oracle自定义md5加密函数_Oracle技术

---------------------------------------------------- 
-- Export file for user daimami.com              -- 
-- Created by Administrator on 2010-6-2, 16:33:33 -- 
---------------------------------------------------- 
  
spool md5_fun.log 
  
prompt 
prompt Creating function MYMD5 
prompt ======================= 
prompt 
create or replace function mymd5(input_string VARCHAR2) return varchar2 IS
  raw_input     RAW(128) := UTL_RAW.CAST_TO_RAW(input_string); 
  decrypted_raw RAW(2048); 
  
  error_in_input_buffer_length EXCEPTION; 
  
BEGIN
  --dbms_output.put_line(sysdate || '> 加密前的数据:' || input_string); 
  sys.dbms_obfuscation_toolkit.MD5(input    => raw_input, 
                                   checksum => decrypted_raw); 
  --dbms_output.put_line(sysdate || '> 加密后的数据:' || rawtohex(decrypted_raw)); 
  return lower(rawtohex(decrypted_raw)); 
  
END; 
/ 
  
  
spool off