org.cryptimeleon.craco.kem

Interface KeyMaterial

All Superinterfaces:

org.cryptimeleon.math.hash.UniqueByteRepresentable

All Known Implementing Classes:

UniqueByteKeyMaterial

public interface KeyMaterial
extends org.cryptimeleon.math.hash.UniqueByteRepresentable

Used to derive a key that is encapsulated by KeyEncapsulationMechanism.encaps(EncryptionKey).

Key material is not by itself a good key, but is the result of some high entropy source (which is not necessarily close to the uniform distribution). You should apply a key derivation function to a KeyMaterial in order to receive a proper key (typically close to uniformly distributed bit strings).

Method Summary

Modifier and Type	Method and Description
int	getMinEntropyInBit() Returns the min entropy, of the key material's source X, i.e.

Methods inherited from interface org.cryptimeleon.math.hash.UniqueByteRepresentable

getUniqueByteRepresentation, updateAccumulator

Method Detail

getMinEntropyInBit

int getMinEntropyInBit()

Returns the min entropy, of the key material's source X, i.e. \(-\log_2(\max\{Pr[X = x]\})\), where the maximum is over all possible x.