Oracle查询密码加密串方法(二)
of versions 7 - 10gR2
-- -----------------------------------------------------------------------------
-- Maintainer : Pete Finnigan (http://www.petefinnigan.com)
-- Copyright : Copyright (C) 2008, 2009, PeteFinnigan.com Limited. All rights
-- reserved. All registered trademarks are the property of their
-- respective owners and are hereby acknowledged.
-- -----------------------------------------------------------------------------
-- License : This software is free software BUT it is not in the public
-- domain. This means that you can use it for personal or
-- commercial work but you cannot remove this notice or copyright
-- notices or the banner output by the program or edit them in any
-- way at all. You also cannot host/distribute/copy or in anyway
-- make this script available through any means either in original
-- form or any derivitive work based on it. The script is
-- only available from its own webpage
-- http://www.petefinnigan.com/testpwd.sql or any other page that
-- PeteFinnigan.com Limited hosts it from.
-- This script cannot be incorporated into any other free or
-- commercial tools without permission from PeteFinnigan.com
-- Limited.
--
-- In simple terms use it for free but dont make it available in
-- any way or build it into any other tools.
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-- Version History
-- ===============
--
-- Who version Date Description
-- === ======= ====== ======================
-- P.Finnigan 1.0 May 2009 First Issue.
-- P.Finnigan 1.1 May 2009 Added calls to upper for username/password
-- Thanks to Kennie Nybo Pontoppidan.
--
-- -----------------------------------------------------------------------------
create or replace function testpwd(username in varchar2, password in varchar2)
return char
authid current_user
is
--
raw_key raw(128):= hextoraw('0123456789ABCDEF');
--
raw_ip raw(128);
pwd_hash varchar2(16);
--
cursor c_user (cp_name in varchar2) is
select password
from sys.user$
where password is not null
and name=cp_name;
--
procedure unicode_str(userpwd in varchar2, unistr out raw)
is
enc_str varchar2(124):='';
tot_len number;
curr_char char(1);
padd_len number;
ch char(1);
mod_len number;
debugp varchar2(256);
begin
tot_len:=length(userpwd);
for i in 1..tot_len loop
curr_char:=substr(userpwd,i,1);
enc_str:=enc_str||chr(0)||curr_char;
end loop;
mod_len:= mod((tot_len*2),8);
if (mod_len = 0) then
padd_len:= 0;
else
padd_len:=8 - mod_len;
end if;
for i in 1..padd_len loop
enc_str:=enc_str||chr(0);
end loop;
unistr:=utl_raw.cast_to_raw(enc_str);
end;
--
function crack (userpwd in raw) return varchar2
is
enc_raw raw(2048);
--
raw_key2 raw(128);
pwd_hash raw(2048);