Changing ring Dimension

Library Questions
1

Hello,

So I need to change the ring dimension to test the performance I can get in my algorithms relative to the security level. But I can’t find where in the source code the decision for the ring dimension is made.

Can someone point out where the selection is made and if there are any functions I can call to change when creating the crypto context?

I have found where the standard parameter values are (github link) and also found the factory for the element parameters (github link). If I can’t find any way to do it with OpenFHE functions, should I do it in one of these files?

2

If you want to set the ring dimension for a power-of-2 value of your choice, you can do the following.

CCParams<CryptoContextXXXXXXX> parameters; // use the relevant cryptocontext parameters
parameters.SetSecurityLevel(HEStd_NotSet); // disable security
parameters.SetRingDim( yourRingDimValue ); // a power of 2 integer

Note that we do not recommend this hack, as sufficient security may not be achieved. Use it at your own risk.

3

Thank you so much, I’m using this for testing purposes in my thesis :slight_smile: