Key rotation concepts in Azure - Step-by-Step Execution

Process Flow - Key rotation concepts

Start: Key in use

↓

Check rotation schedule

↓

Is rotation due?

No→Continue using current key

Yes↓

Generate new key

↓

Update services to use new key

↓

Retire old key

↓

End: New key active

This flow shows how a key is regularly checked and replaced with a new one to keep systems secure.

Execution Sample

Azure

1. Check if key rotation is due
2. If yes, generate new key
3. Update services to use new key
4. Retire old key

This simple process ensures keys are replaced regularly to maintain security.

Process Table

Step	Action	Condition	Result	Next Step
1	Check rotation schedule	Rotation due?	No	Continue using current key
2	Check rotation schedule	Rotation due?	Yes	Generate new key
3	Generate new key	N/A	New key created	Update services
4	Update services	N/A	Services use new key	Retire old key
5	Retire old key	N/A	Old key disabled	End process
6	End process	N/A	New key active and in use	Process complete

💡 Process ends when new key is active and old key is retired

Status Tracker

Variable	Start	After Step 2	After Step 3	After Step 4	Final
CurrentKey	OldKey	OldKey	NewKey	NewKey	NewKey
RotationDue	False	True	True	True	False
ServiceKey	OldKey	OldKey	NewKey	NewKey	NewKey

Key Moments - 3 Insights

Why do we check if rotation is due before generating a new key?

To avoid unnecessary key changes and ensure keys are rotated only when scheduled, as shown in step 1 and 2 of the execution table.

What happens if services are not updated to use the new key?

Services will continue using the old key, which may be retired later causing failures. Step 4 ensures services switch to the new key.

Why do we retire the old key after updating services?

Retiring the old key after services switch prevents unauthorized use and maintains security, as shown in step 5.

Visual Quiz - 3 Questions

Look at the execution table, what is the result at step 3?

A Services updated to new key

B New key created

C Old key retired

D Rotation not due

💡 Hint

Check the 'Result' column in row for step 3 in execution_table

At which step does the system update services to use the new key?

A Step 2

B Step 3

C Step 4

D Step 5

💡 Hint

Look at the 'Action' column in execution_table to find when services switch keys

If rotation is not due, what does the system do according to the execution table?

A Continue using current key

B Generate new key immediately

C Retire old key

D Update services to new key

💡 Hint

See step 1 in execution_table where condition is 'No'

Concept Snapshot

Key rotation means regularly replacing keys to keep systems secure.
Check if rotation is due before creating a new key.
Generate new key and update services to use it.
Retire old key only after services switch.
This prevents service disruption and improves security.

Full Transcript

Key rotation is a process to keep security strong by changing keys regularly. First, the system checks if it is time to rotate the key. If not, it keeps using the current key. If yes, it creates a new key, updates all services to use this new key, and then retires the old key. This order ensures services do not break and security is maintained. The execution table shows each step clearly, and the variable tracker shows how keys and service settings change over time.

Practice

1. What is the main purpose of key rotation in Azure Key Vault?

easy

A. To share keys with other users

B. To delete all keys after use

C. To backup keys to local storage

D. To regularly change keys to improve security

Solution

1. Step 1: Understand key rotation purpose

   Key rotation means changing keys regularly to reduce risk if keys are exposed.

2. Step 2: Identify correct purpose in options

   Only To regularly change keys to improve security describes improving security by changing keys regularly.

3. Final Answer:

   To regularly change keys to improve security -> Option D

4. Quick Check:

   Key rotation = improve security by changing keys regularly [OK]

Hint: Key rotation means changing keys often for safety [OK]

Common Mistakes:

• Thinking key rotation deletes keys
• Confusing key rotation with key sharing
• Believing key rotation backs up keys

2. Which Azure CLI command is used to rotate a key in Azure Key Vault?

easy

A. az keyvault key create

B. az keyvault key update

C. az keyvault key rotate

D. az keyvault key delete

Solution

1. Step 1: Recall Azure CLI commands for key management

   To rotate a key, you create a new version using 'az keyvault key create'.

2. Step 2: Match command to rotation action

   'az keyvault key rotate' does not exist; 'create' is correct for rotation.

3. Final Answer:

   az keyvault key create -> Option A

4. Quick Check:

   Rotate key = create new version command [OK]

Hint: Use 'create' command to rotate keys in Azure CLI [OK]

Common Mistakes:

• Using 'update' instead of 'create' for rotation
• Assuming 'rotate' is a valid CLI command
• Confusing 'delete' with rotation

3. Given this Azure CLI command sequence:

az keyvault key create --vault-name MyVault --name MyKey --protection software
az keyvault key update --vault-name MyVault --name MyKey --ops encrypt decrypt sign verify

What is the expected result after running these commands?

medium

A. The key MyKey is deleted from MyVault

B. A new key named MyKey is created and its operations are updated

C. The key MyKey is backed up locally

D. An error occurs because update cannot change operations

Solution

1. Step 1: Analyze the create command

   The first command creates a key named MyKey in MyVault with software protection.

2. Step 2: Analyze the update command

   The update command changes the key's allowed operations to encrypt, decrypt, sign, and verify.

3. Final Answer:

   A new key named MyKey is created and its operations are updated -> Option B

4. Quick Check:

   Create then update key operations = success [OK]

Hint: Create key first, then update operations to rotate [OK]

Common Mistakes:

• Thinking update deletes the key
• Assuming update backs up the key
• Believing update cannot change operations

4. You try to rotate a key using this command:

az keyvault key rotate --vault-name MyVault --name MyKey

But you get an error saying the command is not found. What is the likely cause?

medium

A. The 'rotate' command does not exist in Azure CLI for keys

B. The vault name is incorrect

C. The key name is missing

D. You need to delete the key before rotating

Solution

1. Step 1: Check Azure CLI command availability

   Azure CLI does not have a 'key rotate' command for Key Vault keys.

2. Step 2: Identify correct rotation method

   Rotation is done by creating a new version or updating the key, not by a rotate command.

3. Final Answer:

   The 'rotate' command does not exist in Azure CLI for keys -> Option A

4. Quick Check:

   No 'rotate' command in Azure CLI keys [OK]

Hint: No 'rotate' command; use update or create new version [OK]

Common Mistakes:

• Assuming 'rotate' command exists
• Blaming vault or key name for syntax errors
• Trying to delete key before rotation

5. You want to automate key rotation in Azure Key Vault without downtime. Which approach is best?

hard

A. Export keys locally and re-import after rotation

B. Delete the old key and create a new key with the same name immediately

C. Create a new key version and update applications to use it before deleting old key

D. Manually update keys once a year during maintenance windows

Solution

1. Step 1: Understand zero downtime rotation

   Creating a new key version allows apps to switch smoothly without service interruption.

2. Step 2: Evaluate options for automation and safety

   Deleting keys immediately causes downtime; manual yearly updates risk security; exporting keys is insecure.

3. Final Answer:

   Create a new key version and update applications to use it before deleting old key -> Option C

4. Quick Check:

   New version + update apps = smooth rotation [OK]

Hint: Use new key version and switch apps before deleting old key [OK]

Common Mistakes:

• Deleting old key before switching
• Relying on manual yearly rotation
• Exporting keys outside Key Vault