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作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]
1.测试脚本
[oracle@bas ~]$ more pkg_wrap_xff.sql
create or replace package pkg_wrap_xff is
procedure welcome_in(abc in varchar2);
END pkg_wrap_xff;
/
create or replace package body pkg_wrap_xff is
procedure welcome_in(abc in varchar2) as
begin
dbms_output.put_line('welcome ' || abc);
end;
END pkg_wrap_xff;
/
2.创建并测试包
SQL> @pkg_wrap_xff
Package created.
Package body created.
SQL> set serveroutput on
SQL> exec pkg_wrap_xff.welcome_in('xifenfei');
welcome xifenfei
PL/SQL procedure successfully completed.
3.查看包内容
SQL> SELECT TEXT FROM dba_source a WHERE a.name='PKG_WRAP_XFF';
TEXT
--------------------------------------------------------------
package pkg_wrap_xff is
procedure welcome_in(abc in varchar2);
END pkg_wrap_xff;
package body pkg_wrap_xff is
procedure welcome_in(abc in varchar2) as
begin
dbms_output.put_line('welcome ' || abc);
end;
END pkg_wrap_xff;
9 rows selected.
4.使用wrap加密
[oracle@bas ~]$ wrap iname=pkg_wrap_xff.sql oname=pkg_wrap_xff.plb PL/SQL Wrapper: Release 10.2.0.1.0- 64bit Production on Tue Apr 03 11:16:52 2012 Copyright (c) 1993, 2004, Oracle. All rights reserved. Processing pkg_wrap_xff.sql to pkg_wrap_xff.plb [oracle@bas ~]$ ll pkg_wrap_xff* -rw-r--r-- 1 oracle oinstall 634 Apr 3 11:16 pkg_wrap_xff.plb -rw-r--r-- 1 oracle oinstall 273 Apr 3 10:58 pkg_wrap_xff.sql [oracle@bas ~]$ more pkg_wrap_xff.plb create or replace package pkg_wrap_xff wrapped a000000 1 abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd 9 53 85 W36vGRTVGRHdbwYRR6PgEKn/uJgwg1zZf9OpynQ2Z/aHUmNhYcN/NpFphdvMis61lthVP41T adMRoYz9KTALorx2DjxUFXms0VvEXmDignlfcQjICNxh0Rmhsp2KsCjohpTO / create or replace package body pkg_wrap_xff wrapped a000000 1 abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd b 96 ce QzGnt9RcmxQyUfes+xtqkeZypV0wg1zwqNPWfI6iCq2Ve93Dd2BzFE8hHRRYZ/LM86Rx2o0E y67F1TM7QgP9WoGRBCUelGt4QvSOmwMecLCe57PVPD5lbxyJLK26scjDS8soGPzcCDysP+WR C0zeZ9lSlyLXqNex8XpUxi7tILux/gNr1FIOWaBRhYqgTZ754pVDNlG4SXE= /
4.测试加密包
SQL> drop package PKG_WRAP_XFF;
Package dropped.
SQL> @pkg_wrap_xff.plb
Package created.
Package body created.
SQL> set serveroutput on
PL/SQL procedure successfully completed.
SQL> exec pkg_wrap_xff.welcome_in('www.xifenfei.com');
welcome www.xifenfei.com
PL/SQL procedure successfully completed.
查看加密包内容
SQL> set pagesize 1000 SQL> SELECT TEXT FROM dba_source a WHERE a.name='PKG_WRAP_XFF'; TEXT -------------------------------------------------------------------------------- package pkg_wrap_xff wrapped a000000 1 abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd 9 53 85 W36vGRTVGRHdbwYRR6PgEKn/uJgwg1zZf9OpynQ2Z/aHUmNhYcN/NpFphdvMis61lthVP41T adMRoYz9KTALorx2DjxUFXms0VvEXmDignlfcQjICNxh0Rmhsp2KsCjohpTO package body pkg_wrap_xff wrapped a000000 1 abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd abcd b 96 ce QzGnt9RcmxQyUfes+xtqkeZypV0wg1zwqNPWfI6iCq2Ve93Dd2BzFE8hHRRYZ/LM86Rx2o0E y67F1TM7QgP9WoGRBCUelGt4QvSOmwMecLCe57PVPD5lbxyJLK26scjDS8soGPzcCDysP+WR C0zeZ9lSlyLXqNex8XpUxi7tILux/gNr1FIOWaBRhYqgTZ754pVDNlG4SXE=
原则上来说wrap加密是不可逆的过程，所以可以通过使用wrap加密，实现了屏蔽代码的作用，确保了自己的知识产权。其实oracle本身很多的系统包也是通过这种方法进行加密处理，以保护oracle的产权。
wrap加密原理
Oracle加密的原理就是先对源码进行lz压缩lzstr，然后对压缩数据进行SHA-1运算得到40位的加密串shstr，然后将加密串与压缩串拼接得到shstr+lzstr，然后对拼接后的字符串进行Oracle双字符转换（转换表）。最后将转换后的字符串进行base64编码，最终得到wrap的加密串。
Great! 正在找这方面的资料，谢谢！