PuTTYgen — Key Generator for PuTTY on Windows

PuTTYgen download and install

PuTTYgen is normally installed as part of the normal PuTTY .msi package installation. There is no need for a separate PuTTYgen download.

Running PuTTYgen

Go to Windows Start menuAll ProgramsPuTTYPuTTYgen.

PuTTY Key Generator
PuTTYKey Generator

Creating a new key pair for authentication

To create a new key pair, select the type of key to generate from the bottom of the screen (using SSH-2 RSA with 2048 bit key size is good for most people; another good well-known alternative is ECDSA).

Public/Private Key Pair
PuTTYKey Created
Puttykey created

Installing the public key as an authorized key on a server

With both Tectia SSH and OpenSSH servers, access to an account is granted by adding the public key to a file on the server.

Managing SSH keys

In larger organizations, the number of SSH keys on servers and clients can easily grow to tens of thousands, in some cases to millions of keys.

Changing the passphase of a key

It is recommended that all SSH keys be regenerated and changed periodically. The Universal SSH Key Manager can automate this.

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Robert Fox

Robert Fox

robert Fox is a 30-year-old personal trainer who enjoys walking, spreading fake news on Facebook and swimming.