function Get-Sha256Hash {
    <#
.SYNOPSIS
    Get the SHA-256 hash of a value

.PARAMETER Value
    Value to hash
#>
    [CmdletBinding()]
    Param(
        [string]$Value
    )

    [System.Reflection.Assembly]::LoadWithPartialName("System.Security") | Out-Null

    try {
        $hash = [System.Security.Cryptography.SHA256Managed]::Create()
        $enc = [System.Text.Encoding]::UTF8
        $bytes = ($hash.ComputeHash($enc.GetBytes($Value)))

        $machineKeySb = New-Object System.Text.StringBuilder(256)

        for ($i = 0; $i -lt $bytes.Length; $i++) {
            $machineKeySb.Append(("{0:X2}" -f $bytes[$i])) | Out-Null
        }

        return $machineKeySb.ToString()
    }
    finally {
        if ($null -ne $hash) {
            $hash.Dispose()
        }
    }
}