[1] JCS - JSON Cleartext Signature ( 版) <https://cyberphone.github.io/openkeystore/resources/docs/jcs.html>
[2] JSON Signatures () <https://cyberphone.github.io/doc/security/jsonsignatures.html>
[3] JCS - JSON Cleartext Signature () <https://cyberphone.github.io/doc/security/jcs.html>
[4] Release Candidate - JSON Cleartext Signature (Anders Rundgren著, ) <https://lists.w3.org/Archives/Public/public-webapps/2017AprJun/0093.html>