Imported Upstream version 4.8.0.309

Former-commit-id: 5f9c6ae75f295e057a7d2971f3a6df4656fa8850

external/boringssl/include/openssl/chacha.h

@@ -0,0 +1,37 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CHACHA_H
+#define OPENSSL_HEADER_CHACHA_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* CRYPTO_chacha_20 encrypts |in_len| bytes from |in| with the given key and
+ * nonce and writes the result to |out|. If |in| and |out| alias, they must be
+ * equal. The initial block counter is specified by |counter|. */
+OPENSSL_EXPORT void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in,
+                                     size_t in_len, const uint8_t key[32],
+                                     const uint8_t nonce[12], uint32_t counter);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_CHACHA_H */