WIP: Tox encryption.

1 files changed, 57 insertions, 0 deletions

diff --git a/cbits/cryptonite_salsa.h b/cbits/cryptonite_salsa.h
new file mode 100644
index 00000000..33e9cda9
--- /dev/null
+++ b/cbits/cryptonite_salsa.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2014 Vincent Hanquez <vincent@snarc.org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of his contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef CRYPTONITE_SALSA
+#define CRYPTONITE_SALSA
+
+typedef union {
+        uint64_t q[8];
+        uint32_t d[16];
+        uint8_t  b[64];
+} block;
+
+typedef block cryptonite_salsa_state;
+
+typedef struct {
+        cryptonite_salsa_state st;
+        uint8_t prev[64];
+        uint8_t prev_ofs;
+        uint8_t prev_len;
+        uint8_t nb_rounds;
+} cryptonite_salsa_context;
+
+/* for scrypt */
+void cryptonite_salsa_core_xor(int rounds, block *out, block *in);
+
+void cryptonite_salsa_init_core(cryptonite_salsa_state *st, uint32_t keylen, const uint8_t *key, uint32_t ivlen, const uint8_t *iv);
+void cryptonite_salsa_init(cryptonite_salsa_context *ctx, uint8_t nb_rounds, uint32_t keylen, const uint8_t *key, uint32_t ivlen, const uint8_t *iv);
+void cryptonite_salsa_combine(uint8_t *dst, cryptonite_salsa_context *st, const uint8_t *src, uint32_t bytes);
+void cryptonite_salsa_generate(uint8_t *dst, cryptonite_salsa_context *st, uint32_t bytes);
+
+#endif