For Cloak's embedded `internal/ecdh` implementation (`wsddn/go-ecdh`), the upstream BSD-3-Clause text uses this source-specific condition 3 in place of condition 3 in the shared BSD-3-Clause text:

    * Neither the name of tang0th nor the names of its contributors may be
      used to endorse or promote products derived from this software without
      specific prior written permission.
