Man pages matching name crypt::checksum::crc32 in section 3pm:

Crypt::Checksum::CRC32.3pm.en	debian 10 / libcryptx-perl
Crypt::Checksum::CRC32.3pm.en	debian 11 / libcryptx-perl
Crypt::Checksum::CRC32.3pm.en	debian 12 / libcryptx-perl