June 2003
Beginner to intermediate
944 pages
43h 1m
English
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Name
ssh-keygen
Synopsis
ssh-keygen [options]Generate, manage, and convert authentication keys for ssh.
Options
- -b bits
Specify the number of bits in the key. The minimum is 512 and the default is 1024.
- -B
Show the bubblebabble digest (a digest represented as a string that looks like real words) for the private or public key file specified with -f.
- -c
Change the comment in the private and public key files (for RSA1 keys only).
- -C comment
Specify the new comment.
- -D reader
Download the RSA public key from the smartcard in reader.
- -e
Read an OpenSSH private or public key file and write it in SECSH Public Key File Format to standard output for exporting to a commercial SSH.
- -f file
Specify the filename of the key file.
- -i
Read an SSH2-compatible unencrypted private or public key file and write an OpenSSH-compatible key to standard output. Used to import keys from a commercial SSH.
- -l
Show fingerprint of public or private RSA1 key file specified with -f.
- -N passphrase
Specify the new passphrase.
- -p
Change the passphrase for a private key file. Prompt for the file, the old passphrase, and twice for the new passphrase.
- -P passphrase
Specify the old passphrase.
- -q
Operate in quiet mode.
- -t type
Specify the type of key to create. Possible values of type are rsa1 for SSH1, and rsa or dsa for SSH2.
- -U reader
Upload an existing RSA private key to the smartcard in reader.
- -y
Read a private OpenSSH-format file and print a public key to standard output.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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