### This is the reference source code package of ISAP.ISAP is a mode for authenticated encryption algorithms, submitted to the [NIST Call for Lightweight Cryptography](https://csrc.nist.gov/Projects/Lightweight-Cryptography). The specification and more details about ISAP can be found on its [website](https://isap.iaik.tugraz.at).### This code was implemented by:* Robert Primas### This code uses the following files from external sources:* KeccakP-400-SnP.h, KeccakP-400-reference.c :From: [eXtended Keccak Code Package](https://github.com/XKCP/XKCP/tree/master/lib/low/KeccakP-400/Reference)Copyright: See file header* brg_endian.h :From: [eXtended Keccak Code Package](https://github.com/XKCP/XKCP/tree/master/lib/common)Copyright: See file header* Ascon-reference.h, Ascon-reference.c :From: [Ascon Software Repository](https://github.com/ascon/crypto_aead/archive/master.zip)Copyright: See zip folder