35 lines
1.2 KiB
PowerShell
35 lines
1.2 KiB
PowerShell
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Write-Host 'Checks first 5 characters of the SHA1 hash against haveibeenpwned.com API.'
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Write-Host 'Enter an empty password or close the window to exit.'
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while ($true) {
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$string = Read-Host -Prompt "`nPassword to check"
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if (-not $string) {
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Write-Host 'No password entered. Exiting..'
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exit
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}
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$bytes = [System.Text.Encoding]::UTF8.GetBytes($string)
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$sha1 = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider
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$data = $sha1.ComputeHash($bytes)
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$result = ($data | ForEach-Object ToString X2) -join ''
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$head = $result.Substring(0,5)
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$tail = $result.Substring(5)
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[Net.ServicePointManager]::SecurityProtocol = "TLS12, TLS11, TLS, SSL3"
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$request = [System.Net.WebRequest]::Create("https://api.pwnedpasswords.com/range/" + $head)
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$reader = New-Object System.IO.StreamReader(($request.GetResponse()).GetResponseStream())
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$found = 0
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while ($null -ne ($line = $reader.ReadLine())) {
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if (($split = $line.Split(':'))[0] -eq $tail) {
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Write-Host "That password has been compromised. Occurrences:" $split[1]
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$found = 1
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break
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}
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}
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if ($found -eq 0) { Write-Host "That password was not found." }
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$reader.Close()
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}
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