Man pages matching name data::entropy::rawsource::cryptcounter in section 3pm:

Data::Entropy::RawSource::CryptCounter.3pm.en	debian 10 / libdata-entropy-perl
Data::Entropy::RawSource::CryptCounter.3pm.en	debian 11 / libdata-entropy-perl
Data::Entropy::RawSource::CryptCounter.3pm.en	debian 12 / libdata-entropy-perl