Enigmail and Thunderbird question
 

When settingup GNUPG and enigmail, I generated my key in GNUPG, generated my key in engimail using the same email address.

When I encrypt an outgoing message, it only uses my public key to encrypt. How do I make it so I can encrypt using someone elses public key?

Umm you can't. You encrypt using your privae key so that it can be verified that YOU sent the mail. Your public key can then be used to decrypt the message and the reciver can be sure that you sent it.

You're confusing signing and encrypting. You are describing signing a message, whereby you make a unique hash key of the message, encrypt that with your private key, so that anyone with your public key can decrypt the hash, compare it with a hash they make themselves of the message, and if the two match, then the message has not been tampered with, and is from you.

With encrypting, as W0bbles said, you encrypt the message with the other persons public key, so only the recipient can decrypt the message with their private key.

W00ble: I haven't tested sending other people an encrypted message using Enigmail, but I believe you do need their public key on your key ring, and if the e-mail address in your contact book doesn't match the e-mail address on the key ring, you will need to add a "Per Recipient Rule" (Enigmail --> Per Recipient Rules). I'm not sure if you need a rule anyway, I haven't had the opportunity to test it.

Thanks Cathectic. I'm going to try that out right now. The people's public key I do have is on my key ring (I use KGPG). Do I need to add whatever those keyrings are to my Enigmail per-recipient rules editor?

Thanks again,
W0bbles

Oops, sorry about that.