GnuPG高级指导（3）导出私钥

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1 为什么要导出分发私钥

友情提示：分发私钥，是危险的！

我有好几个电脑，只想用一对密钥；也就是说我需要把我的私钥，放到那几个电脑上。这样，我就就可以在任意电脑上，解密和签名以及其他。

1       怎么做

使用（临时）公钥把私钥加密，然后传到我的其他某个电脑，再解密。

3 我的debian8，生成（临时）密钥

root@debian8:~# gpg -K

root@debian8:~# gpg -k

/root/.gnupg/pubring.gpg

------------------------

pub   4096R/276856F7 2016-11-25 [expires: 2017-04-24]

uid                  FranklinYang (Encrypt RSA 4096) <andypeker@163.com>

sub   4096R/0A09DAC9 2016-11-25 [expires: 2017-04-24]

root@debian8:~#

root@debian8:~#

（编辑这个key，并且修改trust）

root@debian8:~# gpg -K

/root/.gnupg/secring.gpg

------------------------

sec  1024D/D04D1A0B 2016-11-25 [expires: 2016-12-09]

uid                  debian8

ssb   2048g/C1845DA4 2016-11-25

root@debian8:~# gpg -k

/root/.gnupg/pubring.gpg

------------------------

pub   4096R/276856F7 2016-11-25 [expires: 2017-04-24]

uid                  FranklinYang (Encrypt RSA 4096) <andypeker@163.com>

sub   4096R/0A09DAC9 2016-11-25 [expires: 2017-04-24]

pub   1024D/D04D1A0B 2016-11-25 [expires: 2016-12-09]

uid                  debian8

sub   2048g/C1845DA4 2016-11-25 [expires: 2016-12-09]

root@debian8:~#

4 我的Centos7，生成（临时）密钥

[root@centos7 ~]# gpg -K

[root@centos7 ~]#

[root@centos7 ~]#

[root@centos7 ~]# gpg -k

/root/.gnupg/pubring.gpg

------------------------

pub   4096R/276856F7 2016-11-25 [expires: 2017-04-24]

uid                  FranklinYang (Encrypt RSA 4096) <andypeker@163.com>

sub   4096R/0A09DAC9 2016-11-25 [expires: 2017-04-24]

[root@centos7 ~]#

[root@centos7 ~]#

（编辑这个key，并且修改trust）

[root@centos7 ~]# gpg -K

/root/.gnupg/secring.gpg

------------------------

sec  1024D/28D414A1 2016-11-25 [expires: 2016-12-09]

uid                  centos7

ssb   2048g/CDA873F4 2016-11-25

[root@centos7 ~]# gpg -k

/root/.gnupg/pubring.gpg

------------------------

pub   4096R/276856F7 2016-11-25 [expires: 2017-04-24]

uid                  FranklinYang (Encrypt RSA 4096) <andypeker@163.com>

sub   4096R/0A09DAC9 2016-11-25 [expires: 2017-04-24]

pub   1024D/28D414A1 2016-11-25 [expires: 2016-12-09]

uid                  centos7

sub   2048g/CDA873F4 2016-11-25 [expires: 2016-12-09]

[root@centos7 ~]#

5 导出2个（临时）公钥给我的（opensuse13）电脑

root@debian8:~# gpg -a -o debian8.pub.key --export D04D1A0B

root@debian8:~#

root@debian8:~#

root@debian8:~# l debian8.pub.key

-rw-r--r-- 1 root root 1645 Nov 25 23:16 debian8.pub.key

root@debian8:~#

root@debian8:~# scp debian8.pub.key root@192.168.19.147:/root/

Password:

debian8.pub.key                            100% 1645     1.6KB/s   00:00

root@debian8:~#

root@debian8:~#

[root@centos7 ~]# gpg -a -o centos7.pub.key --export 28D414A1

[root@centos7 ~]# ls -l centos7.pub.key

-rw-r--r--. 1 root root 1662 Nov 25 23:15 centos7.pub.key

[root@centos7 ~]#

[root@centos7 ~]# scp centos7.pub.key root@192.168.19.147:/root/

Password:

centos7.pub.key                            100% 1662     1.6KB/s   00:00

[root@centos7 ~]#

5 我的（opensuse13）电脑导入2个（临时）公钥

opensuse13:~ # gpg --import debian8.pub.key

gpg: key D04D1A0B: public key "debian8" imported

gpg: Total number processed: 1

gpg:               imported: 1

opensuse13:~ # gpg --import centos7.pub.key

gpg: key 28D414A1: public key "centos7" imported

gpg: Total number processed: 1

gpg:               imported: 1

opensuse13:~ #

（编辑这二个key，并且修改trust）

opensuse13:~ # gpg -k

/root/.gnupg/pubring.gpg

------------------------

pub   4096R/276856F7 2016-11-25 [expires: 2017-04-24]

uid       [ultimate] FranklinYang (Encrypt RSA 4096) <andypeker@163.com>

sub   4096R/0A09DAC9 2016-11-25 [expires: 2017-04-24]

pub   1024D/D04D1A0B 2016-11-25 [expires: 2016-12-09]

uid       [unknown] debian8

sub   2048g/C1845DA4 2016-11-25 [expires: 2016-12-09]

pub   1024D/28D414A1 2016-11-25 [expires: 2016-12-09]

uid       [unknown] centos7

sub   2048g/CDA873F4 2016-11-25 [expires: 2016-12-09]

opensuse13:~ #

整个过程的唯一不安全的地方就在这里，通过scp分发2个“临时”公钥；没有涉及认证，也没有签名！其实可以签名一下，或者对比指纹fingerprint，达到认证这2个公钥的效果。

6 我的（opensuse13）导出我的私钥

opensuse13:~ # gpg -K

/root/.gnupg/secring.gpg

------------------------

sec   4096R/276856F7 2016-11-25 [expires: 2017-04-24]

uid                  FranklinYang (Encrypt RSA 4096) <andypeker@163.com>

ssb   4096R/0A09DAC9 2016-11-25

opensuse13:~ # gpg -a -o FranklinYang.rsa.sec.key --export-secret-keys 276856F7

opensuse13:~ # l FranklinYang.rsa.sec.key

-rw-r--r-- 1 root root 3132 Nov 25 21:19 FranklinYang.rsa.sec.key

opensuse13:~ #

或者：

opensuse13:~ #

opensuse13:~ # gpg -o FranklinYang.sec.key --export-secret-keys FranklinYang

opensuse13:~ #

opensuse13:~ #

GnuPG高级指导（3）导出私钥

标签：gnu   finger   dac   key   expires   对比   import   root   export   

原文地址：http://www.cnblogs.com/andypeker/p/6111888.html