这是apache-james里用户密码加密的方法,第一个参数是密码,第二个参数是算法规则,谁能写出解密的方法public static String digestString(String pass, String algorithm )
throws NoSuchAlgorithmException { MessageDigest md;
ByteArrayOutputStream bos; try {
md = MessageDigest.getInstance(algorithm);
byte[] digest = md.digest(pass.getBytes("iso-8859-1"));
bos = new ByteArrayOutputStream();
OutputStream encodedStream = MimeUtility.encode(bos, "base64");
encodedStream.write(digest);
return bos.toString("iso-8859-1");
} catch (IOException ioe) {
throw new RuntimeException("Fatal error: " + ioe);
} catch (MessagingException me) {
throw new RuntimeException("Fatal error: " + me);
}
}
throws NoSuchAlgorithmException { MessageDigest md;
ByteArrayOutputStream bos; try {
md = MessageDigest.getInstance(algorithm);
byte[] digest = md.digest(pass.getBytes("iso-8859-1"));
bos = new ByteArrayOutputStream();
OutputStream encodedStream = MimeUtility.encode(bos, "base64");
encodedStream.write(digest);
return bos.toString("iso-8859-1");
} catch (IOException ioe) {
throw new RuntimeException("Fatal error: " + ioe);
} catch (MessagingException me) {
throw new RuntimeException("Fatal error: " + me);
}
}
public static String getBASE64(String s) {
if (s == null) return null;
return (new sun.misc.BASE64Encoder()).encode( s.getBytes() );
} // 将 BASE64 编码的字符串 s 进行解码
public static String getFromBASE64(String s) {
if (s == null) return null;
BASE64Decoder decoder = new BASE64Decoder();
try {
byte[] b = decoder.decodeBuffer(s);
return new String(b);
} catch (Exception e) {
return null;
}
}