In modern cryptography, symmetric key ciphers are generally divided into stream ciphers and block ciphers. Block ciphers operate on a fixed length string...

Block size can refer to: Block (data storage), the size of a block in data storage and file systems. Block size (cryptography), the minimal unit of data...

In cryptography, a block cipher is a deterministic algorithm that operates on fixed-length groups of bits, called blocks. Block ciphers are the elementary...

In cryptography, a block cipher mode of operation is an algorithm that uses a block cipher to provide information security such as confidentiality or authenticity...

for a nonce. The IV size depends on the cryptographic primitive used; for block ciphers it is generally the cipher's block-size. In encryption schemes...

an additional block of zero bytes if the plaintext is already divisible by the block size.[citation needed] In public key cryptography, padding is the...

Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret"; and γράφειν graphein, "to write", or -λογία -logia, "study"...

A cryptographic hash function (CHF) is a hash algorithm (a map of an arbitrary binary string to a binary string with a fixed size of n {\displaystyle...

Bletchley Park • Blinding (cryptography) • Blind signature • Block cipher • Block cipher mode of operation • Block size (cryptography) • Blowfish (cipher) •...

it suitable for use in cryptography. It is also referred to as a cryptographic random number generator (CRNG). Most cryptographic applications require random...

Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption of...

modern applications, it has been highly influential in the advancement of cryptography. Developed in the early 1970s at IBM and based on an earlier design by...

larger than block size}}\\K&{\text{otherwise}}\end{cases}}\end{aligned}}} where H {\displaystyle \operatorname {H} } is a cryptographic hash function...

following tables compare general and technical information for a number of cryptographic hash functions. See the individual functions' articles for further information...

In cryptography, residual block termination is a variation of cipher block chaining mode (CBC) that does not require any padding. It does this by effectively...

In cryptography, MMB (Modular Multiplication-based Block cipher) is a block cipher designed by Joan Daemen as an improved replacement for the IDEA cipher...

In cryptography, a Feistel cipher (also known as Luby–Rackoff block cipher) is a symmetric structure used in the construction of block ciphers, named...

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...

processed through a cryptographic algorithm, can encode or decode cryptographic data. Based on the used method, the key can be different sizes and varieties...

Soviet and Russian government standard symmetric key block cipher with a block size of 64 bits. The original standard, published in 1989, did not give the...

and topical guide to cryptography: Cryptography (or cryptology) – practice and study of hiding information. Modern cryptography intersects the disciplines...

cryptographic hash of a data block, and every node that is not a leaf (called a branch, inner node, or inode) is labelled with the cryptographic hash of the labels...

In cryptography, a salt is random data fed as an additional input to a one-way function that hashes data, a password or passphrase. Salting helps defend...

In cryptography, a sponge function or sponge construction is any of a class of algorithms with finite internal state that take an input bit stream of any...

In cryptography, the EFF DES cracker (nicknamed "Deep Crack") is a machine built by the Electronic Frontier Foundation (EFF) in 1998, to perform a brute...

Elliptic-curve cryptography (ECC) is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. ECC...

potential security issues connected with the (today comparatively small) block size of 64 bits. On January 2, 1997, NIST announced that they wished to choose...

advances in cryptographic mathematics. The Twofish team made a similar statement about its cipher. MARS has a 128-bit block size and a variable key size of between...

supports a variety of block and key sizes. A block is always two words, but the words may be 16, 24, 32, 48 or 64 bits in size. The corresponding key...

In cryptography, the Iraqi block cipher was a block cipher published in C source code form by anonymous FTP upload around July 1999, and widely distributed...