信頼できるタイムスタンプ - フォーマットについて(RFC3161)
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15-11-2019 - |
質問
[ edit :すべてを詳細に説明するBlogPostを書いた:ここで見てください]
RFC3161に基づく信頼できるタイムスタンプのためのサービスを構築しようとしています。私は zeitstempel.dfn.de で無料の信頼できるタイムスタンプサービスを使用することにしました。
ここで
.
MessageImprint ::= SEQUENCE {
hashAlgorithm AlgorithmIdentifier,
hashedMessage OCTET STRING }
クライアントを見つけました。
それでもなお、私はTimestampサービスの要求をどのように構築するべきかわかりません。
雑談
解決
I'm glad that you find our software helpful. But you refer to our old service. Please visit www.ntp.org.pl - you'll find there the latest version of timestamping client and a lot of other useful free software related to time topic.
I'm not sure what you want to do. Maybe if you give a few more details, I'd be able to help you better. Anyway, I'll give you some hints, where to find some precious information.
Firs of all, you should look at OpenSSL project: http://www.openssl.org/docs/apps/ts.html# There is an example, how to create TSRequest. The request is stored in file, so you can read it's content. Later, you can send request to the server using this: http://www.openssl.org/docs/apps/tsget.html#
Antoher trick you can do is to install some sniffer (for example Wireshark - www.wireshark.org/ ), start our client from www.ntp.org.pl , send request, then find proper packet in wireshark to see what it contains.
Feel free to ask, if you have some additional questions. Please, give some more information about your service.