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_shorthash/crypto_shorthash.c  | 27 +++++++
 src/libsodium/crypto_shorthash/siphash24/ref/api.h |  7 ++
 .../siphash24/ref/shorthash_siphash24.c            | 91 ++++++++++++++++++++++
 .../siphash24/shorthash_siphash24_api.c            | 11 +++
 4 files changed, 136 insertions(+)
 create mode 100644 src/libsodium/crypto_shorthash/crypto_shorthash.c
 create mode 100644 src/libsodium/crypto_shorthash/siphash24/ref/api.h
 create mode 100644 src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c
 create mode 100644 src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c

(limited to 'src/libsodium/crypto_shorthash')

diff --git a/src/libsodium/crypto_shorthash/crypto_shorthash.c b/src/libsodium/crypto_shorthash/crypto_shorthash.c
new file mode 100644
index 0000000..b68b58a
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/crypto_shorthash.c
@@ -0,0 +1,27 @@
+
+#include "crypto_shorthash.h"
+
+size_t
+crypto_shorthash_bytes(void)
+{
+    return crypto_shorthash_BYTES;
+}
+
+size_t
+crypto_shorthash_keybytes(void)
+{
+    return crypto_shorthash_KEYBYTES;
+}
+
+const char *
+crypto_shorthash_primitive(void)
+{
+    return crypto_shorthash_PRIMITIVE;
+}
+
+int
+crypto_shorthash(unsigned char *out, const unsigned char *in,
+                 unsigned long long inlen, const unsigned char *k)
+{
+    return crypto_shorthash_siphash24(out, in, inlen, k);
+}
diff --git a/src/libsodium/crypto_shorthash/siphash24/ref/api.h b/src/libsodium/crypto_shorthash/siphash24/ref/api.h
new file mode 100644
index 0000000..a837c8a
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/siphash24/ref/api.h
@@ -0,0 +1,7 @@
+
+#include "crypto_shorthash_siphash24.h"
+
+#define crypto_shorthash crypto_shorthash_siphash24
+#define crypto_shorthash_BYTES crypto_shorthash_siphash24_BYTES
+#define crypto_shorthash_IMPLEMENTATION crypto_shorthash_siphash24_IMPLEMENTATION
+#define crypto_shorthash_VERSION crypto_shorthash_siphash24_VERSION
diff --git a/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c b/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c
new file mode 100644
index 0000000..3676382
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c
@@ -0,0 +1,91 @@
+#include "api.h"
+#include "crypto_uint64.h"
+#include "crypto_uint32.h"
+#include "crypto_uint8.h"
+
+typedef crypto_uint64 u64;
+typedef crypto_uint32 u32;
+typedef crypto_uint8   u8;
+
+#define ROTL(x,b) (u64)( ((x) << (b)) | ( (x) >> (64 - (b))) )
+
+#define U32TO8_LE(p, v)         \
+    (p)[0] = (u8)((v)      ); (p)[1] = (u8)((v) >>  8); \
+    (p)[2] = (u8)((v) >> 16); (p)[3] = (u8)((v) >> 24);
+
+#define U64TO8_LE(p, v)         \
+  U32TO8_LE((p),     (u32)((v)      ));   \
+  U32TO8_LE((p) + 4, (u32)((v) >> 32));
+
+#define U8TO64_LE(p) \
+  (((u64)((p)[0])      ) | \
+   ((u64)((p)[1]) <<  8) | \
+   ((u64)((p)[2]) << 16) | \
+   ((u64)((p)[3]) << 24) | \
+   ((u64)((p)[4]) << 32) | \
+   ((u64)((p)[5]) << 40) | \
+   ((u64)((p)[6]) << 48) | \
+   ((u64)((p)[7]) << 56))
+
+#define SIPROUND            \
+  do {              \
+    v0 += v1; v1=ROTL(v1,13); v1 ^= v0; v0=ROTL(v0,32); \
+    v2 += v3; v3=ROTL(v3,16); v3 ^= v2;     \
+    v0 += v3; v3=ROTL(v3,21); v3 ^= v0;     \
+    v2 += v1; v1=ROTL(v1,17); v1 ^= v2; v2=ROTL(v2,32); \
+  } while(0)
+
+int crypto_shorthash(unsigned char *out,const unsigned char *in,unsigned long long inlen,const unsigned char *k)
+{
+  /* "somepseudorandomlygeneratedbytes" */
+  u64 v0 = 0x736f6d6570736575ULL;
+  u64 v1 = 0x646f72616e646f6dULL;
+  u64 v2 = 0x6c7967656e657261ULL;
+  u64 v3 = 0x7465646279746573ULL;
+  u64 b;
+  u64 k0 = U8TO64_LE( k );
+  u64 k1 = U8TO64_LE( k + 8 );
+  u64 m;
+  const u8 *end = in + inlen - ( inlen % sizeof( u64 ) );
+  const int left = inlen & 7;
+  b = ( ( u64 )inlen ) << 56;
+  v3 ^= k1;
+  v2 ^= k0;
+  v1 ^= k1;
+  v0 ^= k0;
+
+  for ( ; in != end; in += 8 )
+  {
+    m = U8TO64_LE( in );
+    v3 ^= m;
+    SIPROUND;
+    SIPROUND;
+    v0 ^= m;
+  }
+
+  switch( left )
+  {
+  case 7: b |= ( ( u64 )in[ 6] )  << 48;
+  case 6: b |= ( ( u64 )in[ 5] )  << 40;
+  case 5: b |= ( ( u64 )in[ 4] )  << 32;
+  case 4: b |= ( ( u64 )in[ 3] )  << 24;
+  case 3: b |= ( ( u64 )in[ 2] )  << 16;
+  case 2: b |= ( ( u64 )in[ 1] )  <<  8;
+  case 1: b |= ( ( u64 )in[ 0] ); break;
+  case 0: break;
+  }
+
+  v3 ^= b;
+  SIPROUND;
+  SIPROUND;
+  v0 ^= b;
+  v2 ^= 0xff;
+  SIPROUND;
+  SIPROUND;
+  SIPROUND;
+  SIPROUND;
+  b = v0 ^ v1 ^ v2  ^ v3;
+  U64TO8_LE( out, b );
+  return 0;
+}
+
diff --git a/src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c b/src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c
new file mode 100644
index 0000000..e2cea77
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c
@@ -0,0 +1,11 @@
+#include "crypto_shorthash_siphash24.h"
+
+size_t
+crypto_shorthash_siphash24_bytes(void) {
+    return crypto_shorthash_siphash24_BYTES;
+}
+
+size_t
+crypto_shorthash_siphash24_keybytes(void) {
+    return crypto_shorthash_siphash24_KEYBYTES;
+}
-- 
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