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_stream/salsa208/checksum      |  1 +
 src/libsodium/crypto_stream/salsa208/ref/api.h     |  9 ++++
 .../crypto_stream/salsa208/ref/stream_salsa208.c   | 51 ++++++++++++++++++++
 .../crypto_stream/salsa208/ref/xor_salsa208.c      | 54 ++++++++++++++++++++++
 .../crypto_stream/salsa208/stream_salsa208_api.c   | 11 +++++
 5 files changed, 126 insertions(+)
 create mode 100644 src/libsodium/crypto_stream/salsa208/checksum
 create mode 100644 src/libsodium/crypto_stream/salsa208/ref/api.h
 create mode 100644 src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c
 create mode 100644 src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c
 create mode 100644 src/libsodium/crypto_stream/salsa208/stream_salsa208_api.c

(limited to 'src/libsodium/crypto_stream/salsa208')

diff --git a/src/libsodium/crypto_stream/salsa208/checksum b/src/libsodium/crypto_stream/salsa208/checksum
new file mode 100644
index 0000000..c87364e
--- /dev/null
+++ b/src/libsodium/crypto_stream/salsa208/checksum
@@ -0,0 +1 @@
+05f32b0647417aaa446b0b3127318133cf9af32b771869eab267000bf02710cd
diff --git a/src/libsodium/crypto_stream/salsa208/ref/api.h b/src/libsodium/crypto_stream/salsa208/ref/api.h
new file mode 100644
index 0000000..14b4a77
--- /dev/null
+++ b/src/libsodium/crypto_stream/salsa208/ref/api.h
@@ -0,0 +1,9 @@
+
+#include "crypto_stream_salsa208.h"
+
+#define crypto_stream crypto_stream_salsa208
+#define crypto_stream_xor crypto_stream_salsa208_xor
+#define crypto_stream_KEYBYTES crypto_stream_salsa208_KEYBYTES
+#define crypto_stream_NONCEBYTES crypto_stream_salsa208_NONCEBYTES
+#define crypto_stream_IMPLEMENTATION crypto_stream_salsa208_IMPLEMENTATION
+#define crypto_stream_VERSION crypto_stream_salsa208_VERSION
diff --git a/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c b/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c
new file mode 100644
index 0000000..0889002
--- /dev/null
+++ b/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c
@@ -0,0 +1,51 @@
+/*
+version 20080913
+D. J. Bernstein
+Public domain.
+*/
+
+#include "api.h"
+#include "crypto_core_salsa208.h"
+
+typedef unsigned int uint32;
+
+static const unsigned char sigma[16] = {
+        'e', 'x', 'p', 'a', 'n', 'd', ' ', '3', '2', '-', 'b', 'y', 't', 'e', ' ', 'k'
+};
+
+int crypto_stream(
+        unsigned char *c,unsigned long long clen,
+  const unsigned char *n,
+  const unsigned char *k
+)
+{
+  unsigned char in[16];
+  unsigned char block[64];
+  unsigned long long i;
+  unsigned int u;
+
+  if (!clen) return 0;
+
+  for (i = 0;i < 8;++i) in[i] = n[i];
+  for (i = 8;i < 16;++i) in[i] = 0;
+
+  while (clen >= 64) {
+    crypto_core_salsa208(c,in,k,sigma);
+
+    u = 1;
+    for (i = 8;i < 16;++i) {
+      u += (unsigned int) in[i];
+      in[i] = u;
+      u >>= 8;
+    }
+
+    clen -= 64;
+    c += 64;
+  }
+
+  if (clen) {
+    crypto_core_salsa208(block,in,k,sigma);
+    for (i = 0;i < clen;++i) c[i] = block[i];
+  }
+  return 0;
+}
diff --git a/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c b/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c
new file mode 100644
index 0000000..9f6dac5
--- /dev/null
+++ b/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c
@@ -0,0 +1,54 @@
+/*
+version 20080913
+D. J. Bernstein
+Public domain.
+*/
+
+#include "api.h"
+#include "crypto_core_salsa208.h"
+
+typedef unsigned int uint32;
+
+static const unsigned char sigma[16] = {
+    'e', 'x', 'p', 'a', 'n', 'd', ' ', '3', '2', '-', 'b', 'y', 't', 'e', ' ', 'k'
+};
+
+int crypto_stream_xor(
+        unsigned char *c,
+  const unsigned char *m,unsigned long long mlen,
+  const unsigned char *n,
+  const unsigned char *k
+)
+{
+  unsigned char in[16];
+  unsigned char block[64];
+  unsigned long long i;
+  unsigned int u;
+
+  if (!mlen) return 0;
+
+  for (i = 0;i < 8;++i) in[i] = n[i];
+  for (i = 8;i < 16;++i) in[i] = 0;
+
+  while (mlen >= 64) {
+    crypto_core_salsa208(block,in,k,sigma);
+    for (i = 0;i < 64;++i) c[i] = m[i] ^ block[i];
+
+    u = 1;
+    for (i = 8;i < 16;++i) {
+      u += (unsigned int) in[i];
+      in[i] = u;
+      u >>= 8;
+    }
+
+    mlen -= 64;
+    c += 64;
+    m += 64;
+  }
+
+  if (mlen) {
+    crypto_core_salsa208(block,in,k,sigma);
+    for (i = 0;i < mlen;++i) c[i] = m[i] ^ block[i];
+  }
+  return 0;
+}
diff --git a/src/libsodium/crypto_stream/salsa208/stream_salsa208_api.c b/src/libsodium/crypto_stream/salsa208/stream_salsa208_api.c
new file mode 100644
index 0000000..640a8b2
--- /dev/null
+++ b/src/libsodium/crypto_stream/salsa208/stream_salsa208_api.c
@@ -0,0 +1,11 @@
+#include "crypto_stream_salsa208.h"
+
+size_t
+crypto_stream_salsa208_keybytes(void) {
+    return crypto_stream_salsa208_KEYBYTES;
+}
+
+size_t
+crypto_stream_salsa208_noncebytes(void) {
+    return crypto_stream_salsa208_NONCEBYTES;
+}
-- 
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