Functions/Convert-SecureStringTo32ByteKey.ps1
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<#
.SYNOPSIS Convert a secure string to a byte array. .DESCRIPTION Convert the supplied secure string to a 32 byte array. .PARAMETER SecureString A secure string object. .EXAMPLE Convert-SecureStringTo32ByteKey -SecureString ( ConvertTo-SecureString -String 'Pr3$haredK3y' -AsPlainText -Force ) #> function Convert-SecureStringTo32ByteKey { [CmdletBinding()] param ( [Parameter(Mandatory=$true,ValueFromPipeline=$True,Position=1)] [ValidateNotNullOrEmpty()] [System.Security.SecureString] $SecureString ) $hasher = New-Object -TypeName System.Security.Cryptography.SHA256CryptoServiceProvider try { $bstr = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($SecureString) $hasher.ComputeHash( [System.Text.Encoding]::UTF8.GetBytes([Runtime.InteropServices.Marshal]::PtrToStringAuto($bstr))) } catch { throw $_ } finally { [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($bstr) $hasher.Dispose() } } |