chore: checkpoint before Python removal

vendor/aws-lc-sys/aws-lc/include/openssl/rc4.h

@@ -0,0 +1,43 @@
+// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+#ifndef OPENSSL_HEADER_RC4_H
+#define OPENSSL_HEADER_RC4_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// RC4.
+
+
+struct rc4_key_st {
+  uint32_t x, y;
+  uint32_t data[256];
+} /* RC4_KEY */;
+
+// RC4_set_key performs an RC4 key schedule and initialises |rc4key| with |len|
+// bytes of key material from |key|.
+OPENSSL_EXPORT void RC4_set_key(RC4_KEY *rc4key, unsigned len,
+                                const uint8_t *key);
+
+// RC4 encrypts (or decrypts, it's the same with RC4) |len| bytes from |in| to
+// |out|.
+OPENSSL_EXPORT void RC4(RC4_KEY *key, size_t len, const uint8_t *in,
+                        uint8_t *out);
+
+
+// Deprecated functions.
+
+// RC4_options returns the string "rc4(ptr,int)".
+OPENSSL_EXPORT OPENSSL_DEPRECATED const char *RC4_options(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RC4_H