1 files changed, 50 insertions, 0 deletions
diff --git a/core/io/sha256.h b/core/io/sha256.h
new file mode 100644
index 0000000000..e19e56b4cc
--- /dev/null
+++ b/core/io/sha256.h
@@ -0,0 +1,50 @@
+/*
+*   SHA-256 implementation.
+*
+*   Copyright (c) 2010 Ilya O. Levin, http://www.literatecode.com
+*
+*   Permission to use, copy, modify, and 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.
+*/
+#ifdef _MSC_VER
+#ifndef uint8_t
+typedef unsigned __int8 uint8_t;
+#endif
+#ifndef uint32_t
+typedef unsigned __int32 uint32_t;
+#endif
+#ifndef uint64_t
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+#endif
+#else
+#include <stdint.h>
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+   typedef struct {
+       uint32_t buf[16];
+       uint32_t hash[8];
+       uint32_t len[2];
+   } sha256_context;
+
+   void sha256_init(sha256_context *);
+   void sha256_hash(sha256_context *, uint8_t * /* data */, uint32_t /* len */);
+   void sha256_done(sha256_context *, uint8_t * /* hash */);
+
+#ifdef __cplusplus
+}
+#endif