This is Crypt::CBC, a Perl-only implementation of the cryptographic cipher block chaining mode (CBC). In combination with a block cipher such as Crypt::DES or Crypt::IDEA, you can encrypt and decrypt messages of arbitrarily long length. The encrypted messages are compatible with the encryption format used by SSLeay. In addition to this module you will need to install the MD5 module, and one or more of the Crypt::DES, Crypt::IDEA, or Crypt::Blowfish modules.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.