/**
??? * Encode a string using Base64 encoding. Used when storing passwords
??? * as cookies.
??? *
??? * This is weak encoding in that anyone can use the decodeString
??? * routine to reverse the encoding.
??? *
??? * @param str
??? * @return String
??? */
?? public static String encodeString(String str)? {
?????? sun.misc.BASE64Encoder encoder = new sun.misc.BASE64Encoder();
?????? return encoder.encodeBuffer(str.getBytes()).trim();
?? }
?? /**
??? * Decode a string using Base64 encoding.
??? *
??? * @param str
??? * @return String
??? */
?? public static String decodeString(String str) {
?????? sun.misc.BASE64Decoder dec = new sun.misc.BASE64Decoder();
?????? try {
?????????? return new String(dec.decodeBuffer(str));
?????? } catch (IOException io) {
?????????????? throw new RuntimeException(io.getMessage(), io.getCause());
?????? }
??? }