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-rw-r--r--pypride.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/pypride.py b/pypride.py
index f247ceb..935d8c4 100644
--- a/pypride.py
+++ b/pypride.py
@@ -10,6 +10,10 @@
# Python implementation of the PRIDE cipher
# Copyright (C) 2015 Camil Staps (info@camilstaps.nl)
#
+# Some general implementation ideas were taken from Cristophe Osterlynck and
+# Philippe Teuwen's PRESENT implementation:
+# http://www.lightweightcrypto.org/downloads/implementations/pypresent.py
+#
# =============================================================================
#
# PRIDE is a modern (2014) lightweight block cipher optimized for 8-bit