綾小路龍之介の素人思考

[pgp] 副鍵(sub)の削除

GnuPGで登録した副鍵を削除する方法。登録済みの副鍵は任意のタイミングで削除できる。

まずは現在の鍵の情報を確認。今のところ副鍵は2つ。

$ gpg --list-key XXXXXXXX
pub   4096R/XXXXXXXX 2012-02-10
uid                  AYANOKOUZI, Ryuunosuke
uid                  AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>
sub   4096R/YYYYYYYY 2012-02-10
sub   2048R/ZZZZZZZZ 2012-02-10

この鍵からさ以後に追加された副鍵を削除する。

$ gpg --edit-key XXXXXXXX
gpg (GnuPG) 1.4.10; Copyright (C) 2008 Free Software Foundation, Inc.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Secret key is available.

pub  4096R/XXXXXXXX  created: 2012-02-10  expires: never       usage: SC
                     trust: ultimate      validity: ultimate
sub  4096R/YYYYYYYY  created: 2012-02-10  expires: never       usage: E
sub  2048R/ZZZZZZZZ  created: 2012-02-10  expires: never       usage: S
[ultimate] (1). AYANOKOUZI, Ryuunosuke
[ultimate] (2)  AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>

gpg> key 2

pub  4096R/XXXXXXXX  created: 2012-02-10  expires: never       usage: SC
                     trust: ultimate      validity: ultimate
sub  4096R/YYYYYYYY  created: 2012-02-10  expires: never       usage: E
sub* 2048R/ZZZZZZZZ  created: 2012-02-10  expires: never       usage: S
[ultimate] (1). AYANOKOUZI, Ryuunosuke
[ultimate] (2)  AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>

gpg> delkey
Do you really want to delete this key? (y/N) y

pub  4096R/XXXXXXXX  created: 2012-02-10  expires: never       usage: SC
                     trust: ultimate      validity: ultimate
sub  4096R/YYYYYYYY  created: 2012-02-10  expires: never       usage: E
[ultimate] (1). AYANOKOUZI, Ryuunosuke
[ultimate] (2)  AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>

gpg> quit
Save changes? (y/N) y

最後に変更内容の確認。副鍵が削除されたことがわかる。

$ gpg --list-key XXXXXXXX
pub   4096R/XXXXXXXX 2012-02-10
uid                  AYANOKOUZI, Ryuunosuke
uid                  AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>
sub   4096R/YYYYYYYY 2012-02-10

リファレンス

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  2. 研修で教えてくれない!:第18回「PGP? S/MIME? 電子署名の違いを学ぶ」 - ITmedia Biz.ID
  3. What is "PGP"
  4. How to add and delete key components with GnuPG

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ChangeLog

  1. Posted: 2010-04-17T08:46:14+09:00
  2. Modified: 2010-04-17T08:46:14+09:00
  3. Generated: 2017-03-14T23:09:16+09:00