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Additional
block cipher
English Wikipedia - The Free Encyclopedia
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Block cipher
In
cryptography
, a
block cipher
is a
deterministic algorithm
operating on fixed-length groups of
bits
, called
blocks
, with an unvarying transformation that is specified by a
symmetric key
. Block ciphers are important
elementary component
s in the design of many
cryptographic protocols
, and are widely used to implement
encryption
of bulk data.
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