The safest way to get PuTTYgen is through the official PuTTY website. Because Windows 7 32-bit is an older architecture, you must select the correct binary to ensure the program runs without "not a valid Win32 application" errors.
Once you have downloaded the 32-bit version of PuTTYgen, follow these steps to create your key pair: putty key generator download for windows 7 32 bit
For extra security, enter a "Key passphrase." This encrypts the key on your local disk. Save Your Keys: The safest way to get PuTTYgen is through
SSH keys are nearly impossible to crack compared to passwords. putty key generator download for windows 7 32 bit
Never download PuTTYgen from "free software" mirror sites, as they may bundle malware.
Never share your private key (.ppk) with anyone or upload it to a public cloud.