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On the Round Security of Symmetric-Key Cryptographic Primitives
[chapter]
2000
Lecture Notes in Computer Science
We put forward a new model for understanding the security of symmetric-key primitives, such as block ciphers. The model captures the fact that many such primitives often consist of iterating simpler constructs for a number of rounds, and may provide insight into the security of such designs. We completely characterize the security of four-round Luby-Rackoff ciphers in our model, and show that the ciphers remain secure even if the adversary is given black-box access to the middle two round
doi:10.1007/3-540-44598-6_24
fatcat:4gd5uluiu5cibhb5voh52fvhpu