Very nice.
1. At the moment Cayenne is clever enough not to save objects to the database
if no actual changes are made to that object in the context. Will this
encryption change this in any way? Will Cayenne still know which objects are
unchanged?
2. Why did you decide to go down the regex path instead of some annotation or
property in the model to decide which columns to encrypt?
3. What happens with searching on these columns? Does your patch address any
strategy to perform queries in memory or is that up to the developer to sort
out?
Ari
On 4/04/2014 11:21pm, Andrus Adamchik wrote:
> So the crypto module is done and available on trunk. Here is a minimal
> configuration that will do AES/CBC encryption:
>
> 1. Create a keystore and generate a secret key in it:
>
> keytool -genseckey -keystore /tmp/ks1.jceks -storetype JCEKS -alias mykey
>
> 2. Start Cayenne with crypto:
>
> // this can also be a URL or a String representing URL
> File keyStore = new File("/tmp/ks1.jceks”);
>
> // obtain this somehow
> char[] keyPassword = ..
>
> // “mykey” is the key alias in #1
> Module crypto = new CryptoModuleBuilder().keyStore(keyStore, keyPassword,
> “mykey").build();
>
> // this will enable encryption/decryption for all columns matching ^CRYPTO_
> regex
> // those must be either character or binary columns
> ServerRuntime runtime = new ServerRuntime(“cayenne-myproject.xml", crypto);
>
>
> So just 3 lines of code give you the encryption. Of course it is fully
> customizable. See ‘CryptoModuleBuilder’ for what can be extended. Also the
> code is pretty raw, so it may break or may be refactored as we find bugs. I
> still need to study the performance and tweak as needed. Also there are
> certain strategies are not yet available. E.g. we only support block ciphers
> in CBC mode (as this is what I am planning to use in my apps). We will add
> support for ECB and also streaming ciphers eventually.
>
> But … everyone is free to give it a try ;)
>
> Andrus
>
--
-------------------------->
Aristedes Maniatis
GPG fingerprint CBFB 84B4 738D 4E87 5E5C 5EFA EF6A 7D2E 3E49 102A
