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generate ssl certs
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# GENERATE CERTIFICATES | |
require 'openssl' | |
class CertGenerator | |
def self.generate | |
CertGenerator.new.generate | |
end | |
def generate | |
create_ca_key | |
generate_ca_csr | |
generate_ca_cert | |
save_ca_cert | |
create_client_key | |
generate_client_cert | |
sign_client_cert | |
save_client_cert | |
end | |
private | |
def initialize | |
subject = 'C=PL/ST=Mazowsze/O=Test Sp. z o.o./OU=IT/CN=Test CA/emailAddress=test@test.com' | |
@name = OpenSSL::X509::Name.parse subject | |
@cert_destination = "/certs" | |
FileUtils.mkdir_p(spec_relative_path(@cert_destination)) | |
@expired_cert_destination = "/certs/expired" | |
FileUtils.mkdir_p(spec_relative_path(@expired_cert_destination)) | |
end | |
def create_ca_key | |
@ca_key = OpenSSL::PKey::RSA.new 2048 | |
end | |
def generate_ca_csr | |
ca_csr = OpenSSL::X509::Request.new | |
ca_csr.version = 0 | |
ca_csr.subject = @name | |
ca_csr.public_key = @ca_key.public_key | |
ca_csr.sign @ca_key, OpenSSL::Digest::SHA1.new | |
@ca_csr = ca_csr | |
end | |
def generate_ca_cert | |
ca_cert = OpenSSL::X509::Certificate.new | |
ca_cert.version = 2 | |
ca_cert.serial = 0 | |
ca_cert.not_before = Time.now | |
ca_cert.not_after = ca_cert.not_before + 1 * 365 * 24 * 60 * 60 # 1 years validity | |
ca_cert.public_key = @ca_key.public_key | |
ca_cert.subject = @name | |
ca_cert.issuer = @name | |
ef = OpenSSL::X509::ExtensionFactory.new | |
ef.subject_certificate = ca_cert | |
ef.issuer_certificate = ca_cert | |
ca_cert.add_extension(ef.create_extension("basicConstraints","CA:TRUE",true)) | |
ca_cert.add_extension(ef.create_extension("keyUsage","keyCertSign, cRLSign", true)) | |
ca_cert.add_extension(ef.create_extension("subjectKeyIdentifier","hash",false)) | |
ca_cert.add_extension(ef.create_extension("authorityKeyIdentifier","keyid:always",false)) | |
ca_cert.sign(@ca_key, OpenSSL::Digest::SHA256.new) | |
@ca_cert = ca_cert | |
end | |
def save_ca_cert | |
ca_cert_path = spec_relative_path("#{@cert_destination}/root.pem") | |
File.open(ca_cert_path, 'w+') do |file| | |
file.write(@ca_cert.to_text) | |
file.write(@ca_cert.to_pem) | |
file.close | |
end | |
end | |
def create_client_key | |
@client_key = OpenSSL::PKey::RSA.new 2048 | |
end | |
def generate_client_cert | |
client_cert = OpenSSL::X509::Certificate.new | |
client_cert.version = 2 | |
client_cert.serial = 2 | |
client_cert.subject = @name | |
client_cert.issuer = @ca_cert.subject # root CA is the issuer | |
client_cert.public_key = @client_key.public_key | |
client_cert.not_before = Time.now | |
client_cert.not_after = client_cert.not_before + 1 * 365 * 24 * 60 * 60 # 1 years validity | |
ef = OpenSSL::X509::ExtensionFactory.new | |
ef.subject_certificate = client_cert | |
ef.issuer_certificate = @ca_cert | |
client_cert.add_extension(ef.create_extension("keyUsage","digitalSignature", true)) | |
client_cert.add_extension(ef.create_extension("subjectKeyIdentifier","hash",false)) | |
@client_cert = client_cert | |
end | |
def sign_client_cert | |
@client_cert.sign(@ca_key, OpenSSL::Digest::SHA256.new) | |
end | |
def save_client_cert | |
cert_path = spec_relative_path("#{@cert_destination}/client.pem") | |
File.open(cert_path, 'w+') do |file| | |
file.write(@client_key.to_pem) | |
file.write(@client_cert.to_pem) | |
file.close | |
end | |
end | |
def spec_relative_path(relative_path) | |
File.join( File.dirname(__FILE__), relative_path ) | |
end | |
end |
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