GPG $($GNU Privacy Guard$)$ is a software tool used to encrypt files, create digital signatures, and manage public and private keys. It's a part of the GNU Project and provides a free software alternative to the proprietary PGP $($Pretty Good Privacy$)$ software program.

Both GPG and PGP can use RSA $($Rivest$-$Shamir$-$Adleman$),$ one of the first public$-$key cryptosystems, for encrypting and decrypting messages and for digital signatures.

The security of RSA is based on the practical difficulty of factoring the product of two large prime numbers.

First, a pair of public and private Keys are generated as follows:

Choose two distinct largelprime numbers $p$ and $q.$

Compute $n=pq.$ This $n$ is used as the modulus for both the public and private keys.

Compute the totient $(n)=(p-1)(q-1).$

Choose an integer e such that $gcd(e,(n))=1dde-=1(mod(n))dmcc=m^e$modnmcm$=c^d$modnp$=11q=3n=113=33(n)=(11-1)(3-1)=20e=337=21-=1(mod20)e=3m=4c=4^3$mod$33=31m={31}^{17}$mod$33=4B_3$

Step $1.$ Select a case$-$sensitive word

Choose one word from the following list:

big

NOV

HOP

him

Step $2.$ Convert to ASCII Values

Convert each character of your selected word into its corresponding ASCII value in decimal. Refer to the ASCl$1$ table E$.$

Step $3.$ RSA Encryption

Visit the RSA Step$-$by$-$Step tool EFamiliarize yourself with the RSA encryption procedure. Keep all parameters at their default settings. If necessary, refresh the web page to ensure the parameters are reset to default values.

Step $4.$ Encrypt

ASCII Values Navigate to Step $3$: Encrypt on the web page. Enter the ASCII values $($denoted as $\text{'}m\text{'})$ one by one into the tool. Record the resultant encrypted value $(\text{'}$c$\text{'})$ for each ASCII value.

Step $5.$ Record the Three$-$Character Cipher Text

The resulting three$-$character cipher text is