ssh-keygen生成密钥对

rgr3255

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

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[iyunv@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+..             | +-----------------+ [iyunv@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：

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[iyunv@centos66 ~]# cat filename -----BEGIN RSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: DES-EDE3-CBC,E59C93328E0C7EF9 sluyNeFLBtMNcAW7gXlfaoLCQn8cVsSHCsMx05SFkoB136N0zL6Lnistwzr8+5Do 53uUF7WMLMaHd8pwqJimKUyQ0JhxGHaSySdMgeErqbIsI3HuyEYjfoyLmbv/qtSE X2HuKNCgj4QgFIkQhU85j4fJYR7PxCxaEtr1iwRLUWp84aEhoLcev/jF8fYnaNN+ QnmnXslDgLryGPuNKxD694lG1CK5XnDPzXPtfY6LgemHPCQThqXkDY4UGp0Zl0Ya GixE7m7n2L6XpbXz3kJHBSnOHVAv+GEgBykVHXEvBEQagOHSaQvG+ivFtvIoBAkl MLfhpSJuGUv1CA8wpnNT+rF7dIogLmMaoc/N2FaORsL4EeImaQhcxn6r9dWvuehV nJuCvQd6+XeSap4Vd/AgQ+BqlDwAPqWBuEkJZoisTCbybcqs4jb5ij8mkFU8Rrqc cZ1/Fwv+ycG8g8LSidfsus2L7KRVgpBSOCpMc2ietixnOEiFL0STeuldB4wcghbA nMVyWmzawIc6TP+53ym1TmKogAMTNT5uram4F5hy3wPmgaaUj1yjocjpsII39Yxj NzEeFZE1kyteoUAc9Zh9CxAs20dhW+wKTLmXiIAFFUhHXvrNhaifRzObvjKrtMbX b0BowxWRlkL3RDOPuSaK4qjFrC6M3hwPuvuVEiSox3PyQTwsLHfNrxP7YYAvZeqZ 08Pcs7ECt6D1ZOOY93w5SiZq+zSj3Wmc1GBxfedgb9F+7vwqhaCCwUfB25IDkHcP HA5hMaH9474Cx+lJuO9Do9exuY2yXpEjqIb8MnjL7l71LnW7rRHYFWaCSqrUeuRL 1GSg+gZe5XVCZ4bEKXnCsBvitAcmLKIjSiZzu0zaqTFWUWJ2b7fKstwreCe33xAS 9S+n6cdLGcnxdqr2MRnHVIO0znZo/JSNfnTRHNfGZP7JmPSF7rj7qw8t5U+gOadA EQRO3i3lnjNDJtK2EEXNE2vmZ3q0l6/yaWPos7XWRdEXEplq0uby0xDFmT3hmp8T Z7yBxfs0FuoutyO8hKvxIPjK9jVpZOjOvekYRUH0bV6BAMy8mWJnfm0oNnFYgrku TyT7kOxbf5cHGdJk4wN/AhKi7KMdwgpyjsQQTDuTGc9JhEt19TpP316ajN8SRXqB ONtsfLJGD33vDVLWjHGOALqs6N+aRWG6B7JatJ6ZPCHLyI74Pt5B/K8m7mvTpw+H Ygn0nPSpMOTNqp6kKeT1naPO2lMUPoPsLUe5MKT/yr8g6YrTvqn61fsU1kPADmdd APKr4J20weFr/+rsr5NPRGrorBGj4qXwgxCUoYvGcvhEKkQ7KPJDfrBwB5sYn7Sw nTWTXeNLPfJa3JODXrzLkdpggVFe4JtCttU6d4BCJr5W6JYUmHpabVUgbtYg6+gN wQJgTM27Sv44vHl0lY0bH61/hEv/v7eNKRxy8PAnrqozTrYvbQR+ZnJquBuYG/vO snGH2BLkCbn9LBEDThwdxRisJEQky4s98p6x2TWA9L8o2WTBQfLAE75r+mP6X56v vfmOXTD5MHGqVR7eTTjN1UI+7IVVBhvJnXV8QRhwlLJyzyC6w3Ag4Q== -----END RSA PRIVATE KEY-----

查看公钥文件：

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[iyunv@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

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[iyunv@centos66 ~]# cat /root/.ssh/authorized_keys ssh-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