From 802c7f1c84e4b5a6ac78635878041023fc5831b1 Mon Sep 17 00:00:00 2001
From: Salvatore Benedetto <salvatore.benedetto@intel.com>
Date: Wed, 22 Jun 2016 17:49:14 +0100
Subject: crypto: dh - Add DH software implementation

* Implement MPI based Diffie-Hellman under kpp API
 * Test provided uses data generad by OpenSSL

Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/dh.h  | 29 +++++++++++++++++++++++++++++
 include/crypto/kpp.h |  1 +
 2 files changed, 30 insertions(+)
 create mode 100644 include/crypto/dh.h

(limited to 'include/crypto')

diff --git a/include/crypto/dh.h b/include/crypto/dh.h
new file mode 100644
index 000000000000..5102a8f282e6
--- /dev/null
+++ b/include/crypto/dh.h
@@ -0,0 +1,29 @@
+/*
+ * Diffie-Hellman secret to be used with kpp API along with helper functions
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
+ *
+ * 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.
+ *
+ */
+#ifndef _CRYPTO_DH_
+#define _CRYPTO_DH_
+
+struct dh {
+	void *key;
+	void *p;
+	void *g;
+	unsigned int key_size;
+	unsigned int p_size;
+	unsigned int g_size;
+};
+
+int crypto_dh_key_len(const struct dh *params);
+int crypto_dh_encode_key(char *buf, unsigned int len, const struct dh *params);
+int crypto_dh_decode_key(const char *buf, unsigned int len, struct dh *params);
+
+#endif
diff --git a/include/crypto/kpp.h b/include/crypto/kpp.h
index 4fa897f3366b..937ac122354a 100644
--- a/include/crypto/kpp.h
+++ b/include/crypto/kpp.h
@@ -242,6 +242,7 @@ static inline void kpp_request_set_output(struct kpp_request *req,
 
 enum {
 	CRYPTO_KPP_SECRET_TYPE_UNKNOWN,
+	CRYPTO_KPP_SECRET_TYPE_DH,
 };
 
 /**
-- 
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