This project publishes shell scripts and configuration files to generate 802.1AR Device Certificates using openssl. The project also includes the shell scripts for TLSA records generation to publish client certificates or public keys in DevID format as specified in [1].
This project is part of the Trustworthy Network Of Things project at NIST. Please see the following link:
Trustworthy Networks of Things
Edit the config following files and change fields as appropriate:
config/config_iDevID.conf
config/config_Intermediate.conf
config/config_Root.conf
To generate root CA use following command:
./RootID.sh -config "config file" -cn "Common Name" -out "output Folder Name"
Example:
./RootID.sh -config config/config_Root.conf -out test -cn root
Check the ca directory. The root certificate has the name test/ca/certs/root.cert.pem. The common name is used to name the root certificate.
Next, (optionally) generate intermediate certificates.To generate Intermediate CA use following command:
./IntermediateCert.sh -config config_Intermediate.conf -cacert "root ca cert" -caprivate "root ca private key" -cn "Common Name" -out "output Folder Name"
example:
./IntermediateCert.sh -config config/config_Intermediate.conf -cacert test/ca/certs/root.cert.pem -caprivate test/ca/private/root.key.pem -cn Intrmdt -out test
Finally generate the iDevUD using the following command:
./iDevIDcert.sh -config config_iDevID.conf -cacert "ca cert" -caprivate "ca private key" -cachain "ca chain cert" -cn "Common Name" -out "output Folder Name"
Example:
./iDevIDcert.sh -config config/config_iDevID.conf -cacert test/Intermediate/certs/Intrmdt.cert.pem -caprivate test/Intermediate/private/Intrmdt.key.pem -cachain test/Intermediate/certs/Intrmdt.chain.cert.pem -out test -cn DevID
You can use the root cert directly if you do not want intermediate certificates. For example:
./iDevIDcert.sh -config config/config_iDevID.conf -cacert test/ca/certs/root.cert.pem -caprivate test/ca/private/root.key.pem -out test -cn DevID
In order to convert key or cert from pem to der use the following command:
./pemTOder.sh -filetype "key/cert" -in "input pem key path" -out "output der key path"
Example:
./pemTOder.sh -filetype key -in test/iDevID/private/DevID.key.pem -out test/iDevID/private/DevID.key.der
./pemTOder.sh -filetype cert -in test/iDevID/certs/DevID.cert.pem -out test/iDevID/certs/DevID.cert.der
Demo Scripts that do the above steps and clean up unncessary files:
rm -rf test1
sh gencerts-example.sh
The following works with intermediate certificates:
rm -rf test2
sh gencerts-example1.sh
To generate TLSA record use following command:
./TLSARR.sh -device "device name" -domain "organization" -usage "PKIX-TA / PKIX-EE / DANE-TA / DANE-EE" -selector "full-cert / spk" -matching "no-hash / sha256 / sha512" -cert "iDevID pem certificate"
Example:
./TLSARR.sh -device sensor7 -domain example.com -usage DANE-EE -selector spk -matching sha512 -cert test/iDevID/certs/DevID.cert.pem
These scripts have been tested with openssl 1.1.1
The scripts in this repository were obtained from
The openssl configuration for the MUDSIGNER extensions were contributed by Eliot Lear (Cisco).
[1] S. Huque, V. Dukhovni , IETF Draft (2020). TLS Client Authentication via DANE TLSA records. https://tools.ietf.org/id/draft-huque-dane-client-cert-04.html
The following disclaimer applies to all code that was written by employees of the National Institute of Standards and Technology.
This software was developed by employees of the National Institute of Standards and Technology (NIST), an agency of the Federal Government and is being made available as a public service. Pursuant to title 17 United States Code Section 105, works of NIST employees are not subject to copyright protection in the United States. This software may be subject to foreign copyright. Permission in the United States and in foreign countries, to the extent that NIST may hold copyright, to use, copy, modify, create derivative works, and distribute this software and its documentation without fee is hereby granted on a non-exclusive basis, provided that this notice and disclaimer of warranty appears in all copies.
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