chore: checkpoint before Python removal

vendor/aws-lc-sys/aws-lc/include/openssl/siphash.h

@@ -0,0 +1,26 @@
+// Copyright (c) 2019, Google Inc.
+// SPDX-License-Identifier: ISC
+
+#ifndef OPENSSL_HEADER_SIPHASH_H
+#define OPENSSL_HEADER_SIPHASH_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SipHash is a fast, secure PRF that is often used for hash tables.
+
+
+// SIPHASH_24 implements SipHash-2-4. See https://131002.net/siphash/siphash.pdf
+OPENSSL_EXPORT uint64_t SIPHASH_24(const uint64_t key[2], const uint8_t *input,
+                                   size_t input_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SIPHASH_H