,          si+2 = si − qi+1si+1       and           ti+2 = ti − qi+1ti+1       si(a) +ti(b)=ri

i

ri

qi

si

ti

0

a

x

1

0

1

b

 

0

1

2

 

 

 

 

3

 

 

 

 

4

 

 

 

 

 

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