30 lines
790 B
Ruby
30 lines
790 B
Ruby
|
# frozen_string_literal: true
|
||
|
|
|
||
|
|
require 'openssl'
|
||
|
|
|
||
|
|
module Gitlab
|
||
|
|
module Email
|
||
|
|
module Smime
|
||
|
|
# Tooling for signing and verifying data with SMIME
|
||
|
|
class Signer
|
||
|
|
include OpenSSL
|
||
|
|
|
||
|
|
def self.sign(cert:, key:, data:)
|
||
|
|
signed_data = PKCS7.sign(cert, key, data, nil, PKCS7::DETACHED)
|
||
|
|
PKCS7.write_smime(signed_data)
|
||
|
|
end
|
||
|
|
|
||
|
|
# return nil if data cannot be verified, otherwise the signed content data
|
||
|
|
def self.verify_signature(cert:, ca_cert: nil, signed_data:)
|
||
|
|
store = X509::Store.new
|
||
|
|
store.set_default_paths
|
||
|
|
store.add_cert(ca_cert) if ca_cert
|
||
|
|
|
||
|
|
signed_smime = PKCS7.read_smime(signed_data)
|
||
|
|
signed_smime if signed_smime.verify([cert], store)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|