# Generate

- [File Extensions](/yubikey5/piv-1/generate/file-extensions.md): Quick reference to the various file extension types.
- [With OpenSSL](/yubikey5/piv-1/generate/with-openssl.md)
- [distinguished\_name](/yubikey5/piv-1/generate/with-openssl/distinguished_name.md): The Distinguished Name is a set of values entered during enrollment and the creation of a Certificate Signing Request (CSR).
- [keyUsage](/yubikey5/piv-1/generate/with-openssl/keyusage.md): A list of keyUsage values to use with OpenSSL.
- [extendedKeyUsage](/yubikey5/piv-1/generate/with-openssl/extendedkeyusage.md): A list of extendedKeyUsage values to use with OpenSSL.
- [With XCA](/yubikey5/piv-1/generate/with-xca.md)