From 2e59f9740a29439df7c7a56cf0ae83dec3081d31 Mon Sep 17 00:00:00 2001
From: Micah Anderson <micah@riseup.net>
Date: Mon, 11 Aug 2014 13:49:21 -0400
Subject: initial import of debian version from mentors

---
 src/libsodium/crypto_core/salsa2012/ref/api.h      |  10 ++
 .../crypto_core/salsa2012/ref/core_salsa2012.c     | 134 +++++++++++++++++++++
 2 files changed, 144 insertions(+)
 create mode 100644 src/libsodium/crypto_core/salsa2012/ref/api.h
 create mode 100644 src/libsodium/crypto_core/salsa2012/ref/core_salsa2012.c

(limited to 'src/libsodium/crypto_core/salsa2012/ref')

diff --git a/src/libsodium/crypto_core/salsa2012/ref/api.h b/src/libsodium/crypto_core/salsa2012/ref/api.h
new file mode 100644
index 0000000..76919a0
--- /dev/null
+++ b/src/libsodium/crypto_core/salsa2012/ref/api.h
@@ -0,0 +1,10 @@
+
+#include "crypto_core_salsa2012.h"
+
+#define crypto_core crypto_core_salsa2012
+#define crypto_core_OUTPUTBYTES crypto_core_salsa2012_OUTPUTBYTES
+#define crypto_core_INPUTBYTES crypto_core_salsa2012_INPUTBYTES
+#define crypto_core_KEYBYTES crypto_core_salsa2012_KEYBYTES
+#define crypto_core_CONSTBYTES crypto_core_salsa2012_CONSTBYTES
+#define crypto_core_IMPLEMENTATION crypto_core_salsa2012_IMPLEMENTATION
+#define crypto_core_VERSION crypto_core_salsa2012_VERSION
diff --git a/src/libsodium/crypto_core/salsa2012/ref/core_salsa2012.c b/src/libsodium/crypto_core/salsa2012/ref/core_salsa2012.c
new file mode 100644
index 0000000..07a72e7
--- /dev/null
+++ b/src/libsodium/crypto_core/salsa2012/ref/core_salsa2012.c
@@ -0,0 +1,134 @@
+/*
+version 20080913
+D. J. Bernstein
+Public domain.
+*/
+
+#include "api.h"
+
+#define ROUNDS 12
+
+typedef unsigned int uint32;
+
+static uint32 rotate(uint32 u,int c)
+{
+  return (u << c) | (u >> (32 - c));
+}
+
+static uint32 load_littleendian(const unsigned char *x)
+{
+  return
+      (uint32) (x[0]) \
+  | (((uint32) (x[1])) << 8) \
+  | (((uint32) (x[2])) << 16) \
+  | (((uint32) (x[3])) << 24)
+  ;
+}
+
+static void store_littleendian(unsigned char *x,uint32 u)
+{
+  x[0] = u; u >>= 8;
+  x[1] = u; u >>= 8;
+  x[2] = u; u >>= 8;
+  x[3] = u;
+}
+
+int crypto_core(
+        unsigned char *out,
+  const unsigned char *in,
+  const unsigned char *k,
+  const unsigned char *c
+)
+{
+  uint32 x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;
+  uint32 j0, j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11, j12, j13, j14, j15;
+  int i;
+
+  j0 = x0 = load_littleendian(c + 0);
+  j1 = x1 = load_littleendian(k + 0);
+  j2 = x2 = load_littleendian(k + 4);
+  j3 = x3 = load_littleendian(k + 8);
+  j4 = x4 = load_littleendian(k + 12);
+  j5 = x5 = load_littleendian(c + 4);
+  j6 = x6 = load_littleendian(in + 0);
+  j7 = x7 = load_littleendian(in + 4);
+  j8 = x8 = load_littleendian(in + 8);
+  j9 = x9 = load_littleendian(in + 12);
+  j10 = x10 = load_littleendian(c + 8);
+  j11 = x11 = load_littleendian(k + 16);
+  j12 = x12 = load_littleendian(k + 20);
+  j13 = x13 = load_littleendian(k + 24);
+  j14 = x14 = load_littleendian(k + 28);
+  j15 = x15 = load_littleendian(c + 12);
+
+  for (i = ROUNDS;i > 0;i -= 2) {
+     x4 ^= rotate( x0+x12, 7);
+     x8 ^= rotate( x4+ x0, 9);
+    x12 ^= rotate( x8+ x4,13);
+     x0 ^= rotate(x12+ x8,18);
+     x9 ^= rotate( x5+ x1, 7);
+    x13 ^= rotate( x9+ x5, 9);
+     x1 ^= rotate(x13+ x9,13);
+     x5 ^= rotate( x1+x13,18);
+    x14 ^= rotate(x10+ x6, 7);
+     x2 ^= rotate(x14+x10, 9);
+     x6 ^= rotate( x2+x14,13);
+    x10 ^= rotate( x6+ x2,18);
+     x3 ^= rotate(x15+x11, 7);
+     x7 ^= rotate( x3+x15, 9);
+    x11 ^= rotate( x7+ x3,13);
+    x15 ^= rotate(x11+ x7,18);
+     x1 ^= rotate( x0+ x3, 7);
+     x2 ^= rotate( x1+ x0, 9);
+     x3 ^= rotate( x2+ x1,13);
+     x0 ^= rotate( x3+ x2,18);
+     x6 ^= rotate( x5+ x4, 7);
+     x7 ^= rotate( x6+ x5, 9);
+     x4 ^= rotate( x7+ x6,13);
+     x5 ^= rotate( x4+ x7,18);
+    x11 ^= rotate(x10+ x9, 7);
+     x8 ^= rotate(x11+x10, 9);
+     x9 ^= rotate( x8+x11,13);
+    x10 ^= rotate( x9+ x8,18);
+    x12 ^= rotate(x15+x14, 7);
+    x13 ^= rotate(x12+x15, 9);
+    x14 ^= rotate(x13+x12,13);
+    x15 ^= rotate(x14+x13,18);
+  }
+
+  x0 += j0;
+  x1 += j1;
+  x2 += j2;
+  x3 += j3;
+  x4 += j4;
+  x5 += j5;
+  x6 += j6;
+  x7 += j7;
+  x8 += j8;
+  x9 += j9;
+  x10 += j10;
+  x11 += j11;
+  x12 += j12;
+  x13 += j13;
+  x14 += j14;
+  x15 += j15;
+
+  store_littleendian(out + 0,x0);
+  store_littleendian(out + 4,x1);
+  store_littleendian(out + 8,x2);
+  store_littleendian(out + 12,x3);
+  store_littleendian(out + 16,x4);
+  store_littleendian(out + 20,x5);
+  store_littleendian(out + 24,x6);
+  store_littleendian(out + 28,x7);
+  store_littleendian(out + 32,x8);
+  store_littleendian(out + 36,x9);
+  store_littleendian(out + 40,x10);
+  store_littleendian(out + 44,x11);
+  store_littleendian(out + 48,x12);
+  store_littleendian(out + 52,x13);
+  store_littleendian(out + 56,x14);
+  store_littleendian(out + 60,x15);
+
+  return 0;
+}
-- 
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