diff --git a/CMakeLists.txt b/CMakeLists.txt
index 58381da..77f4842 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,7 +14,7 @@ IF(JSONC_FOUND)
   INCLUDE_DIRECTORIES(${JSONC_INCLUDE_DIRS})
 ENDIF()
 
-SET(SOURCES avl.c avl-cmp.c blob.c blobmsg.c uloop.c usock.c ustream.c ustream-fd.c vlist.c utils.c safe_list.c runqueue.c md5.c kvlist.c ulog.c)
+SET(SOURCES avl.c avl-cmp.c blob.c blobmsg.c uloop.c usock.c ustream.c ustream-fd.c vlist.c utils.c safe_list.c runqueue.c md5.c kvlist.c ulog.c b64.c)
 
 ADD_LIBRARY(ubox SHARED ${SOURCES})
 ADD_LIBRARY(ubox-static STATIC ${SOURCES})
diff --git a/b64.c b/b64.c
new file mode 100644
index 0000000..ac8a805
--- /dev/null
+++ b/b64.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2011 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2015 Luka Perkov <luka@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "b64.h"
+
+static const uint8_t b64decode_tbl[] = {
+	0x3e, 0xff, 0xff, 0xff, 0x3f, 0x34, 0x35, 0x36,
+	0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0xff,
+	0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x01,
+	0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
+	0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
+	0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1a, 0x1b,
+	0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
+	0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
+	0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33
+};
+
+int b64decode(void *out, const void *in, size_t len)
+{
+	uint8_t *o = (uint8_t *) out;
+	const uint8_t *data = (const uint8_t *) in;
+	size_t lenout, i, j;
+	uint32_t cv = 0;
+
+	lenout = b64_decode_size(len);
+	if (!lenout)
+		return -1;
+
+	o[--lenout] = '\0';
+
+	for (i = 0; i < len; i += 4) {
+		cv = 0;
+		for (j = 0; j < 4; j++) {
+			uint8_t c = data[i + j] - 43;
+			if (c > 79 || (c = b64decode_tbl[c]) == 0xff)
+				return -1;
+
+			cv |= c;
+			if (j != 3)
+				cv <<= 6;
+		}
+
+		o[2] = (uint8_t)(cv & 0xff);
+		o[1] = (uint8_t)((cv >> 8) & 0xff);
+		o[0] = (uint8_t)((cv >> 16) & 0xff);
+		o += 3;
+	}
+
+	for (i = 1; i <= 2; i++) {
+		if (data[len - i] == '=') {
+			o[-i] = '\0';
+			lenout--;
+		} else
+			break;
+	}
+
+	return lenout;
+}
+
+static const uint8_t b64encode_tbl[] =
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+int b64encode(void *out, const void *in, size_t len)
+{
+	uint8_t *o = (uint8_t *) out;
+	const uint8_t *data = (const uint8_t *) in;
+	size_t pad, i;
+	uint32_t cv;
+
+	if (len == 0)
+		return -1;
+
+	for (i = 0; i < len; i += 3) {
+		cv = (data[i] << 16) | (data[i + 1] << 8) | data[i + 2];
+		o[3] = b64encode_tbl[cv & 0x3f];
+		o[2] = b64encode_tbl[(cv >> 6) & 0x3f];
+		o[1] = b64encode_tbl[(cv >> 12) & 0x3f];
+		o[0] = b64encode_tbl[(cv >> 18) & 0x3f];
+		o += 4;
+	}
+
+	pad = len % 3;
+	if (pad) {
+		cv = data[len - pad] << 16;
+		o[-1] = '=';
+		o[-2] = '=';
+		if (pad == 2) {
+			cv |= data[len - pad + 1] << 8;
+			o[-2] = b64encode_tbl[(cv >> 6) & 0x3f];
+		}
+		o[-3] = b64encode_tbl[(cv >> 12) & 0x3f];
+		o[-4] = b64encode_tbl[(cv >> 18) & 0x3f];
+	}
+
+	*o = '\0';
+
+	return (int) (o - (uint8_t *) out);
+}
diff --git a/b64.h b/b64.h
new file mode 100644
index 0000000..821181b
--- /dev/null
+++ b/b64.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2015 Luka Perkov <luka@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __LIBUBOX_B64_H
+#define __LIBUBOX_B64_H
+
+#include <stddef.h>
+
+static inline int b64_decode_size(size_t len)
+{
+	int ret;
+
+	if ((len == 0) || (len % 4))
+		return 0;
+
+	ret = (len / 4) * 3;
+
+	return ret + 1;
+}
+
+static inline int b64_encode_size(size_t len)
+{
+	int ret;
+
+	if (len == 0)
+		return 0;
+
+	ret = (len / 3) * 4;
+
+	if (len % 3)
+		ret += 4;
+
+	return ret + 1;
+}
+
+int b64decode(void *out, const void *in, size_t len);
+int b64encode(void *out, const void *in, size_t len);
+
+#endif
