### Some articles on *block ciphers, block cipher, cipher, ciphers, blocks, block*:

Generalizations - Tweakable

... Wagner have described a generalized version of

**Block Ciphers**... Wagner have described a generalized version of

**block ciphers**called "tweakable"**block ciphers**... A tweakable**block cipher**accepts a second input called the tweak along with its usual plaintext or ciphertext input ... The tweak, along with the key, selects the permutation computed by the**cipher**...Modern Cryptography - Symmetric-key Cryptography

... Symmetric key

... Symmetric key

**ciphers**are implemented as either**block ciphers**or stream**ciphers**... A**block cipher**enciphers input in**blocks**of plaintext as opposed to individual characters, the input form used by a stream**cipher**... The Data Encryption Standard (DES) and the Advanced Encryption Standard (AES) are**block cipher**designs which have been designated cryptography standards by the US government (though DES's ...One-way Compression Function - Construction From

... One-way compression functions are often built from

**Block Ciphers**... One-way compression functions are often built from

**block ciphers**...**Block ciphers**take (like one-way compression functions) two fixed size inputs (the key and the plaintext) and return one single output (the ciphertext) which is the same size as the input ... However, modern**block ciphers**are only partially one-way ...Block Size (cryptography)

... In modern cryptography, symmetric key

... In modern cryptography, symmetric key

**ciphers**are generally divided into stream**ciphers**and**block ciphers**...**Block ciphers**operate on a fixed length string of bits ... The length of this bit string is the**block**size ...Avalanche Effect

... effect refers to a desirable property of cryptographic algorithms, typically

... effect refers to a desirable property of cryptographic algorithms, typically

**block ciphers**and cryptographic hash functions ... In the case of quality**block ciphers**, such a small change in either the key or the plaintext should cause a drastic change in the ciphertext ... If a**block cipher**or cryptographic hash function does not exhibit the avalanche effect to a significant degree, then it has poor randomization, and thus a ...### Famous quotes containing the word block:

“Being dismantled before our eyes are not just individual programs that politicians cite as too expensive but the whole idea that society has a stake in the well-being of children down the *block* and the security of families on the other side of town. Whether or not kids eat well, are nurtured and have a roof over their heads is not just a consequence of how their parents behave. It is also a responsibility of society—but now apparently a diminishing one.”

—Richard B. Stolley (20th century)

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