Comodo OCSP Test

*ocsptest.rb

require "openssl"

begin
    require "faraday"
rescue LoadError
    puts "You need the 'faraday' gem for making HTTP requests. Run 'gem install faraday'"
    exit 1
end

DIGEST = OpenSSL::Digest::SHA256

subject  = OpenSSL::X509::Certificate.new(File.read("subject.pem"))
issuer   = OpenSSL::X509::Certificate.new(File.read("issuer.pem"))

# parsed  from AIA extension of subject. hard coded here for brevity
ocsp_uri = "http://ocsp.comodoca.com"

certificate_id = OpenSSL::OCSP::CertificateId.new(subject, issuer, DIGEST.new)

ocsp_request = OpenSSL::OCSP::Request.new
ocsp_request.add_certid(certificate_id)
ocsp_request.add_nonce

http_response = Faraday.post(ocsp_uri) do |http_request|
    http_request.options.timeout = 5
    http_request.body = ocsp_request.to_der
    http_request.headers["Content-Type"] = "application/ocsp-request"
end

ocsp_response = OpenSSL::OCSP::Response.new(http_response.body)
puts ocsp_response.status_string

issuer.pem

-----BEGIN CERTIFICATE-----
MIIF5jCCA86gAwIBAgIQapvhODv/K2ufAdXZuKdSVjANBgkqhkiG9w0BAQwFADCB
hTELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G
A1UEBxMHU2FsZm9yZDEaMBgGA1UEChMRQ09NT0RPIENBIExpbWl0ZWQxKzApBgNV
BAMTIkNPTU9ETyBSU0EgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNMTMwMTEw
MDAwMDAwWhcNMjgwMTA5MjM1OTU5WjCBlzELMAkGA1UEBhMCR0IxGzAZBgNVBAgT
EkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR
Q09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0EgQ2xpZW50IEF1
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AQUAA4IBDwAwggEKAoIBAQC+s55XrCh2dUAWxzgDmNPGGHYhUPMleQtMtaDRfTpY
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wFrf1XTCwa2QZYL55AqLPikFlgqOtzk06kb2qvGlnHJvijjI03BOrNpo+kZGpcHs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-----END CERTIFICATE-----

subject.pem

-----BEGIN CERTIFICATE-----
MIIFMzCCBBugAwIBAgIQKOqD6V0HOM2JrSJy2Ji4NTANBgkqhkiG9w0BAQsFADCB
lzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G
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qSVLy70wQL7An1xgUbqNAW9+uAVLhO13CtE/OgnaqKoHOg4SxrUXDWXMSOIyltcl
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ZpDagl1rSY8xqot3Lu1poQbVfZ00pzmzggKmh10Rt9Hy/lBCF3yJOmBvjs6ICwU4
FcauQDxfP3ACESYW5lYpvQL4yE1p+8iOJ824oVkk+7FC+9i4nnrd
-----END CERTIFICATE-----