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snyff/pem_to_jwt.rb

Created June 13, 2020 22:20
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pem_to_jwt.rb
k = OpenSSL::PKey::RSA.new File.read 'private.pem'
pub = k.public_key
jwks = {
"keys"=> [
{
"kty"=> "RSA",
"use"=> "sig",
"alg": "RS256",
"kid"=> "pentesterlab",
"n" => Base64.urlsafe_encode64(pub.n.to_s(2), padding: false),
"e" => Base64.urlsafe_encode64(pub.e.to_s(2), padding: false)
}
]
}
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