New upstream version 5.5.1

1 files changed, 70 insertions, 0 deletions

diff --git a/src/libstrongswan/plugins/newhope/newhope_noise.h b/src/libstrongswan/plugins/newhope/newhope_noise.h
new file mode 100644
index 000000000..d7819d3ad
--- /dev/null
+++ b/src/libstrongswan/plugins/newhope/newhope_noise.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2016 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 newhope_noise newhope_noise
+ * @{ @ingroup newhope_p
+ */
+
+#ifndef NEWHOPE_NOISE_H_
+#define NEWHOPE_NOISE_H_
+
+typedef struct newhope_noise_t newhope_noise_t;
+
+#include <library.h>
+
+/**
+ * Generate pseudo random noise using a ChaCha20 stream
+ * initialized with a 256 bit seed and an 8 bit nonce
+ */
+struct newhope_noise_t {
+
+	/**
+	 * Return n pseudo random bytes with a uniform distribution
+	 *
+	 * @param nonce		Nonce determining the pseudo random stream
+	 * @param n			Number of pseudo random bytes to be returned
+	 * @return			Return array with n peudo random bytes
+	 */
+	uint8_t* (*get_uniform_bytes)(newhope_noise_t *this, uint8_t nonce,
+								  uint16_t n);
+
+	/**
+	 * Return n pseudo random 32-bit words with a Psi16 binomial distribution
+	 *
+	 * @param nonce		Nonce determining the pseudo random stream
+	 * @param n			Number of pseudo random Psi16 words to be returned
+	 * @param q			Prime number q determining the ring
+	 * @return			Return array with n pseudo random 32 bit words
+	 */
+	uint32_t* (*get_binomial_words)(newhope_noise_t *this, uint8_t nonce,
+									uint16_t n, uint16_t q);
+
+	/**
+	 * Destroy a newhope_noise_t object
+	 */
+	void (*destroy)(newhope_noise_t *this);
+};
+
+/**
+ * Creates a new newhope_noise_t object.
+ *
+ * @param seed			256 bit seed (32 byte chunk)
+ * @return				newhope_noise_t object, NULL if not supported
+ */
+newhope_noise_t *newhope_noise_create(chunk_t seed);
+
+#endif /** NEWHOPE_NOISE_H_ @}*/
+