Examples of using Block cipher in English and their translations into Turkish
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It's a standard NSA block cipher algorithm.
Biclique cryptanalysis of MIBS-80 and PRESENT-80 block ciphers.
It's a standard NSA block cipher algorithm.- Yeah.
Symmetric-key encryption can use either stream ciphers or block ciphers.
It's a standard NSA block cipher algorithm.- Yeah.
Block ciphers operate on large blocks of digits with a fixed, unvarying transformation.
Many more modes of operation for block ciphers have been suggested.
KASUMI is a block cipher used in UMTS, GSM, and GPRS mobile communications systems.
Cryptographically secure pseudorandom number generators(CSPRNGs)can be built using block ciphers.
A common technique uses block ciphers and cryptographic hash functions.
Padding oracle attacks are mostlyassociated with CBC mode decryption used within block ciphers.
Many modern block ciphers are based on a construction proposed by Horst Feistel.
In cryptography,key whitening is a technique intended to increase the security of an iterated block cipher.
There are several schemes which use a block cipher to build a cryptographic hash function.
Padding oracle attacks allow the attacker togain knowledge of the plain text without attacking the block cipher primitive itself.
For example, 64-bit block ciphers like DES can be used to generate a keystream in output feedback(OFB) mode.
A newer version of Wi-Fi Protected Access, WPA2,uses the AES block cipher instead of RC4, in part for this reason.
Just as block ciphers can be used to build hash functions, hash functions can be used to build block ciphers.
Today, there is a palette of attack techniques against which a block cipher must be secure, in addition to being robust against brute force attacks.
For example the FIPS PUB 113 algorithm is functionally equivalent to ISO/IEC 9797-1 MACalgorithm 1 with padding method 1 and a block cipher algorithm of DES.
For example, the block cipher TEA splits the 128-bit key into four 32-bit pieces and uses them repeatedly in successive rounds.
For example, MISTY1 is a Feistel cipher using a three-round Feistel network in its round function, Skipjack is a modified Feistel cipher using a Feistel network in its G permutation, and Threefish(part of Skein)is a non-Feistel block cipher that uses a Feistel-like MIX function.
For example, if a 128-bit block cipher received separate 32-bit bursts of plaintext, three quarters of the data transmitted would be padding.
HMAC was approved in 2002 as FIPS 198, The Keyed-Hash Message Authentication Code(HMAC), CMAC was released in 2005 under SP800-38B,Recommendation for Block Cipher Modes of Operation: The CMAC Mode for Authentication, and GMAC was formalized in 2007 under SP800-38D, Recommendation for Block Cipher Modes of Operation: Galois/Counter Mode(GCM) and GMAC.
Block ciphers operate as important elementary components in the design of many cryptographic protocols, and are widely used to implement encryption of bulk data.
FIPS PUB 198-1"The Keyed-Hash MessageAuthentication Code(HMAC)"* ISO/IEC 9797-1"Mechanisms using a block cipher"* ISO/IEC 9797-2"Mechanisms using a dedicated hash-function"ISO/IEC 9797-1 and -2 define generic models and algorithms that can be used with any block cipher or hash function, and a variety of different parameters.
A block cipher consists of two paired algorithms, one for encryption, E, and the other for decryption, D. Both 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. .
Blowfish is a symmetric-key block cipher, designed in 1993 by Bruce Schneier and included in a large number of cipher suites and encryption products.
Most block cipher algorithms are classified as iterated block ciphers which means that they transform fixed-size blocks of plaintext into identical size blocks of ciphertext, via the repeated application of an invertible transformation known as the round function, with each iteration referred to as a round.
Many modern and also some old symmetric block ciphers are based on Feistel networks(e.g. GOST 28147-89 block cipher), and the structure and properties of Feistel ciphers have been extensively explored by cryptographers.