Updating the Strength of Public and Private RSA keys

The size of the RSA public key for the MegaRAID Software Manager software is upgraded from 1024 to 2048. The public key communicates with the client (GUI) and the server (Framework Service and Pop-up Process). Because of this change, you must upgrade the renewal process across the client (GUI) and the server (Framework Service and Pop-up Process) with the new key. The same subnet might have a mixed-mode of installation, which might have the latest software version with the renewed key size of 2048 and older versions with the key size of 1024. It also might contain different versions of clients and servers. This situation poses a compatibility issue in the mixed-mode installation because the old public key (size 1024) cannot perform a handshake with latest public key (2048) as an artifact of cryptography. To address this compatibility issue, with a known limitation that both the keys cannot be loaded concurrently, you must edit the vivaldikey.properties file for vivaldikey selection to manage both the old and the new installation.

The following figure shows how the handshake works after editing the vivaldikey.

Figure 6. Vivaldikey Handshake