New-ColumnMasterKey

DBSystems: Creates a new SQL Server database column master key

Script

#Requires -Version 5.0
#Requires -Modules SQLServer

[CmdLetBinding()]
Param(
    [Parameter(Mandatory = $true)]   
    [string]$ServerInstance,    
    [Parameter(Mandatory = $true)]   
    [string]$DatabaseName,    
    [Parameter(Mandatory = $true)]  
    [string]$KeyName,
    [Parameter(Mandatory = $true)]  
    [ValidateSet('CurrentUser','LocalMachine')]
    [string]$CertificateStoreLocation = 'LocalMachine',
    [Parameter(Mandatory = $true)]  
    [string]$CertificateThumbprint,
    [pscredential]$ServerCredential,
    [int]$ConnectionTimeout = 30
)

function Get-SqlServerInstanceInternal {
    [CmdLetBinding()]
    Param(
        [Parameter(Mandatory = $true)]   
        [string]$ServerInstance,    
        [pscredential]$ServerCredential,
        [int]$ConnectionTimeout = 30
    )
    try {
        [hashtable]$cmdArgs = @{
            'ErrorAction' = 'Stop'
            'Confirm' = $false
            'ServerInstance' = $ServerInstance
            'ConnectionTimeout' = $ConnectionTimeout
        }
        if ($null -ne $ServerCredential) {
            $cmdArgs.Add('Credential', $ServerCredential)
        }
        return Get-SqlInstance @cmdArgs
    } catch {
        throw
    }
}

function Get-SqlDatabaseInternal {
    [CmdLetBinding()]
    Param(
        [Parameter(Mandatory = $true)]   
        [object]$ServerInstance,    
        [Parameter(Mandatory = $true)]   
        [string]$DatabaseName
    )
    try {
        [hashtable]$cmdArgs = @{
            'ErrorAction' = 'Stop'
            'InputObject' = $ServerInstance
            'Name' = $DatabaseName
            'Confirm' = $false
        }
        return Get-SqlDatabase @cmdArgs
    } catch {
        throw
    }
}

Import-Module SQLServer

try {
    $instance = Get-SqlServerInstanceInternal -ServerInstance $ServerInstance -ServerCredential $ServerCredential -ConnectionTimeout $ConnectionTimeout
    $db = Get-SqlDatabaseInternal -DatabaseName $DatabaseName -ServerInstance $instance

    $CmkSettings = New-SqlCertificateStoreColumnMasterKeySettings -CertificateStoreLocation $CertificateStoreLocation -Thumbprint $CertificateThumbprint -ErrorAction Stop
    $result = New-SqlColumnMasterKey -Name $KeyName -ColumnMasterKeySettings $CmkSettings -InputObject $db -ErrorAction Stop
        
    Write-Output $result
} catch {
    throw
}

Customize

ServerInstance string

Specifies the name of the target computer including the instance name, e.g. MyServer\Instance

DatabaseName string

KeyName string

Specifies the name of the new column master key object

CertificateStoreLocation string

CertificateThumbprint string

Specifies the thumbprint of the certificate to use as the master key

ServerCredential pscredential

Specifies a PSCredential object for the connection to the SQL Server. ServerCredential is ONLY used for SQL Logins. When you are using Windows Authentication you don't specify -Credential. It is picked up from your current login.

ConnectionTimeout int

Specifies the time period to retry the command on the target server