______________ employs a text string as a key that is implemented to do a series of shifts on the plain-text.

Related MCQs

• In Playfair cipher, at first, a key table is produced. That key table is a 5 by 5 grid of alphabets which operates as the key to encrypt the plaintext.
• ____________ is a mono-alphabetic encryption code wherein each & every letter of plaintext is replaced by another letter in creating the cipher-text.
• In _______________ the plain-text is processed 1-bit at a time & a series of actions is carried out on it for generating one bit of cipher-text.
• A (n) ______ algorithm transforms ciphertext to plaintext.
• The ________________ has piece of the keyword that has the same length as that of the plaintext.
• n = 35; e = 5; C = 10. What is the plaintext (use RSA)?
• _________________ is the process or mechanism used for converting ordinary plain text into garbled non-human readable text & vice-versa.
• In _____________ a sequence of actions is carried out on this block after a block of plain-text bits is chosen for generating a block of cipher-text bits.
• In an RSA system the public key of a given user is e = 31, n = 3599. What is the private key of this user?
• Compute private key (d, p, q) given public key (e=23, n=233 ´ 241=56,153).