libnss3-tools 2:3.21-1ubuntu1 (amd64 binary) in ubuntu xenial

 This is a set of tools on top of the Network Security Service libraries.
 This package includes:
  * certutil: manages certificate and key databases (cert7.db and key3.db)
  * modutil: manages the database of PKCS11 modules (secmod.db)
  * pk12util: imports/exports keys and certificates between the cert/key
    databases and files in PKCS12 format.
  * shlibsign: creates .chk files for use in FIPS mode.
  * signtool: creates digitally-signed jar archives containing files and/or
    code.
  * ssltap: proxy requests for an SSL server and display the contents of
    the messages exchanged between the client and server.