Linux, write down the commands ## Decrypting a MessageTo decrypt the following ciphertext $ C $ and convert it back to a plain ASCII string, follow these steps:**Public Key:**- $ n = $ DCBFFE3E51F62E09CE7032E2677A78946A849DC4CDDE3A4D0CB81629242FB1A5**Private Key:**- $ d = $ 74D806F9F3A62BAE331FFE3F0A68AFE35B3D2E4794148AACBC26AA381CD7D30D**Ciphertext:**- $ C = $ 8C0F971DF2F3672B28811407E2DABBE1DA0FEBBBDFC7DCB67396567EA1E2493F### Python Command for Hex to ASCII ConversionUse the following Python command to convert a hex string back to a plain ASCII string:```python$ python -c 'print("4120746f702073656372657421".decode("hex"))'```**Output:**- A top secret!

Encryption and decryption is a process of encoding and decoding plain text into cipher text and cipher text into plain text.To decrypt a file encrypted with this setup using the highlighted command with your private key to decrypt the random key. public key file contains n series given in the question. private key file contains the d series given in the question. Get the public key:-openssl rsa -in certificate.pem -out publickey.pem -outform PEM -pubout Generate the random password file:-openssl rand -hex 64 -out key.bin Encrypt the file with the random key:-openssl enc -aes-256-cbc -salt -in largefile.pdf -out largefile.pdf.enc -pass file:./bin.key Encrypt the random key with the public keyfile:-openssl rsautl -encrypt -inkey publickey.pem -pubin -in key.bin -out key.bin.enc Decrypt the random key with our private key file:-openssl rsautl -decrypt -inkey privatekey.pem -in key.bin.enc -out key.bin Decrypt the large file with the random key:-openssl enc -d -aes-256-cbc -in largefile.pdf.enc -out largefile.pdf -pass file:./bin.key Some useful commands when one works with RSA keys:- openssl genrsa: Generate an RSA private key. openssl rsa: Manage RSA private keys. openssl rsautl: Encrypt and decrypt files with RSA keys. We generate a random file and use that as the key for the encryption process to encrypt a large file with symmetric crypto.The random file performs like a password.we encrypt the large file with a small password file as a password. Then we send the encrypted file and the encrypted key to the other side and then decrypt the key with the help of their public key, then use that key to decrypt the large file.