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2020-01-13		2020-01-13
update from the latest putty documentation (less focus on ssh-1) (martin)		restoring putty reference (martin)
	Line 136:		Line 136:
	For OpenSSH there are two options. Modern OpenSSH actually has two formats it uses for storing private keys. //Export OpenSSH key// will automatically choose the oldest format supported for the key type, for maximum backward compatibility with older versions of OpenSSH; for newer key types like Ed25519, it will use the newer format as that is the only legal option. If you have some specific reason for wanting to use OpenSSH's newer format even for RSA, DSA, or ECDSA keys, you can choose //Export OpenSSH key (force new file format)//.		For OpenSSH there are two options. Modern OpenSSH actually has two formats it uses for storing private keys. //Export OpenSSH key// will automatically choose the oldest format supported for the key type, for maximum backward compatibility with older versions of OpenSSH; for newer key types like Ed25519, it will use the newer format as that is the only legal option. If you have some specific reason for wanting to use OpenSSH's newer format even for RSA, DSA, or ECDSA keys, you can choose //Export OpenSSH key (force new file format)//.

-	Most clients for the older SSH-1 protocol use a standard format for storing private keys on disk. PuTTY uses this format as well; so if you have generated an %%SSH-1%% private key using OpenSSH or ssh.com's client, you can use it with WinSCP, and vice versa. Hence, the export options are not available if you have generated an %%SSH-1%% key.	+	Most clients for the older SSH-1 protocol use a standard format for storing private keys on disk. PuTTY uses this format as well; so if you have generated an %%SSH-1%% private key using OpenSSH or ssh.com's client, you can use it with WinSCP, and vice versa. Hence, the export options are not available if you have generated an %%SSH-1%% key.((&puttydoccite))

	You can also use WinSCP ''[[commandline#keygen\|/keygen]]'' command-line switch to convert the private key from other formats.		You can also use WinSCP ''[[commandline#keygen\|/keygen]]'' command-line switch to convert the private key from other formats.