Man pages matching name crypt::dsa::key::ssh2 in section 3pm:

Crypt::DSA::Key::SSH2.3pm.en	debian 10 / libcrypt-dsa-perl
Crypt::DSA::Key::SSH2.3pm.en	debian 11 / libcrypt-dsa-perl
Crypt::DSA::Key::SSH2.3pm.en	debian 12 / libcrypt-dsa-perl