Solve the problem.
-Given the modulus n, the encrytion exponent e, and the plaintext M, use the RSA encrytion to find the ciphertext C.
$\begin{array}{ccc}
\hline \mathrm{n} & \mathrm{e} & \mathrm{M} \
\hline 161 & 7 & 8 \
\hline
\end{array}$

A) 128
B) 126
C) 129
D) 127

Question

Solve the problem.
-Given the modulus n, the encrytion exponent e, and the plaintext M, use the RSA encrytion to find the ciphertext C.
 $\begin{array}{ccc}
\hline \mathrm{n} & \mathrm{e} & \mathrm{M} \
\hline 161 & 7 & 8 \
\hline
\end{array}$

A) 128
B) 126
C) 129
D) 127

Quizplus · Accepted Answer

In RSA encryption, the ciphertext $C$ is calculated using the formula $C = M^e \mod n$. Plugging in the given values, we get $C = 8^7 \mod 161$. Calculating $8^7 = 2097152$ and then taking $2097152 \mod 161$ gives us $127$. Therefore, the correct ciphertext is $127$.

Solve the Problem neM16178\begin{array}{ccc}\hline \mathrm{n} & \mathrm{e} & \mathrm{M} \\\hline 161 & 7 & 8 \\\hline\end{array}n161​e7​M8​​

Solve the Problem $\begin{array}{ccc}\hline \mathrm{n} & \mathrm{e} & \mathrm{M} \\\hline 161 & 7 & 8 \\\hline\end{array}$