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# Complex Numbers : RSA Cipher and Summation

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A=1,B=2,C=3,D=4,E=5,........X=24,Y=25,Z=26
It is enciphered using the rule
35
R (m)=m (mod 91)
35

The resulting ciphertext is ( 73,14,23,73,23)
Verify the rule given satisfy the condition for an RSA cipher.

Using the repeated squaring technique decipher the ciphertext and find the message

Use mathematical induction to prove that
n
E 1/r(r+1)(r+2)=n(n+3)/4(n+1)(n+2) for n+1,2,3,.......
r-1

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Problem #1
According to the RSA cipher, we know . Then . The ...

#### Solution Summary

An RSA cipher is decoded. A summation is calculated. The solution is detailed and well presented.

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