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Paper 2001/077
A Time-Memory Tradeoff Attack Against LILI-128
Markku-Juhani Olavi Saarinen
Abstract
In this note we discuss a novel but simple time-memory tradeoff attack against the stream cipher LILI-128. The attack defeats the security advantage of having an irregular stepping function. The attack requires $2^{46}$ bits of keystream, a lookup table of $2^{45}$ 89-bit words and computational effort which is roughly equivalent to $2^{48}$ DES operations.
Metadata
- Available format(s)
- PDF PS
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- stream ciphersnonlinear filter generatorstime-memory tradeoff
- Contact author(s)
- markku-juhani saarinen @ nokia com
- History
- 2001-10-16: revised
- 2001-09-10: received
- See all versions
- Short URL
- https://ia.cr/2001/077
- License
-
CC BY