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Posts Tagged ‘hash’

SHA-256 Hash in Oracle 10g

Posted by David Faber on August 24, 2012

It’s been a while since I’ve posted, and I’m not certain when I will get back to posting regularly (sorry!), but I came across an issue yesterday and found a blog post that was too good not to bring to others’ attention. I was looking to hash a column in Oracle with the SHA-2 256-bit hash function but that is not available in Oracle 10g.

The key to accomplishing this is found in the ability to load Java classes into Oracle and create Oracle functions based on the methods of those classes.

vnull – SHA1, SHA256, SHA512 in Oracle for free without using DBMS_CRYPTO

Incidentally, according to this post on the Oracle forums, the DBMS_CRYPTO package is certainly included in all editions of Oracle 11g, not just Enterprise Edition. There is nothing in the Oracle licensing information that would suggest that DBMS_CRYPTO is not available on Standard Edition, Standard Edition One, etc.

Having these encryption algorithms available within the Oracle DBMS is certainly helpful as it allows data to be encrypted or hashed via database triggers and the like.

To test your SHA-256 hash results, try the following link: SHA-256 Cryptographic Hash Algorithm.

If SHA-256 is not strong enough for you, SHA-512 is also included in the GNU Crypto project.

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