-
block_sized_key =
computeBlockSizedKey(
key, hash,
blockSize) o_
key_pad ←
block_
sized_
key xor [0x5c
blockSize] //
Outer padded key i_
key_pad ←
block_
sized_
key xor [0x36...
- In cryptography,
key size or
key length refers to the
number of bits in a
key used by a
cryptographic algorithm (such as a cipher).
Key length defines the...
-
algorithms accept two inputs: an
input block of
size n bits and a
key of
size k bits; and both
yield an n-bit
output block. The
decryption algorithm D is defined...
- that
requires space proportional to n to
compute the hash function, and it
becomes a
function of the
previous keys that have been inserted.
Several algorithms...
- is to
split the data into
blocks each
matching the cipher's
block size, and
encrypt each
block separately using the same
key. This
method is not secure...
- family, as
block ciphers such as AES are
defined for only
limited numbers of
input and
key sizes. A PRF is an
efficient (i.e.
com****ble in polynomial...
-
Triple DEA), is a symmetric-
key block cipher,
which applies the DES
cipher algorithm three times to each data
block. The 56-bit
key of the Data Encryption...
- Galois/Counter Mode (GCM) is a mode of
operation for symmetric-
key cryptographic block ciphers which is
widely adopted for its performance. GCM throughput...
-
block Feistel cipher with a 128-bit
key and a
suggested 64 rounds.
Several differences from TEA are apparent,
including a
somewhat more
complex key-schedule...
- Thus, the two are very
similar in structure. GOST has a 64-bit
block size and a
key length of 256 bits. Its S-boxes can be secret, and they
contain about...
