Efficient Length Doubling From Tweakable Block Ciphers

IACR Trans. Symmetric Cryptol., Volume 2017, Issue 3, 2017, Pages 253-270.

Cited by: 3|Views23
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Abstract:

We present a length doubler, LDT, that turns an n-bit tweakable block cipher into an efficient and secure cipher that can encrypt any bit string of length [n..2n − 1]. The LDT mode is simple, uses only two cryptographic primitive calls (while prior work needs at least four), and is a strong length-preserving pseudorandom permutation if th...More

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