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# frozen_string_literal: true
require 'openssl'
class X509
def self.self_signed(key: OpenSSL::PKey::RSA.new(4096))
certificate = OpenSSL::X509::Certificate.new
certificate.subject = certificate.issuer = OpenSSL::X509::Name.parse("/C=/ST=/L=/O=/OU=/CN=")
certificate.not_before = Time.now.to_i
certificate.not_after = Time.now.to_i + 600
certificate.public_key = key.public_key
certificate.serial = 0x01
certificate.version = 2
certificate.sign(key, OpenSSL::Digest::SHA256.new)
certificate
end
end
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