How to generate my own certificate using cert-tool

Technical
1

Hi everyone,

I try generate of certificate using the cert-tool, but when I run the cert-tool not generate nothing.
I followed the quick start and I did see example of cert-tools, how to generate my own certifycate in format JSON

regards
Angel

2

Follow the instructions on github it works for me.

For step by step, it works for me on Ubuntu

cd ~
git clone GitHub - blockchain-certificates/cert-tools: Command line tools for designing certificate templates and instantiating a certificate batch && cd cert-tools
sudo pip install .

You need to modify conf.ini (mine looks like this ################################ TEMPLATE CREATION CONFIG ################## - Pastebin.com )
Take note that I removed something on the default config and I added the full path of some configs.

then run ,

create-certificate-template -c conf.ini

This will create the template ~/cert-tools/sample_data/certificate_templates/test.json

Then modify your roster

vi /home/[youruser]/cert-tools/sample_data/rosters/game_of_thrones_live_roster.csv

Finally

cd ~/cert-tools/
instantiate-certificate-batch -c conf.ini

This will create an unsigned certificate and will be stored in ~/cert-tools/sample_data/unsigned_certificates

3

thank you reypadilla.

I run the script in Debian 9, and its work fine, but I can’t build unsigned certificate in unsigned_certificates folder, in mi conf.ini in the path roster,
roster = /home/ngel/Documents/Projects/Blockcert-CertTools/cert-tools/sample_data/rosters/utepsa.csv

when I run cd ~/cert-tools/
instantiate-certificate-batch -c conf.ini

the result is like this:

Writing certificates to /home/ngel/Documents/Projects/Blockcert-CertTools/cert-tools/sample_data/unsigned_certificates
Traceback (most recent call last):
File “/usr/local/bin/instantiate-certificate-batch”, line 11, in
sys.exit(main())
File “/usr/local/lib/python2.7/dist-packages/cert_tools/instantiate_v2_certificate_batch.py”, line 130, in main
create_unsigned_certificates_from_roster(conf)
File “/usr/local/lib/python2.7/dist-packages/cert_tools/instantiate_v2_certificate_batch.py”, line 84, in create_unsigned_certificates_from_roster
with open(roster, ‘r’) as theFile:
IOError: [Errno 2] No such file or directory: ‘/home/ngel/Documents/Projects/Blockcert-CertTools/cert-tools/sample_data/rosters/utepsa.csv’

I understand that this line instantiate-certificate-batch -c conf.ini, build automaticly a utepsa.csv file, like when I run create-certificate-template -c conf.ini, but it don’t do that, please help me

and do you tell me please the next questions:

1.- what is this or what it mean badge_id = 82a4c9f2-3588-457b-80ea-da695571b8fc this badge_id is generated for who?

thanks for your time

regards
Angel

4

Hi Angel,

instantiate-certificate-batch -c conf.in doesn’t automatically build the .csv file. You need to provide the roster (that .csv file) with the fields (name, last name, identity, etc…) for each of your certificates.

Regards,
Gabriel

5

Gabriel is correct you need your csv file. I think its on the step by step I said that you need to modify your roster.
I’m not sure about the badge id, I think it maybe connected to something else. I just leave it as is in my test.

6

Thanks everyone for helping out! batchId is used to populate the id field on the badge class, as required by open badges. At a high level, if there is a URL describing the badge (accomplishment/certificate) generally at the batch level (i.e. not per recipient), you can point to that. Otherwise, give it a GUID. This is required by Open Badges. See the Open Badges spec for details.

For testing purposes, you can use the value in the config file.

1 Like
7

Hi Kim.

thansk for your time, but then bagde_id is generated for the openbadges don’t you?, I mean when created new certificates, how to recover de bagde_id from openbadges?.

and could you explain me of the confi.ini file please.

regards.
Angel

1 Like
8

Hi Angel,
Open Badges doesn’t create the badge id; they only require that an issuer create it in a specific format (in order to comply with Open Badge standards).

So, for example, you can use an online GUID generator example of one to obtain a value to use in the conf.ini file.

About the conf.ini file – it sounds like I need to improve the documentation on that. I’ll open an issue, but let me know if you have any other specific questions.

Thanks,
Kim