每个 OpenPGP 密钥有一个主密钥仅用于签名,子密钥用于加密和签名。这样一来,如果您的子密钥有问题时,您不必撤消您的主密钥。
- ID
-
这是子密钥的标识。
- Type
-
指定用于生成子密钥的加密算法,DSA 密钥仅用于签名,ElGamal 密钥用于加密,在 RSA 密钥用于签名或加密时。
- Created
-
密钥的创建日期。
- Expires
-
标识密钥不能再使用的日期。
- Status
-
指示密钥的状态。
- Strength
-
Indicates the length in bits of the key. In general the longer the key, the more security it
provides.
A long key is not enough to make up for the use of a weak passphrase.
要添加一个子密钥,在 子密钥 面板里点击 添加 按钮。
按照上面的介绍操作,您会看到一个对话框,各个文本框的介绍如下:
- 密钥类型
-
指定生成子密钥的加密算法。
- DSA
-
使用 数字签名算法 (DSA) 来创建子密钥,它仅用于签名。
- ElGamal
-
使用 ElGamal 算法来创建子密钥,它仅用于加密。
- RSA
-
使用 Rivest-Shamir Adleman (RSA) 算法创建子密钥,这个子密钥可以用于签名或加密,但您得创建两个不同的子密钥。
- 密钥长度
-
标明子密钥的长度位数,通常越长的密钥越安全。
- 有效期
-
标明子密钥不能再使用的日期。
To change a subkey expiration date, select
the subkey from the Subkeys
section, then:
-
Click on the Expire button on the left,
-
From the date dialog choose the new expiration date or select
Never expires for no expiration date.
To revoke a subkey, select the subkey from the Subkeys
section, then:
-
Click on the Revoke button on the left,
-
Choose a reason why to revoke the subkey:
- No Reason
-
There isn't a specific reason to revoke the key.
- Compromised
-
The key has been compromised.
- Superseded
-
The key has been superseded by another one.
- Not Used
-
The key is not used anymore.
-
Enter a description of why you are revoking the key,
-
Click on Revoke.
To delete a subkey, select the subkey from the Subkeys
section, then:
-
Click on the Delete button on the left.
关于
Copyright
- Copyright © 2005, 2006, 2007, 2008, 2009 Jacob Perkins and Adam Schreiber
Legal Notice
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation
License (GFDL), Version 1.1 or any later version published
by the Free Software Foundation with no Invariant Sections,
no Front-Cover Texts, and no Back-Cover Texts. You can find
a copy of the GFDL at this link or in the file COPYING-DOCS
distributed with this manual.
本手册是在 GFDL 许可之下分发的 GNOME 手册集合的一部分。如果想要单独分发此手册,可以在手册中添加该许可证的一份副本然后分发,如该许可证的第 6 部分所述。
各个公司使用的许多用于区别它们产品和服务的名称都声明为商标。在所有的 GNOME 文档以及 GNOME 文档项目的成员中,这些名称都是以全大写字母或首字母大写显示,从而表明它们是商标。
DOCUMENT AND MODIFIED VERSIONS OF THE DOCUMENT ARE PROVIDED
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