Created libnttfft

This makes Number Theoretic Transforms (NTT) based on the efficient
Fast-Fourier-Transform (FFT) available to multiple plugins.

src/libstrongswan/plugins/bliss/Makefile.am

@@ -1,5 +1,6 @@
 AM_CPPFLAGS = \
-	-I$(top_srcdir)/src/libstrongswan
+	-I$(top_srcdir)/src/libstrongswan \
+	-I$(top_srcdir)/src/libstrongswan/math/libnttfft
 
 AM_CFLAGS = \
 	$(PLUGIN_CFLAGS) \
@@ -7,9 +8,12 @@ AM_CFLAGS = \
 
 # these file are also used by bliss_huffman
 noinst_LTLIBRARIES = libbliss-params.la
+
 libbliss_params_la_SOURCES = \
-	bliss_param_set.h bliss_param_set.c \
-	bliss_fft_params.h bliss_fft_params.c
+	bliss_param_set.h bliss_param_set.c
+
+libbliss_params_la_LIBADD = \
+	$(top_builddir)/src/libstrongswan/math/libnttfft/libnttfft.la
 
 # these files are also used by the tests, we can't directly refer to them
 # because of the subdirectory, which would cause distclean to fail
@@ -20,12 +24,14 @@ libbliss_la_SOURCES = \
 	bliss_signature.h bliss_signature.c \
 	bliss_utils.h bliss_utils.c \
 	bliss_bitpacker.h bliss_bitpacker.c \
-	bliss_reduce.h bliss_fft.h bliss_fft.c \
 	bliss_huffman_code.h bliss_huffman_code.c \
 	bliss_huffman_code_1.c bliss_huffman_code_3.c bliss_huffman_code_4.c \
 	bliss_huffman_coder.h bliss_huffman_coder.c \
 	bliss_sampler.h bliss_sampler.c
-libbliss_la_LIBADD = libbliss-params.la
+
+libbliss_la_LIBADD = \
+	$(top_builddir)/src/libstrongswan/math/libnttfft/libnttfft.la \
+	libbliss-params.la
 
 if MONOLITHIC
 noinst_LTLIBRARIES += libstrongswan-bliss.la
@@ -43,7 +49,10 @@ libstrongswan_bliss_la_LIBADD = libbliss.la
 noinst_PROGRAMS = bliss_huffman
 
 bliss_huffman_SOURCES = bliss_huffman.c
-bliss_huffman_LDADD = -lm libbliss-params.la
+
+bliss_huffman_LDADD = -lm \
+	$(top_builddir)/src/libstrongswan/math/libnttfft/libnttfft.la \
+	libbliss-params.la
 
 recreate-bliss-huffman :	bliss_huffman bliss_huffman_code.h
 	$(AM_V_GEN) \