Storing keys and certificates in Azure - Step-by-Step Execution

Process Flow - Storing keys and certificates

Start

↓

Create Key Vault

↓

Add Key or Certificate

↓

Set Access Policies

↓

Use Key/Certificate in App

↓

Rotate or Update

↓

End

This flow shows creating a secure vault, adding keys or certificates, setting who can use them, then using and updating them safely.

Execution Sample

Azure

az keyvault create --name MyVault --resource-group MyGroup --location eastus
az keyvault certificate import --vault-name MyVault --name MyCert --file cert.pem
az keyvault set-policy --name MyVault --upn [e-mail] --certificate-permissions get list
az keyvault certificate show --vault-name MyVault --name MyCert

This code creates a vault, imports a certificate, sets user permissions, and retrieves the certificate.

Process Table

Step	Action	Command/Operation	Result	Notes
1	Create Key Vault	az keyvault create --name MyVault --resource-group MyGroup --location eastus	Vault 'MyVault' created	Vault ready to store keys and certificates
2	Import Certificate	az keyvault certificate import --vault-name MyVault --name MyCert --file cert.pem	Certificate 'MyCert' imported	Certificate stored securely in vault
3	Set Access Policy	az keyvault set-policy --name MyVault --upn [e-mail] --certificate-permissions get list	Access policy set for [e-mail]	User can get and list certificates
4	Retrieve Certificate	az keyvault certificate show --vault-name MyVault --name MyCert	Certificate data returned	User accesses certificate securely
5	End	-	-	Process complete

💡 All steps completed successfully; keys and certificates stored and accessible with proper permissions.

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	Final
VaultName	None	MyVault	MyVault	MyVault	MyVault	MyVault
CertificateName	None	None	MyCert	MyCert	MyCert	MyCert
AccessPolicy	None	None	None	User [e-mail] with get,list	User [e-mail] with get,list	User [e-mail] with get,list
CertificateData	None	None	None	None	Certificate content	Certificate content

Key Moments - 2 Insights

Why do we need to set access policies after importing the certificate?

Access policies control who can use or see the keys and certificates. Without setting them (see step 3 in execution_table), no one except the vault owner can access the stored secrets.

What happens if we try to retrieve a certificate before importing it?

The retrieval would fail because the certificate does not exist yet in the vault. Step 4 depends on step 2 completing successfully.

Visual Quiz - 3 Questions

Look at the execution table, what is the result of step 2?

A Certificate 'MyCert' imported

B Vault 'MyVault' created

C Access policy set for [e-mail]

D Certificate data returned

💡 Hint

Check the 'Result' column for step 2 in the execution_table.

At which step does the user gain permission to access the certificate?

A Step 1

B Step 2

C Step 3

D Step 4

💡 Hint

Look at the 'Action' and 'Result' columns in the execution_table for when access policies are set.

If the access policy was not set, what would happen at step 4?

A Certificate would be retrieved successfully

B Access denied error

C Vault would be deleted

D Certificate would be automatically imported

💡 Hint

Refer to the key_moments section about access policies and step 4 in execution_table.

Concept Snapshot

Storing keys and certificates in Azure Key Vault:
- Create a Key Vault to hold secrets securely.
- Import or create keys/certificates inside the vault.
- Set access policies to control who can use them.
- Retrieve keys/certificates securely in your apps.
- Rotate or update keys/certificates as needed.

Full Transcript

This lesson shows how to store keys and certificates securely in Azure Key Vault. First, you create a vault to hold your secrets. Then you import a certificate file into the vault. Next, you set access policies to allow specific users to get or list the secrets. Finally, authorized users can retrieve the certificate securely. This process ensures your keys and certificates are protected and only accessible by those with permission.

Practice

1. What is the main purpose of storing keys and certificates in Azure Key Vault?

easy

A. To monitor network traffic in Azure

B. To increase the speed of Azure virtual machines

C. To create backups of Azure databases automatically

D. To securely store and manage sensitive information like keys and certificates

Solution

1. Step 1: Understand the role of Azure Key Vault

   Azure Key Vault is designed to keep sensitive data like keys and certificates safe and controlled.

2. Step 2: Identify the correct purpose

   The options describing VM speed, database backups, and network monitoring relate to other Azure services or functions.

