1 files changed, 29 insertions, 0 deletions
diff --git a/src/lib/crypt_ops/aes.h b/src/lib/crypt_ops/aes.h
new file mode 100644
index 0000000000..e1287d330e
--- /dev/null
+++ b/src/lib/crypt_ops/aes.h
@@ -0,0 +1,29 @@
+/* Copyright (c) 2003, Roger Dingledine
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/* Implements a minimal interface to counter-mode AES. */
+
+#ifndef TOR_AES_H
+#define TOR_AES_H
+
+/**
+ * \file aes.h
+ * \brief Headers for aes.c
+ */
+
+typedef struct aes_cnt_cipher aes_cnt_cipher_t;
+
+aes_cnt_cipher_t* aes_new_cipher(const uint8_t *key, const uint8_t *iv,
+                                 int key_bits);
+void aes_cipher_free_(aes_cnt_cipher_t *cipher);
+#define aes_cipher_free(cipher) \
+  FREE_AND_NULL(aes_cnt_cipher_t, aes_cipher_free_, (cipher))
+void aes_crypt_inplace(aes_cnt_cipher_t *cipher, char *data, size_t len);
+
+int evaluate_evp_for_aes(int force_value);
+int evaluate_ctr_for_aes(void);
+
+#endif /* !defined(TOR_AES_H) */
+