Data verification process for the encrypted data (CV AES software encryption)

Hello Community,

I am planning to configure Commvault software encryption with

Cipher: AES;

Length: 128;

Direct media access: No access.

Can you provide me with more information on how the integrity of encrypted data is verified during the data verification process?
Specifically, are there any performance implications such as increased CPU/memory usage on the CommServe/Media Agent server or longer data verification completion times when compared to regular data verification processes? thanks