3. Final Answer:

   To securely store and manage sensitive information like keys and certificates -> Option D

4. Quick Check:

   Key Vault = Secure storage [OK]

Hint: Key Vault is for secrets, not speed or backups [OK]

Common Mistakes:

• Confusing Key Vault with backup services
• Thinking Key Vault speeds up VMs
• Assuming Key Vault monitors network

2. Which Azure CLI command correctly creates a new Key Vault named MyVault in the resource group MyGroup located in eastus?

easy

A. az keyvault new --vault-name MyVault --group MyGroup --region eastus

B. az vault create --name MyVault --resource-group MyGroup --location eastus

C. az keyvault create --name MyVault --resource-group MyGroup --location eastus

D. az keyvault create --vault MyVault --resource-group MyGroup --location eastus

Solution

1. Step 1: Recall correct Azure CLI syntax for Key Vault creation

   The correct command uses az keyvault create with parameters --name, --resource-group, and --location.

2. Step 2: Compare options

   az keyvault create --name MyVault --resource-group MyGroup --location eastus matches the correct syntax exactly. The other options use incorrect commands like az keyvault new or az vault create, or wrong parameter names like --vault-name, --group, or --vault.

3. Final Answer:

   az keyvault create --name MyVault --resource-group MyGroup --location eastus -> Option C

4. Quick Check:

   Correct CLI syntax = az keyvault create --name MyVault --resource-group MyGroup --location eastus [OK]

Hint: Use 'az keyvault create' with --name, --resource-group, --location [OK]

Common Mistakes:

• Using 'az keyvault new' instead of 'create'
• Wrong parameter names like --vault or --group
• Confusing 'vault' and 'keyvault' commands

3. Given this Azure CLI command sequence:
az keyvault secret set --vault-name MyVault --name ApiKey --value "12345"
What will be the result when you run az keyvault secret show --vault-name MyVault --name ApiKey?

medium

A. It will display the secret value "12345" along with metadata

B. It will return an error because secrets cannot be retrieved

C. It will show an empty secret value

D. It will delete the secret named ApiKey

Solution

1. Step 1: Understand secret creation and retrieval

   The first command stores a secret named ApiKey with value "12345" in MyVault. The second command retrieves that secret.

2. Step 2: Predict the output of secret show command

   The show command returns the secret's value and metadata. It does not delete or error unless permissions are missing.

3. Final Answer:

   It will display the secret value "12345" along with metadata -> Option A

4. Quick Check:

   Secret show returns stored value [OK]

Hint: Secret show command retrieves stored secret value [OK]

Common Mistakes:

• Thinking secrets cannot be retrieved
• Expecting deletion on show command
• Assuming empty value if not specified

4. You run this command to create a certificate in Azure Key Vault:
az keyvault certificate create --vault-name MyVault --name MyCert --policy @policy.json
But you get an error saying the policy file is invalid. What is the most likely cause?

medium

A. The JSON file policy.json has syntax errors or incorrect structure

B. The vault name MyVault does not exist

C. The certificate name MyCert is already in use

D. The Azure CLI is not installed

Solution

1. Step 1: Analyze the error message about invalid policy file

   The error points to the policy file being invalid, which usually means JSON syntax or structure issues.

2. Step 2: Consider other options

   While vault existence or name conflicts cause errors, the message specifically mentions the policy file. CLI installation issues would prevent any command from running.

3. Final Answer:

   The JSON file policy.json has syntax errors or incorrect structure -> Option A

4. Quick Check:

   Invalid policy file = JSON syntax error [OK]

Hint: Check JSON file syntax if policy error occurs [OK]

Common Mistakes:

• Ignoring JSON syntax errors
• Assuming vault or name issues without checking file
• Not validating JSON before use

5. You want to automate deployment of an Azure Key Vault with a certificate and restrict access so only a specific app can use the certificate. Which combination of steps is best practice?

hard

A. Create Key Vault; disable all access policies; share certificate via email

B. Create Key Vault with access policies granting the app permission; upload certificate; avoid storing secrets in code

C. Create Key Vault; upload certificate; embed certificate value directly in app code

D. Create Key Vault; store certificate value as a secret; give all users access to the vault

Solution

1. Step 1: Securely create Key Vault and upload certificate

   Create the vault and add the certificate properly to keep it safe and managed.

2. Step 2: Set access policies to restrict usage to the specific app and avoid secrets in code

   Grant only the app needed permissions and never put secrets or certificates directly in code to prevent leaks.

3. Final Answer:

   Create Key Vault with access policies granting the app permission; upload certificate; avoid storing secrets in code -> Option B

4. Quick Check:

   Restrict access + no secrets in code = Create Key Vault with access policies granting the app permission; upload certificate; avoid storing secrets in code [OK]

Hint: Use access policies and never embed secrets in code [OK]

Common Mistakes:

• Giving broad access to all users
• Embedding secrets directly in application code
• Disabling access policies and sharing insecurely