Introduction - If you have any usage issues, please Google them yourself
* BASE64 encoding rules: a group of consecutive bytes of data bit by 6-bit group, and then for each data character* A ASICC expressed as six bit digital up to that 2 of the 6-th power or 64 value, this 64* is ASICC characters: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/,* in which each character is expressed by the numerical characters in the above with the corresponding index number,* BASE64 encoded byte data requested in each six bit-bit group, if not 6 then fill 0 ,* another requirement is the result of the length of encoding must be integer multiple of 4, or else fill =.