ssh-keygen -t rsa -C www1707 -f filename -P 123456
-t rsa 设置加密类型
-C www1707 设置标注
-f filename 定义生成的文件名称
-P 123456 用密码123456加密私钥
[root@centos66 ~]# ssh-keygen -t rsa -C www1707 -f filename -P 123456 Generating public/private rsa key pair.
Your identification has been saved in filename.
Your public key has been saved in filename.pub.
The key fingerprint is:
82:4b:49:83:c9:6a:25:83:c8:e3:fa:63:b0:2e:38:31 www1707
The key's randomart image is:
+--[ RSA 2048]----+
| |
|+. o |
|o=+.o |
|..=. + |
|.o + . S |
|E . . . |
|o= . |
|=.o |
|o+.. |
+-----------------+
[root@centos66 ~]# ll
total 12
-rw-------. 1 root root 1743 Jul 29 23:34 filename
-rw-r--r--. 1 root root 389 Jul 29 23:34 filename.pub
查看私钥文件：
[root@centos66 ~]# cat filename-----BEGIN RSA PRIVATE KEY-----Proc-Type: 4,ENCRYPTEDDEK-Info: DES-EDE3-CBC,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-----END RSA PRIVATE KEY-----
查看公钥文件：
[root@centos66 ~]# cat filename.pub ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsaD9gvSVHypRTCjlCw5U1l4M5Qs3N+fojWa6kEleWw+WGEp0NxdW3VdjO9zEhumC7c6yTtuMIBQe6tHnNR/aUFASFIKUAn4qZx8hkyySFg7cGAlJyoPKbOpc0iQqFHeJB36LLLSS/6mhSzu2M5Zz02kC5V7YY2kCaI2qmfByObDXfQk+TdflyIHoMREHUHyhGlZk+JbGkgCme5Dluwwg3Zy/CysHhQubyizsULwIjUv2p/Q+StxX37ZyMaH6+FpEBmDzCcPqzCeNdiKyX5UzzDFcfp1MFlVRdmOGj7cIptPsh+YeLjbOt29CYichl0RZ62Z1UsC4ls5KT/Gaedrl0w== www1707
将生成的公钥文件追加到/root/.ssh/authorized_keys文件中，添加信任关系
[root@centos66 ~]# cat /root/.ssh/authorized_keysssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsaD9gvSVHypRTCjlCw5U1l4M5Qs3N+fojWa6kEleWw+WGEp0NxdW3VdjO9zEhumC7c6yTtuMIBQe6tHnNR/aUFASFIKUAn4qZx8hkyySFg7cGAlJyoPKbOpc0iQqFHeJB36LLLSS/6mhSzu2M5Zz02kC5V7YY2kCaI2qmfByObDXfQk+TdflyIHoMREHUHyhGlZk+JbGkgCme5Dluwwg3Zy/CysHhQubyizsULwIjUv2p/Q+StxX37ZyMaH6+FpEBmDzCcPqzCeNdiKyX5UzzDFcfp1MFlVRdmOGj7cIptPsh+YeLjbOt29CYichl0RZ62Z1UsC4ls5KT/Gaedrl0w== www1707
最后将私钥文件 filename 拷贝到需要连接该linux的机器上使用即可，使用时需要输入私钥的加密密码 123456
#########################################################################################
创建密钥对，不加密私钥
[root@localhost .ssh]# ssh-keygen -t rsa -C www1707 -f www1707Generating public/private rsa key pair.Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in www1707.Your public key has been saved in www1707.pub.The key fingerprint is:48:bb:88:50:ce:5d:5f:d3:65:38:89:bc:e3:0f:38:7b www1707The key's randomart image is:+--[ RSA 2048]----+| . . oo || o.+o || . o o... || + . o + .o. ||. o . o So . || . . . .o o || . . . o o || . E . || . |+-----------------+[root@localhost .ssh]# ll-rw-------. 1 root root 1675 Jul 30 15:43 www1707-rw-r--r--. 1 root root 389 Jul 30 15:43 www1707.pub[root@localhost .ssh]# cat www1707-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
给不带密码的私钥添加密码123456
[root@localhost .ssh]# ssh-keygen -p -N 123456 -f www1707Key has comment 'www1707'Your identification has been saved with the new passphrase.[root@localhost .ssh]# cat www1707-----BEGIN RSA PRIVATE KEY-----Proc-Type: 4,ENCRYPTEDDEK-Info: DES-EDE3-CBC,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-----END RSA PRIVATE KEY-----
给加密的私钥更换密码为654321
[root@localhost .ssh]# ssh-keygen -p -P 123456 -N 654321 -f www1707Key has comment 'www1707'Your identification has been saved with the new passphrase.[root@localhost .ssh]# cat www1707-----BEGIN RSA PRIVATE KEY-----Proc-Type: 4,ENCRYPTEDDEK-Info: DES-EDE3-CBC,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-----END RSA PRIVATE KEY-----
本文出自 “三角形” 博客，请务必保留此出处http://www1707.blog.51cto.com/1184226/1679845