What is the art of breaking cryptosystems?

The process of using an algorithm to transform information into a format that cannot be read is...

Another term for trap-door function is _____.

The following are not polyalphabet cryptosystems...

_____ is the property that the sender and receiver are guaranteed that no third party can make any changes in the message during the transmission.

Suppose (n,d) = (55,3) is the private key of an RSA cryptosystem. If the received ciphertext is C = 49, what is the corresponding plaintext?

Which of the following is the private key of an RSA cryptosystem with public key (n,e) = (55,7)? Suppose p = 5 and q = 11.

Suppose the RSA cyrptosystem is used with public key (35,7). What is the corresponding cipher text when the plaintext "2" is sent?

Suppose an RSA cryptosystem is used to send the plaintext "4" with public key (n,e) = (33,3). What is the cipher text that corresponds to the message "4"?

What key is used if a Caesar cipher is used to encrypt the message "QUICK" to a plain text "TXLFN"

Who is the mathematician responsible for inventing the machine that helped break the German enigma code?

Which of the following satisfy the equivalence relation: 3x ≡ 1mod14?

If the received cipher text is C = 49, what is the corresponding plaintext (suppose (n,d) = (55,3) is the private key of an RSA cryptosystem)?

Who introduced the public key cryptosystem?

Which of the following ciphers uses distinct keys for encryption and decryption?