Split crypto and tls libraries into directories

I am calling the crypto library "crypt_ops", since I want
higher-level crypto things to be separated from lower-level ones.
This library will hold only the low-level ones, once we have it
refactored.

1 files changed, 28 insertions, 0 deletions

diff --git a/src/lib/crypt_ops/crypto_hkdf.h b/src/lib/crypt_ops/crypto_hkdf.h
new file mode 100644
index 0000000000..784f4bbbe4
--- /dev/null
+++ b/src/lib/crypt_ops/crypto_hkdf.h
@@ -0,0 +1,28 @@
+/* Copyright (c) 2001, Matej Pfajfar.
+ * Copyright (c) 2001-2004, Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * \file crypto_hkdf.h
+ *
+ * \brief Headers for crypto_hkdf.h
+ **/
+
+#ifndef TOR_CRYPTO_HKDF_H
+#define TOR_CRYPTO_HKDF_H
+
+#include "common/util.h"
+
+int crypto_expand_key_material_TAP(const uint8_t *key_in,
+                                   size_t key_in_len,
+                                   uint8_t *key_out, size_t key_out_len);
+int crypto_expand_key_material_rfc5869_sha256(
+                                    const uint8_t *key_in, size_t key_in_len,
+                                    const uint8_t *salt_in, size_t salt_in_len,
+                                    const uint8_t *info_in, size_t info_in_len,
+                                    uint8_t *key_out, size_t key_out_len);
+
+#endif /* !defined(TOR_CRYPTO_HKDF_H) */
+