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param([String]$filename="", [Int32]$filesize=0, [String]$hashvalue="", [String]$hashname="SHA512")
Function Get-FileHashWin7([String] $FileName, $HashName) {
$FileStream = New-Object System.IO.FileStream($FileName,[System.IO.FileMode]::Open)
$StringBuilder = New-Object System.Text.StringBuilder
[System.Security.Cryptography.HashAlgorithm]::Create($HashName).ComputeHash($FileStream)|%{[Void]$StringBuilder.Append($_.ToString("x2"))}
$FileStream.Close()
$StringBuilder.ToString()
}
Write-Output "Verify " $filename
if ((Get-Item $filename).length -ne $filesize) {
Write-Output "Failed " $filename
exit 1
}
if ((Get-FileHashWin7 $filename $hashname) -ne $hashvalue) {
Write-Output "Failed " $filename
exit 1
}
exit 0
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