This counter tracks how many RSA digital signatures this module has verified, counted since it last became active. This is the receive-side counterpart to RSA signing, since every certificate-authenticated peer's signature needs to be verified locally, so comparing this to ccaAcclRSASignings shows whether this device is more often the one proving its identity or checking others'. On a VPN hub authenticating many remote spokes via certificates, an admin would expect this counter to significantly outpace RSA signings, since the hub verifies many peer signatures for each signature it generates itself.