Man pages matching name net::ssh::authorizedkey::ssh1 in section 3pm:

Net::SSH::AuthorizedKey::SSH1.3pm.en	debian 10 / libnet-ssh-authorizedkeysfile-perl
Net::SSH::AuthorizedKey::SSH1.3pm.en	debian 11 / libnet-ssh-authorizedkeysfile-perl
Net::SSH::AuthorizedKey::SSH1.3pm.en	debian 12 / libnet-ssh-authorizedkeysfile-perl