Puttygen key generator download

Provided by: putty-tools_0.63-4_i386


puttygen - public-key generator for the PuTTY tools


puttygen ( keyfile | -t keytype [ -b bits ] ) [ -C new-comment ] [ -P ] [ -q ] [ -O output-type | -l | -l | -P ] [ -O output-file ]


puttygen is a tool to generate and manipulate SSH public and private key pairs. It is part of the PuTTY suite, although it can also interoperate with the private key formats used by some other SSH clients. When you run puttygen, it does three things. Firstly, it either loads an existing key file (if you specified keyfile), or generates a new key (if you specified keytype). Then, it optionally makes modifications to the key (changing the comment and/or the passphrase); finally, it outputs the key, or some information about the key, to a file. All three of these phases are controlled by the options described in the following section.


In the first phase, puttygen either loads or generates a key. Note that generating a key requires random data (from /dev/random), which can cause puttygen to pause, possibly for some time if your system does not have much randomness available. The options to control this phase are: keyfile Specify a private key file to be loaded. This private key file can be in the (de facto standard) SSH-1 key format, or in PuTTY's SSH-2 key format, or in either of the SSH-2 private key formats used by OpenSSH and ssh.com's implementation. -t keytype Specify a type of key to generate. The acceptable values here are rsa and dsa (to generate SSH-2 keys), and rsa1 (to generate SSH-1 keys). -b bits Specify the size of the key to generate, in bits. Default is 1024. -q Suppress the progress display when generating a new key. In the second phase, puttygen optionally alters properties of the key it has loaded or generated. The options to control this are: -C new-comment Specify a comment string to describe the key. This comment string will be used by PuTTY to identify the key to you (when asking you to enter the passphrase, for example, so that you know which passphrase to type).

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