1 files changed, 60 insertions, 0 deletions
diff --git a/src/lib/encoding/binascii.h b/src/lib/encoding/binascii.h
new file mode 100644
index 0000000000..23cbaa7070
--- /dev/null
+++ b/src/lib/encoding/binascii.h
@@ -0,0 +1,60 @@
+/* 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 binascii.h
+ *
+ * \brief Header for binascii.c
+ **/
+
+#ifndef TOR_BINASCII_H
+#define TOR_BINASCII_H
+
+#include "orconfig.h"
+#include <stddef.h>
+#include "lib/testsupport/testsupport.h"
+#include "lib/cc/torint.h"
+
+const char *hex_str(const char *from, size_t fromlen);
+
+/** @{ */
+/** These macros don't check for overflow.  Use them only for constant inputs
+ * (like array declarations).  The *_LEN macros are the raw encoding lengths
+ * (without terminating NUL), while the *_BUFSIZE macros count the terminating
+ * NUL. */
+#define BASE64_LEN(n) (CEIL_DIV((n), 3) * 4)
+#define BASE32_LEN(n) (CEIL_DIV((n), 5) * 8)
+#define BASE16_LEN(n) ((n) * 2)
+
+#define BASE64_BUFSIZE(n) (BASE64_LEN(n) + 1)
+#define BASE32_BUFSIZE(n) (BASE32_LEN(n) + 1)
+#define BASE16_BUFSIZE(n) (BASE16_LEN(n) + 1)
+
+#define BASE64_NOPAD_LEN(n) (CEIL_DIV((n) * 4, 3))
+#define BASE32_NOPAD_LEN(n) (CEIL_DIV((n) * 8, 5))
+
+#define BASE64_NOPAD_BUFSIZE(n) (BASE64_NOPAD_LEN(n) + 1)
+#define BASE32_NOPAD_BUFSIZE(n) (BASE32_NOPAD_LEN(n) + 1)
+/** @} */
+
+#define BASE64_ENCODE_MULTILINE 1
+size_t base64_encode_size(size_t srclen, int flags);
+int base64_encode(char *dest, size_t destlen, const char *src, size_t srclen,
+                  int flags);
+int base64_decode(char *dest, size_t destlen, const char *src, size_t srclen);
+int base64_encode_nopad(char *dest, size_t destlen,
+                        const uint8_t *src, size_t srclen);
+
+/** Characters that can appear (case-insensitively) in a base32 encoding. */
+#define BASE32_CHARS "abcdefghijklmnopqrstuvwxyz234567"
+void base32_encode(char *dest, size_t destlen, const char *src, size_t srclen);
+int base32_decode(char *dest, size_t destlen, const char *src, size_t srclen);
+size_t base32_encoded_size(size_t srclen);
+
+void base16_encode(char *dest, size_t destlen, const char *src, size_t srclen);
+int base16_decode(char *dest, size_t destlen, const char *src, size_t srclen);
+
+#endif /* !defined(TOR_UTIL_FORMAT_H) */