Utility.PS

1.0.8

New-SecureStringKey.ps1

                                <#

.SYNOPSIS

    Generate random key for securestring encryption.

.DESCRIPTION

    Generate random key for securestring encryption.

.EXAMPLE

    PS C:\>New-SecureStringKey

    Generate random 16 byte (128-bit) key.

.EXAMPLE

    PS C:\>$SecureKey = New-SecureStringKey -Length 32

    PS C:\>$SecureString = ConvertTo-SecureString "Super Secret String" -AsPlainText -Force

    PS C:\>$EncryptedSecureString = ConvertFrom-SecureString $SecureString -SecureKey $SecureKey

    PS C:\>$DecryptedSecureString = ConvertTo-SecureString $EncryptedSecureString -SecureKey $SecureKey

    PS C:\>ConvertFrom-SecureStringAsPlainText $DecryptedSecureString

    Generate random 32 byte (256-bit) key and use it to encrypt another string.

#>

function New-SecureStringKey {

    param

    (

        # Key length

        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true)]

        [ValidateSet(16, 24, 32)]

        [int] $Length = 16

    )

    [byte[]] $Key = Get-Random -InputObject ((0..255)*$Length) -Count $Length

    [securestring] $SecureKey = ConvertTo-SecureString -String ([System.Text.Encoding]::ASCII.GetString($Key)) -AsPlainText -Force

    return $SecureKey

}

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