Is there an MD5 Sum function in PL/SQL

问题

In Oracle SQL, is there an MD5 function or something available to me? I would like to do something like...

select name, md5_sum( name ) from person;

回答1:

See this Tahiti Link. Under MD5 Procedures and Functions it says These subprograms generate MD5 hashes of data. The MD5 algorithm ensures data integrity by generating a 128-bit cryptographic message digest value from given data.

Also note, that DBMS_OBFUSCATION_TOOLKIT is deprecated and can/should be replaced with DBMS_CRYPTO, see this Tahiti Link

回答2:

You may want to check the DBMS_OBFUSCATION_TOOLKIT.MD5 procedure.

Here is an example:

     SQL> column md5_val FORMAT A40
     SQL> SELECT DBMS_OBFUSCATION_TOOLKIT.md5 (input => UTL_RAW.cast_to_raw('Eddie')) md5_val
       2    FROM DUAL;
     MD5_VAL
     ----------------------------------------
     E5F6C83E6E97C74FC9E9760FC8972AED

     1 row selected.

回答3:

In 12c you can use STANDARD_HASH. It's available by default, does not require any PL/SQL objects or hard-coded values, and is not deprecated.

SQL> select standard_hash('Finally, an easy way to do this.', 'MD5') md5
  2  from dual;

MD5
--------------------------------
456E4D024B4BB704169E21DEB895B0E2

回答4:

don't think it comes with it right out of box. you need to define your own.

来源：https://stackoverflow.com/questions/8827184/is-there-an-md5-sum-function-in-pl-sql