seec

Documentation

Overview

Package SEEC implments the Static-Ephemeral Entropy Combination (SEEC) scheme abstract interface and some predefined implementations.

Index

• type GenKey
• type GenRand
  • func GenKeyPRFTupleHash(rng io.Reader, lambda int) (GenRand, error)
  • func GenKeyPRPAES(rng io.Reader, lambda int) (GenRand, error)
  • func GenKeyPassthrough(rng io.Reader, lambda int) (GenRand, error)

Types

type GenKey

type GenKey func(io.Reader, int) (GenRand, error)

GenKey is a SEEC instance constructor, that takes an entropy source and a security parameter (lambda).

type GenRand

type GenRand func(int) ([]byte, error)

GenRand is a keyed SEEC instance, that takes a length and returns the random entropy (using a randomly sampled r).

func GenKeyPRFTupleHash

func GenKeyPRFTupleHash(rng io.Reader, lambda int) (GenRand, error)

GenKeyPRFTupleHash constructs a new SEEC-PRF instance, backed by the provided entropy source, using TupleHash as the PRF, and lambda as the security strength in bits. If `rng` is nil, `crypto/rand.Reader` will be used.

func GenKeyPRPAES

func GenKeyPRPAES(rng io.Reader, lambda int) (GenRand, error)

GenKeyPRPAES constructs a new SEEC-PRP instance, backed by the provided entropy source, using AES as the PRP, and lambda as the security strength in bits. If `rng` is nil, `crypto/rand.Reader` will be used.

Warning: This uses EME (ECB-Mix-ECB) under the hood and requires that the output length of each GenRand call be a multiple of the AES block size.

func GenKeyPassthrough

func GenKeyPassthrough(rng io.Reader, lambda int) (GenRand, error)

GenKeyPassthrough constructs a new SEEC-Passthrough instance, backed by the provided entropy source. If `rng` is nil, `crypto/rand.Reader` will be used.