Certificate-based authentication in IOT Protocols - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to load a client certificate file for authentication.

IOT Protocols

client_cert = open('[1]', 'rb').read()

Drag options to blanks, or click blank then click option'

Aclient.crt

Bserver.crt

Cca.pem

Dclient.key

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing the private key file instead of the certificate file.

The client certificate file usually has a .crt extension and is used to authenticate the client.

2fill in blank

medium

Complete the code to specify the CA certificate file for verifying the server.

IOT Protocols

ca_cert_path = '[1]'

Drag options to blanks, or click blank then click option'

Aserver.key

Bclient.crt

Cclient.key

Dca.pem

Attempts:

3 left

💡 Hint

Common Mistakes

Using the client certificate or key instead of the CA certificate.

The CA certificate file is used to verify the server's identity and usually has a .pem extension.

3fill in blank

hard

Fix the error in the TLS context setup by completing the missing method call.

IOT Protocols

tls_context.load_cert_chain(certfile='[1]', keyfile='client.key')

Drag options to blanks, or click blank then click option'

Aca.pem

Bclient.crt

Cserver.crt

Dclient.key

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the CA certificate or key file as the certificate file.

The load_cert_chain method requires the client certificate file as certfile and the private key file as keyfile.

4fill in blank

hard

Fill both blanks to create a dictionary with client certificate and key paths.

IOT Protocols

cert_info = {'cert': '[1]', 'key': '[2]'}

Drag options to blanks, or click blank then click option'

Aclient.crt

Bclient.key

Cserver.crt

Dca.pem

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up certificate and key file names.

The cert key holds the client certificate path, and the key key holds the client private key path.

5fill in blank

hard

Fill all three blanks to configure TLS with certificate, key, and CA files.

IOT Protocols

tls_config = {
  'certfile': '[1]',
  'keyfile': '[2]',
  'cafile': '[3]'
}

Drag options to blanks, or click blank then click option'

Aclient.crt

Bclient.key

Cca.pem

Dserver.key

Attempts:

3 left

💡 Hint

Common Mistakes

Using server key or wrong files for these keys.

The certfile is the client certificate, keyfile is the client private key, and cafile is the CA certificate file.