SQL> DECLARE

2??? input_string???? VARCHAR2(30) := '需要加密的內容';

3??? raw_input??????? RAW(128) := UTL_RAW.CAST_TO_RAW(input_string);

4??? --將需要加密的內容轉換成RAW格式

5??? raw_key????????? RAW(256);

6??? encrypted_raw??? RAW(2048);

7??? encrypted_string VARCHAR2(2048);

8??? decrypted_raw??? RAW(2048);

9??? decrypted_string VARCHAR2(2048);

10

11? BEGIN

12??? dbms_output.put_line('> ========= Get Key Bytes =========');

13

14??? raw_key := dbms_crypto.randombytes(24);

15??? --隨機生成的48位字符密匙

16??? dbms_output.put_line('> Key String length: ' || UTL_RAW.LENGTH(raw_key));

17??? dbms_output.put_line('> Key String: ' || UTL_RAW.CAST_TO_VARCHAR2(raw_key));

18??? dbms_output.put_line('> Input String: ' || input_string);

19??? dbms_output.put_line('> ========= BEGIN TEST Encrypt =========');

20??? --加密

21??? encrypted_raw := dbms_crypto.Encrypt(src => raw_input,

22???????????????????????????????????????? typ => DBMS_CRYPTO.DES3_CBC_PKCS5,

23???????????????????????????????????????? key => raw_key);

24

25??? dbms_output.put_line('> Encrypted hex value : ' || rawtohex(UTL_RAW.CAST_TO_RAW(encrypted_raw)));

26??? dbms_output.put_line('> Encrypted varchar2 value: ' || UTL_RAW.CAST_TO_VARCHAR2(encrypted_raw));

27??? --解密

28??? decrypted_raw := dbms_crypto.Decrypt(src => encrypted_raw,

29???????????????????????????????????????? typ => DBMS_CRYPTO.DES3_CBC_PKCS5,

30???????????????????????????????????????? key => raw_key);

31??? --將解密后的RAW轉換成String

32??? decrypted_string := UTL_RAW.CAST_TO_VARCHAR2(decrypted_raw);

33

34??? dbms_output.put_line('> Decrypted string output : ' || decrypted_string);

35

36??? if input_string = decrypted_string THEN

37????? dbms_output.put_line('> String DES Encyption and Decryption successful');

38??? END if;

39? END;

40? /

> ========= Get Key Bytes =========

> Key String length: 24

> Key String: 峈報T??崛╭顋賣I~漥?篻

> Input String: 需要加密的內容

> ========= BEGIN TEST Encrypt =========

> Encrypted hex value : 374132424133453633303945433530364534414334443943303346343735303643464630393330313436454441443930

> Encrypted varchar2 value: z+ｆ0炁洮M?魎橡?F憝

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