1 files changed, 75 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/bliss/bliss_fft_params.h b/src/libstrongswan/plugins/bliss/bliss_fft_params.h
new file mode 100644
index 000000000..31b151b67
--- /dev/null
+++ b/src/libstrongswan/plugins/bliss/bliss_fft_params.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2014 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup bliss_fft_params bliss_fft_params
+ * @{ @ingroup bliss_p
+ */
+
+#ifndef BLISS_FFT_PARAMS_H_
+#define BLISS_FFT_PARAMS_H_
+
+#include <library.h>
+
+typedef struct bliss_fft_params_t bliss_fft_params_t;
+
+/**
+ * Defines the parameters for an NTT computed via the FFT algorithm
+ */
+struct bliss_fft_params_t {
+
+	/**
+	 * Prime modulus
+	 */
+	uint16_t q;
+
+	/**
+	 * Size of the FFT with the condition k * n = q-1
+	 */
+	uint16_t n;
+
+	/**
+	 * Inverse of n mod q used for normalization of the FFT
+	 */
+	uint16_t n_inv;
+
+	/**
+	 * Number of FFT stages  stages = log2(n)
+	 */
+	uint16_t stages;
+
+	/**
+	 * FFT twiddle factors (n-th roots of unity)
+	 */
+	uint16_t *w;
+
+	/**
+	 * FFT bit reversal
+	 */
+	uint16_t *rev;
+
+};
+
+/**
+ * FFT parameters for q = 12289 and n = 512
+ */
+extern bliss_fft_params_t bliss_fft_12289_512;
+
+/**
+ * FFT parameters for q = 17 and n = 8
+ */
+extern bliss_fft_params_t bliss_fft_17_8;
+
+#endif /** BLISS_FFT_PARAMS_H_ @}*/