mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-12-25 16:18:55 +01:00
53 lines
1.8 KiB
PowerShell
Executable File
53 lines
1.8 KiB
PowerShell
Executable File
<#
|
|
.SYNOPSIS
|
|
Checks a password
|
|
.DESCRIPTION
|
|
This PowerShell script checks the security status of the given password by haveibeenpwned.com
|
|
.EXAMPLE
|
|
PS> ./check-password qwerty
|
|
⚠️ Bad password, it's already listed in 10584568 known security breaches!
|
|
.LINK
|
|
https://github.com/fleschutz/PowerShell
|
|
.NOTES
|
|
Author: Markus Fleschutz | License: CC0
|
|
#>
|
|
|
|
param([string]$password = "")
|
|
|
|
function CalculateHashSHA1 ([string]$string) {
|
|
$sha1 = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider
|
|
$encoder = New-Object System.Text.UTF8Encoding
|
|
$bytes = $encoder.GetBytes($string)
|
|
$hash = ($sha1.ComputeHash($bytes) | % { $_.ToString("X2") }) -join ''
|
|
return $hash
|
|
}
|
|
|
|
function Get-PasswordPwnCount { [CmdletBinding()] param([string]$pass)
|
|
$hash = CalculateHashSHA1 $pass
|
|
try {
|
|
$uri = "https://api.pwnedpasswords.com/range/$($hash.Substring(0,5))"
|
|
$list = -split (Invoke-RestMethod $uri -Verbose:($PSBoundParameters['Verbose'] -eq $true) -ErrorAction Stop) # split into separate strings
|
|
$pwn = $list | Select-String $hash.Substring(5,35) # grep
|
|
if ($pwn) { $count = [int] ($pwn.ToString().Split(':')[1]) } else { $count = 0 }
|
|
return $count
|
|
}
|
|
catch {
|
|
Write-Error "Error Calling HIBP API"
|
|
return $null
|
|
}
|
|
}
|
|
|
|
try {
|
|
if ($password -eq "") { $password = Read-Host "Enter the password" }
|
|
$NumBreaches = Get-PasswordPwnCount $password
|
|
if ($NumBreaches -eq 0) {
|
|
"👍 Password seems good, it's not listed in any known security breach as of today."
|
|
} else {
|
|
"⚠️ Bad password, it's listed already in $NumBreaches known security breaches!"
|
|
}
|
|
exit 0 # success
|
|
} catch {
|
|
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
|
|
exit 1
|
|
}
|