update package header

Author: xtaci

hppk.go

@@ -1,3 +1,13 @@
+// Package hppk implements the Hierarchical Polynomial Public Key (HPPK) cryptosystem.
+//
+// HPPK introduces a novel Homomorphic Polynomial Public Key for
+// Key Encapsulation Mechanism (KEM) and Digital Signatures (DS).
+// By exploiting the inherent partial homomorphic properties of the modular
+// multiplicative permutations, HPPK offers a robust symmetric encryption
+// mechanism for asymmetric cryptography, independent of NP-hard problems. The
+// seamless integration of KEM and DS within HPPK results in compact key sizes,
+// cipher sizes, and signature sizes, demonstrating exceptional performance across
+// various cryptographic operations
 package hppk
 
 import (