TOTP

lib/Arduino-Base32-Decode/src/Base32-Decode.h

@@ -0,0 +1,30 @@
+#ifndef BASE32_DECODE_H
+#define BASE32_DECODE_H
+
+/* base32decode - decode a \0 terminated base32 encoded string.
+ *  
+ * encoded        \0 terminated char buffer with encoded string
+ * decodedBytes   outputbuffer (or NULL)
+ * maxbuff        size of the output buffer
+ *
+ * returns the decoded byte array in decodedBytes and the length. Or if
+ * decodedBytes==NULL, will just return the length needed; regardless of
+ * the value of maxbuff.
+ * 
+ * If the size of maxbuff allows it - a terminating \0 is added (but not
+ * including in the length returned) - as very often the decoded data
+ * itself is actually again a string.
+ */
+extern int base32decode(const char * encoded, unsigned char * decodedBytes, size_t maxbuf);
+
+/* base32decodeToString - decode a String into a decoded String
+ *  
+ *  encoded   String with the encoded base32 value
+ *  &decoded  returned string (if any)
+ *  
+ * Will return the length of the decoded string or a negative
+ * value on error. 
+ */
+
+extern int base32decodeToString(String encoded, String &decoded);
+#endif