java - ciphertext A = plaintext(Base64 coding scheme)+2 -

i have apply base64 encoding there "+2".. have been trying find "+2" meaning failed..

i think "ciphertext = plaintext(base64 coding scheme)" usual base64 encoding..that easy java that..

json.put("regver",      base64.encodetostring(strregver.getbytes(), 0)); 

but want know differentiation betweewn above , "ciphertext = plaintext(base64 coding scheme)+2" is..

json.put("regver",      base64.encodetostring(strregver.getbytes(), 0)+2); 

is ok..? +2 after base64 encoding..?

help me~~!! thank much...

cyper.. bad guy matrix.. ^^;