原始碼：CREATE OR REPLACE FUNCTION fn_md5 (input_string IN 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_OBFUSCATION_TOOLKIT.md5 (input => raw_input,
checksum => decrypted_raw
);
RETURN LOWER (RAWTOHEX (decrypted_raw));
END;
/


相同的
pl/sql版 CREATE OR REPLACE function md5(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
sys.dbms_obfuscation_toolkit.MD5(input => raw_input, checksum => decrypted_raw);
return lower(rawtohex(decrypted_raw));
END;