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Sometimes, you'd want a string to be converted to base64 for what ever reason.
It's NOT a good method to encrypt data, but it can be handy when storing weird characters in an INI file in an (almost) unreadable format.
In Lazarus (for strings), this can be done very quick and easy.
Step 1 - Add "base64" to the Uses clause
Step 2 - Encode a string:
myEncodedString := EncodeStringBase64('some string');
Step 3 - Decode a string:
myDecodedString := DecodeStringBase64(myEncodedString);