fss::prp::Aes128Feistel Class Reference

Small-domain AES-128 Feistel PRP for Cuckoo hashing. More...

Public Member Functions
__uint128_t	Permu (int4 seed, __uint128_t x, __uint128_t domain)
	Small-domain PRP on [0, domain) using 4-round Feistel + cycle-walking.

Detailed Description

Small-domain AES-128 Feistel PRP for Cuckoo hashing.

This backend is host-only because it uses OpenSSL. It satisfies Permutable and is intended for VDMPF setup paths that need a permutation over a compact integer domain.

Member Function Documentation

Permu()

__uint128_t fss::prp::Aes128Feistel::Permu ( int4  seed, __uint128_t  x, __uint128_t  domain  )

inline

Small-domain PRP on [0, domain) using 4-round Feistel + cycle-walking.

Host-only.

Parameters

seed	16-byte PRP key.
x	Input in [0, domain).
domain	Domain size. Must be >= 2.

Returns

Output in [0, domain).

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The documentation for this class was generated from the following file:

• include/fss/prp/aes128_feistel.cuh