Simple schemes

Simple schemes for functional encryption of inner products. All implementations in this package are based on the reference paper by Abdalla et. al (see https://eprint.iacr.org/2015/017.pdf). The reference scheme offers selective security under chosen-plaintext attacks (s-IND-CPA security). More...

Files
file	ddh.h
	DDH scheme.
file	ddh_multi.h
	DDH multi input scheme.
file	lwe.h
	LWE scheme.
file	ring_lwe.h
	LWE scheme.

Detailed Description

Simple schemes for functional encryption of inner products. All implementations in this package are based on the reference paper by Abdalla et. al (see https://eprint.iacr.org/2015/017.pdf). The reference scheme offers selective security under chosen-plaintext attacks (s-IND-CPA security).

The reference scheme is public key, which means that no master secret key is required for the encryption.

For instantiation from the decisional Diffie-Hellman assumption (DDH), see struct ddh (and its multi-input variant ddh_multi, which is a secret key scheme, because a part of the secret key is required for the encryption).

For instantiation from learning with errors (LWE), see structs lwe and ring_lwe.