Add base32.h

Author: igor-sadchenko

base32.h

@@ -0,0 +1,10 @@
+// Base32 encoding implementation
+//
+
+#pragma once
+
+std::string base32_encode(const std::string &data);
+std::string base32_decode(const std::string &encoded);
+
+// Helper - converts "W2UETLWDY3A4PCONY3GK" to "W2UET-LWDY3-A4PCO-NY3GK"
+std::string GroupStringByHyphens(const std::string &s, unsigned int symbols_in_group);