What are the allowable values of word size in bit for RC5 algorithm? Explanation: Word sizes in bits for RC5 algorithm can be 16, 32 or 64.
What are the allowable values of word?
Integer values range from –128 to +127 for a byte integer, from –32,768 to +32,767 for a word integer, and from –231 to +231 – 1 for a doubleword integer. Unsigned integers are unsigned binary numbers contained in a byte, word, or doubleword.
What is the maximum size of the key in Blowfish algorithm?
The algorithm. Blowfish has a 64-bit block size and a variable key length from 32 bits up to 448 bits.
Which parameters affect RC5 algorithm?
Unlike many schemes, RC5 has a variable block size (32, 64 or 128 bits), key size (0 to 2040 bits) and number of rounds (0 to 255). The original suggested choice of parameters were a block size of 64 bits, a 128-bit key and 12 rounds.
Which RC5 mode will have the ciphertext longer than the plaintext by at most the size of a single RC5 block?
Cipher Block Chaining Pad mode
Which RC5 mode will have the ciphertext longer than the plaintext by at most the size of a single RC5 block? Explanation: The Cipher Block Chaining Pad mode produces a ciphertext output as such.
What is the word length of an 8-bit microprocessor?
4 bits to 64 bits
An 8-bit microprocessor can process 8-bit data at a time. The word length ranges from 4 bits to 64 bits depending upon the type of the microcomputer.
What is the size of the key in the DES algorithm Mcq?
In the DES algorithm, although the key size is 64 bits only 48bits are used for the encryption procedure, the rest are parity bits.
What is the maximum size of the key in Blowfish algorithm 0.5 marks?
What is the maximum size of the key in blowfish algorithm? Explanation: The maximum size of the key in blowfish algorithm is 56 bytes or 448 bits.
What is W 6 in AES when inputs key of size 128 bits with all zeros?
Explanation: Applying the key algorithm we get, w(0) = {00 00 00 00}; w(1) = {00 00 00 00}; w(2) = {00 00 00 00}; w(3) = {00 00 00 00}; w(4) = {62 63 63 63}; w(5) = {62 63 63 63}; w(6) = {62 63 63 63}; w(7) = {62 63 63 63}.
How many subkeys are in Blowfish algorithm?
18 subkeys{P[0]… P[17]} are needed in both encryption as well as decryption process and the same subkeys are used for both the processes. These 18 subkeys are stored in a P-array with each array element being a 32-bit entry.
What type of encryption is RC5?
RC5 is a symmetric key block encryption algorithm designed by Ron Rivest in 1994. It is notable for being simple, fast (on account of using only primitive computer operations like XOR, shift, etc.) and consumes less memory. RC5 is a block cipher and addresses two word blocks at a time.
What is RC5 encryption used for?
RC5 Block Cipher
This is also called an electronic codebook mode. It encrypts input blocks of a fixed size which is of 2w bits into a ciphertext block of the same length.
What primitive operations are used in RC5?
The encryption routine is based on three primitive operations: integer addition, bitwise XOR- (exclusive-or) and variable rotation operations.
What is the seed length Seedlen length for AES 192?
What is the Seed length (seedlen) length for AES-192 ? Explanation: Seed length = Output Block Length + Key Length = 128 + 192. 10.
What is the key size that is used for encryption by data encryption scheme DES algorithm?
56-bit
Data Encryption Standard (DES): The DES encryption algorithm is a “block cipher” that encrypts information in blocks of 64 bits (8 bytes). Using a 56-bit key, DES encrypts each block in 16 identical rounds.
What are the limitation of CBC?
limitations of reference ranges for the CBC
These include iron deficiency, thalassaemias, medication, alcohol and minor infections. In addition there are ethnic differences in some parameters, differences between males and females and differences in pregnancy.
What is the size of a word in a 32 bit computer?
4 bytes
Data structures containing such different sized words refer to them as: WORD (16 bits/2 bytes) DWORD (32 bits/4 bytes) QWORD (64 bits/8 bytes)
What is the word length of 32 bit microprocessor?
32
A 32-bit microprocessor has the word length equal to 32 bit.
What is the word length of an 8-bit microprocessor Mcq?
7. What is the word length of an 8-bit microprocessor? Explanation: At a time, an 8-bit CPU can process 8 bits of data. Depending on the type of microcomputer, the word length might range from 4 to 64 bits.
What is Data Encryption Standard DES * Mcq?
What is data encryption standard (DES)? Explanation: DES is a symmetric key block cipher in which the block size is 64 bits and the key size is 64 bits. It is vulnerable to some attacks and is hence not that popularly used. Take Computer Networks Practice Tests – Chapterwise!
What is the size of key in SDS algorithm?
10 bits
1. What is the size of the key in the SDES algorithm? Explanation: The size of the key in the SDES algorithm is 10 bits.