secp256k1-zkp/src/modules/ellswift/Makefile.am.include

include_HEADERS += include/secp256k1_ellswift.h
noinst_HEADERS += src/modules/ellswift/main_impl.h
noinst_HEADERS += src/modules/ellswift/tests_impl.h
Add ellswift module implementing ElligatorSwift The scheme implemented is described below, and largely follows the paper "SwiftEC: Shallue–van de Woestijne Indifferentiable Function To Elliptic Curves", by Chavez-Saab, Rodriguez-Henriquez, and Tibouchi (https://eprint.iacr.org/2022/759). A new 64-byte public key format is introduced, with the property that every 64-byte array is an encoding for a non-infinite curve point. Each curve point has roughly 2^256 distinct encodings. This permits disguising public keys as uniformly random bytes. The new API functions: * secp256k1_ellswift_encode: convert a normal public key to an ellswift 64-byte public key, using additional entropy to pick among the many possible encodings. * secp256k1_ellswift_decode: convert an ellswift 64-byte public key to a normal public key. * secp256k1_ellswift_create: a faster and safer equivalent to calling secp256k1_ec_pubkey_create + secp256k1_ellswift_encode. * secp256k1_ellswift_xdh: x-only ECDH directly on ellswift 64-byte public keys, where the key encodings are fed to the hash function. The scheme itself is documented in secp256k1_ellswift.h. 2022-11-04 16:18:40 -04:00			`include_HEADERS += include/secp256k1_ellswift.h`
			`noinst_HEADERS += src/modules/ellswift/main_impl.h`
Add tests for ellswift module These include both test vectors taken from BIP324, as randomized unit tests. 2022-11-04 15:59:33 -04:00			`noinst_HEADERS += src/modules/ellswift/tests_impl.h`