- 自定义函数的方式:
CREATE OR REPLACE function
ds_func_encrypt_des(p_text varchar2, p_key varchar2) return varchar2 is
v_text varchar2(4000);
v_key varchar2(4000);
v_enc varchar2(4000);
raw_input RAW(20000) ;
key_input RAW(1000) ;
decrypted_raw RAW(20000);
v_ErrorText varchar2(500);
begin
if(p_text is null or p_text = '' )
then return '';
end if;
if(lengthb(p_key)<8)
then v_key := lpad(p_key,8,'0');
else v_key := p_key;
end if;
dbms_output.put_line(p_text);
v_text := rpad( p_text, (trunc(lengthb(p_text)/8)+1)*8, chr(0));
dbms_output.put_line(v_text);
raw_input := UTL_I18N.STRING_TO_RAW(v_text,'ZHS16GBK');
key_input := UTL_I18N.STRING_TO_RAW(v_key,'ZHS16GBK');
dbms_obfuscation_toolkit.DESEncrypt(input => raw_input,key => key_input,encrypted_data =>decrypted_raw);
v_enc := rawtohex(decrypted_raw);
dbms_output.put_line(v_enc);
return v_enc;
exception
when others then
RAISE_APPLICATION_ERROR(SQLCODE, SQLERRM, TRUE);
end;
select ds_func_encrypt_des('我爱中国I Love China 521','ECMPMAIN') from dual;
CREATE OR REPLACE function ds_func_decrypt_des(p_text varchar2, p_key varchar2) return varchar2 is
v_text varchar2(4000);
v_key varchar2(4000);
p_text_raw RAW(20000);
p_key_raw RAW(20000);
v_text_raw RAW(20000);
v_ErrorText varchar2(500);
begin
if(p_text is null or p_text = '' )
then return '';
end if;
if(lengthb(p_key)<8)
then v_key := lpad(p_key,8,'0');
else v_key := p_key;
end if;
p_text_raw := HEXTORAW(p_text);
p_key_raw := UTL_I18N.STRING_TO_RAW(v_key, 'ZHS16GBK');
dbms_obfuscation_toolkit.DESDECRYPT(input => p_text_raw, key =>p_key_raw, decrypted_data=> v_text_raw);
v_text := UTL_I18N.RAW_TO_CHAR(v_text_raw, 'ZHS16GBK');
dbms_output.put_line(v_text);
return rtrim(v_text,chr(0));
exception
when others then
RAISE_APPLICATION_ERROR(SQLCODE, SQLERRM, TRUE);
end;
select ds_func_decrypt_des('60B593D9FA437A6EBCD6E84C2F12AAD22B7482E483DD2167B022FEF426D1D9CC','ECMPMAIN') from dual;
p_text:加密字段
p_key:加密密钥(防止加密被容易破解,最短8位 可以通过length函数判断然后进行lpad/rpad补齐,不过要记住,否则无法解密)
SELECT * FROM PRODUCT_COMPONENT_VERSION;
DROP FUNCTION DS_FUNC_ENCRYPT_DES;
DROP FUNCTION DS_FUNC_DECRYPT_DES;
- SQL的方式:
2.1 不使用密钥key:
select select utl_raw.cast_to_varchar2(utl_encode.base64_encode(utl_raw.cast_to_raw('我爱中国I Love China 521'))) from dual;
select utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('5oiR54ix5Lit5Zu9SSBMb3ZlIENoaW5hIDUyMQ=='))) from dual;
2.2 使用密钥key:
select utl_raw.cast_to_varchar2(utl_encode.base64_encode(utl_raw.cast_to_raw('ECMP' ||'我爱中国I Love China 521'))) from dual;
select substr((select utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('RUNNUOaIkeeIseS4reWbvUkgTG92ZSBDaGluYSA1MjE='))) from dual), LENGTH('ECMP')+1) from dual;