Q. The method of reverting the encrypted text which is known as cipher text to its original form i.e. plain text is known as ________________

View solution

Q. Which of the following is not the primary objective of cryptography?

View solution

Q. Cryptography offers a set of required security services. Which of the following is not among that 4 required security services?

View solution

Q. A cryptosystem is also termed as ______________

View solution

Q. ______________ is the mathematical procedure or algorithm which produces a cipher-text for any specified plaintext.

View solution

Q. _______________ takes the plain text and the key as input for creating cipher-text.

View solution

Q. ____________________ is a mathematical algorithm that produces a unique plain text for a given cipher text along with a decryption key.

View solution

Q. A set of all probable decryption keys are collectively termed as ____________

View solution

Q. Encryption-decryption in cryptosystem is done in ______ ways.

View solution

Q. In _____________________ same keys are implemented for encrypting as well as decrypting the information.

View solution

Q. In __________________ 2 different keys are implemented for encrypting as well as decrypting that particular information.

View solution

Q. A set of all probable decryption keys are collectively termed as key space.

View solution

Q. ____________ is a mono-alphabetic encryption code wherein each & every letter of plain-text is replaced by another letter in creating the cipher-text.

View solution

Q. _____________ is the concept that tells us about the replacement of every alphabet by another alphabet and the entire series gets ‘shifted’ by some fixed quantity.

View solution

Q. ________________ is a cipher formed out of substitution where for a given key-value the cipher alphabet for every plain text remains fixed all through the encryption procedure.

View solution

Q. 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.

View solution

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

View solution

Q. The ________________ has piece of the keyword that has the same length as that of the plaintext.

View solution

Q. 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.

View solution

Q. 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.

View solution