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NeuronButter/pemtob64.ps1

Created December 9, 2025 00:46
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PEM to RSAParameters
Raw
pemtob64.ps1
$pem = Get-Content "path.pem" -Raw
$pem = $pem -replace "-----BEGIN PUBLIC KEY-----", ""
$pem = $pem -replace "-----END PUBLIC KEY-----", ""
$pem = $pem -replace "\s+", ""
$bytes = [System.Convert]::FromBase64String($pem)
$rsa = [System.Security.Cryptography.RSA]::Create()
$rsa.ImportSubjectPublicKeyInfo($bytes, [ref]0)
$n = [Convert]::ToBase64String($rsa.ExportParameters($false).Modulus)
$e = [Convert]::ToBase64String($rsa.ExportParameters($false).Exponent)
Write-Output "`nExponent: $e`n`nModulus: $n`n"
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