SSH Key生成及配置

ssh是一種網路協議，用於計算機之間的加密登入。

個人常用

ssh-keygen -t rsa -f filename -c "[email protected]"

eg: 
ssh-keygen -t rsa -f ~/.ssh/id_rsa.osc -c "[email protected]"

多個key的管理

在.ssh目錄下的config檔案中進行配置

host *.domain.com

identityfile filename
user username
eg:host git.oschina.net
identityfile ~/.ssh/id_rsa.osc
user buff

附：

usage: ssh-keygen [options]

options:
-a          generate non-existent host keys for all key types.
-a trials   number of trials for screening dh-gex moduli.
-b          show bubblebabble digest of key file.
-b bits     number of bits in the key to create.
-c comment  provide new comment.
-c          change comment in private and public key files.
-d pkcs11   download public key from pkcs11 token.
-e          export openssh to foreign format key file.
-f hostname find hostname in known hosts file.
-f filename filename of the key file.
-g file     generate candidates for dh-gex moduli.
-g          use generic dns resource record format.
-h          hash names in known_hosts file.
-h          generate host certificate instead of a user certificate.
-i key_id   key identifier to include in certificate.
-i          import foreign format to openssh key file.
-j number   screen this number of moduli lines.
-j number   start screening moduli at specified line.
-k checkpt  write checkpoints to this file.
-k          generate a krl file.
-l          print the contents of a certificate.
-l          show fingerprint of key file.
-m memory   amount of memory (mb) to use for generating dh-gex moduli.
-m key_fmt  conversion format for -e/-i (pem|pkcs8|rfc4716).
-n phrase   provide new passphrase.
-n name,... user/host principal names to include in certificate
-o option   specify a certificate option.
-p phrase   provide old passphrase.
-p          change passphrase of private key file.
-q          test whether key(s) are revoked in krl.
-q          quiet.
-r hostname remove host from known_hosts file.
-r hostname print dns resource record.
-s start    start point (hex) for generating dh-gex moduli.
-s ca_key   certify keys with ca key.
-t file     screen candidates for dh-gex moduli.
-t type     specify type of key to create.
-u          update krl rather than creating a new one.
-v from:to  specify certificate validity interval.
-v          verbose.
-w gen      generator to use for generating dh-gex moduli.
-y          read private key file and print public key.
-z serial   specify a serial number.

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