From 7cf11db685832db42b6cbb33f9eca99db6ff4fcf Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Tue, 19 Jan 2016 12:50:33 +0100
Subject: libsec: add salsa20 stream cipher

---
 sys/include/libsec.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'sys/include/libsec.h')

diff --git a/sys/include/libsec.h b/sys/include/libsec.h
index 86cb342e5..204ca4d26 100644
--- a/sys/include/libsec.h
+++ b/sys/include/libsec.h
@@ -106,6 +106,34 @@ void	chacha_encrypt2(uchar*, uchar*, ulong, Chachastate*);
 void	ccpoly_encrypt(uchar *dat, ulong ndat, uchar *aad, ulong naad, uchar tag[16], Chachastate *cs);
 int	ccpoly_decrypt(uchar *dat, ulong ndat, uchar *aad, ulong naad, uchar tag[16], Chachastate *cs);
 
+/*
+ * Salsa definitions
+ */
+enum
+{
+	SalsaBsize=	64,
+	SalsaKeylen=	256/8,
+	SalsaIVlen=	64/8,
+	XSalsaIVlen=	192/8,
+};
+
+typedef struct Salsastate Salsastate;
+struct Salsastate
+{
+	u32int	input[16];
+	u32int	key[8];
+	int	rounds;
+	int	ivwords;
+};
+
+void	setupSalsastate(Salsastate*, uchar*, ulong, uchar*, ulong, int);
+void	salsa_setiv(Salsastate*, uchar*);
+void	salsa_setblock(Salsastate*, u64int);
+void	salsa_encrypt(uchar*, ulong, Salsastate*);
+void	salsa_encrypt2(uchar*, uchar*, ulong, Salsastate*);
+
+void	hsalsa(uchar h[32], uchar *key, ulong keylen, uchar nonce[16], int rounds);
+
 /*
  * DES definitions
  */
-- 
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