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round-function
a function Φ(.,.) that transforms two binary strings of lengths L1 and L2 to a binary string of length L2 NOTE - it is used iteratively as part of a hash-function, where it combines a data string of length L1 with the previous output of length L2
source: ISO10118-1, 2000
a function Φ(.,.) that transforms two binary strings of length LΦ to a binary string of length LΦ. NOTE It is used iteratively as part of a hash-function, where it combines an 'expanded' data block of length LΦ with the previous output of length LΦ
source: ISO10118-4, 1998
function Ø(., .) that transforms two binary strings of lengths L1 and L2 to a binary string of length L2. NOTE — It is used iteratively as part of a hashfunction, where it combines a data string of length L1 with the previous output of length L2.
source: ISO9797-2, 2002
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