A block cipher transforms a fixed-length block of plaintext data into a block of ciphertext data of the same length. This transformation takes place under the action of a user-provided secret key. Decryption is performed by applying the reverse transformation to the ciphertext block using the same secret key. The fixed length is called the block size, and for many block ciphers, the block size is 64 bits.
What is RSA Cryptosystem?
Explain me Monoalphabetic and Polyalphabetic Cipher?
Tell me what is Cryptography?
Explain me types of Cryptosystems?
Explain components of a Cryptosystem?
Which one of the following algorithm is not used in asymmetric-key cryptography? A. RSA algorithm B. diffie-hellman algorithm C. electronic code book algorithm D. none of the mentioned
What is the key size in the S-AES algorithm? a) 16 bits b) 32 bits c) 24 bits d) None of the mentioned
For the cipher text 0000 0111 0011 1000 and Key 0110 1111 0110 1011, apply the Simplified AES to obtain the plaintext. The plain text is a) 0110 1001 0111 0001 b) 0110 1111 0110 1011 c) 0010 1001 0110 1011 d) 1111 0101 0111 1111
What is data encryption standard (DES)? A. block cipher B. stream cipher C. bit cipher D. none of the mentioned
In asymmetric key cryptography, the private key is kept by A. sender B. receiver C. sender and receiver D. all the connected devices to the network
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