[1] RFC 3161 - Internet X.509 Public Key Infrastructure Time-Stamp Protocol (TSP), , https://tools.ietf.org/html/rfc3161
[4] RFC Errata Report » RFC Editor, https://www.rfc-editor.org/errata_search.php?rfc=3161
[5] RFC 3628 - Policy Requirements for Time-Stamping Authorities (TSAs), , https://tools.ietf.org/html/rfc3628
[7] JNSA PKI SandBox Project Main Page, , http://eswg.jnsa.org/sandbox/index.html