Backup-AzKeyVaultKey
Backs up a key in a key vault.
Syntax
Backup-AzKeyVaultKey
[-VaultName] <String>
[-Name] <String>
[[-OutputFile] <String>]
[-Force]
[-DefaultProfile <IAzureContextContainer>]
[-WhatIf]
[-Confirm]
[<CommonParameters>] Backup-AzKeyVaultKey
-HsmName <String>
[-Name] <String>
[[-OutputFile] <String>]
[-Force]
[-DefaultProfile <IAzureContextContainer>]
[-WhatIf]
[-Confirm]
[<CommonParameters>] Backup-AzKeyVaultKey
[-InputObject] <PSKeyVaultKeyIdentityItem>
[[-OutputFile] <String>]
[-Force]
[-DefaultProfile <IAzureContextContainer>]
[-WhatIf]
[-Confirm]
[<CommonParameters>] Description
The Backup-AzKeyVaultKey cmdlet backs up a specified key in a key vault by downloading it and storing it in a file. If there are multiple versions of the key, all versions are included in the backup. Because the downloaded content is encrypted, it cannot be used outside of Azure Key Vault. You can restore a backed-up key to any key vault in the subscription that it was backed up from. Typical reasons to use this cmdlet are:
You want to escrow a copy of your key, so that you have an offline copy in case you accidentally delete your key in your key vault.
You created a key using Key Vault and now want to clone the key into a different Azure region, so that you can use it from all instances of your distributed application. Use the Backup-AzKeyVaultKey cmdlet to retrieve the key in encrypted format and then use the Restore-AzKeyVaultKey cmdlet and specify a key vault in the second region.
Examples
Example 1: Back up a key with an automatically generated file name
Backup-AzKeyVaultKey -VaultName 'MyKeyVault' -Name 'MyKey'
C:\Users\username\mykeyvault-mykey-1527029447.01191This command retrieves the key named MyKey from the key vault named MyKeyVault and saves a backup of that key to a file that is automatically named for you, and displays the file name.
Example 2: Back up a key to a specified file name
Backup-AzKeyVaultKey -VaultName 'MyKeyVault' -Name 'MyKey' -OutputFile 'C:\Backup.blob'
C:\Backup.blobThis command retrieves the key named MyKey from the key vaultnamed MyKeyVault and saves a backup of that key to a file named Backup.blob.
Example 3: Back up a previously retrieved key to a specified file name, overwriting the destination file without prompting.
$key = Get-AzKeyVaultKey -VaultName 'MyKeyVault' -Name 'MyKey'
Backup-AzKeyVaultKey -Key $key -OutputFile 'C:\Backup.blob' -Force
C:\Backup.blobThis command creates a backup of the key named $key.Name in the vault named $key.VaultName to a file named Backup.blob, silently overwriting the file if it exists already.
Parameters
-Confirm
Prompts you for confirmation before running the cmdlet.
| Type: | SwitchParameter |
| Aliases: | cf |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-DefaultProfile
The credentials, account, tenant, and subscription used for communication with azure
| Type: | IAzureContextContainer |
| Aliases: | AzContext, AzureRmContext, AzureCredential |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Force
Overwrite the given file if it exists
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-HsmName
HSM name. Cmdlet constructs the FQDN of a managed HSM based on the name and currently selected environment.
| Type: | String |
| Position: | Named |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-InputObject
Key bundle to back up, pipelined in from the output of a retrieval call.
| Type: | PSKeyVaultKeyIdentityItem |
| Aliases: | Key |
| Position: | 0 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-Name
Specifies the name of the key to back up.
| Type: | String |
| Aliases: | KeyName |
| Position: | 1 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-OutputFile
Specifies the output file in which the backup blob is stored. If you do not specify this parameter, this cmdlet generates a file name for you. If you specify the name of an existing output file, the operation will not complete and returns an error message that the backup file already exists.
| Type: | String |
| Position: | 2 |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-VaultName
Specifies the name of the key vault that contains the key to back up.
| Type: | String |
| Position: | 0 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
| Type: | SwitchParameter |
| Aliases: | wi |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
