- Renamed include directory to polarssl
diff --git a/include/polarssl/base64.h b/include/polarssl/base64.h
new file mode 100644
index 0000000..0cad863
--- /dev/null
+++ b/include/polarssl/base64.h
@@ -0,0 +1,62 @@
+/**
+ * \file base64.h
+ */
+#ifndef XYSSL_BASE64_H
+#define XYSSL_BASE64_H
+
+#define XYSSL_ERR_BASE64_BUFFER_TOO_SMALL -0x0010
+#define XYSSL_ERR_BASE64_INVALID_CHARACTER -0x0012
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Encode a buffer into base64 format
+ *
+ * \param dst destination buffer
+ * \param dlen size of the buffer
+ * \param src source buffer
+ * \param slen amount of data to be encoded
+ *
+ * \return 0 if successful, or XYSSL_ERR_BASE64_BUFFER_TOO_SMALL.
+ * *dlen is always updated to reflect the amount
+ * of data that has (or would have) been written.
+ *
+ * \note Call this function with *dlen = 0 to obtain the
+ * required buffer size in *dlen
+ */
+int base64_encode( unsigned char *dst, int *dlen,
+ unsigned char *src, int slen );
+
+/**
+ * \brief Decode a base64-formatted buffer
+ *
+ * \param dst destination buffer
+ * \param dlen size of the buffer
+ * \param src source buffer
+ * \param slen amount of data to be decoded
+ *
+ * \return 0 if successful, XYSSL_ERR_BASE64_BUFFER_TOO_SMALL, or
+ * XYSSL_ERR_BASE64_INVALID_DATA if the input data is not
+ * correct. *dlen is always updated to reflect the amount
+ * of data that has (or would have) been written.
+ *
+ * \note Call this function with *dlen = 0 to obtain the
+ * required buffer size in *dlen
+ */
+int base64_decode( unsigned char *dst, int *dlen,
+ unsigned char *src, int slen );
+
+/**
+ * \brief Checkup routine
+ *
+ * \return 0 if successful, or 1 if the test failed
+ */
+int base64_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* base64.h */