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I am trying to use S/MIME with Outlook 2003. i can send out an encrypted
message to an outside account that is using Outrlook Express, but how does the OE client reply to the encrypted message? The error states that I need a a digital certificate. If I reply to the message that came from the secure email address, can't I just use the key that came from the other person? |
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Russ wrote:
I am trying to use S/MIME with Outlook 2003. i can send out an encrypted message to an outside account that is using Outrlook Express, but how does the OE client reply to the encrypted message? The error states that I need a a digital certificate. If I reply to the message that came from the secure email address, can't I just use the key that came from the other person? In order to reply to an encrypted message, the replier must have a copy of your public key if they want the response encrypted as well. In other words, you must have sent them a digitally-signed message first before sending them the encrypted message. Did you do that? -- Brian Tillman |
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From: "Brian Tillman"
| | In order to reply to an encrypted message, the replier must have a copy of | your public key if they want the response encrypted as well. In other | words, you must have sent them a digitally-signed message first before | sending them the encrypted message. Did you do that? Or... pull the certificate from a LDAP server. -- Dave http://www.claymania.com/removal-trojan-adware.html http://www.ik-cs.com/got-a-virus.htm |
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David H. Lipman wrote:
Or... pull the certificate from a LDAP server. Well, yeah. It's what I do. -- Brian Tillman |
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From: "Brian Tillman"
| | Well, yeah. It's what I do. Ditto. I'm on some :-) -- Dave http://www.claymania.com/removal-trojan-adware.html http://www.ik-cs.com/got-a-virus.htm |
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Hey everyone! Well, I did a brief test. I sent an encrypted message from my
Outlook 2003 client at work to my personal email account at home which uses OE (latest version). At home, I do not have any encryption keys. However, I thought that I would be able to reply from OE to my Outlook 2003 account with the key that was attached to my work account. Does that make sense? "David H. Lipman" wrote in message ... From: "Brian Tillman" | | Well, yeah. It's what I do. Ditto. I'm on some :-) -- Dave http://www.claymania.com/removal-trojan-adware.html http://www.ik-cs.com/got-a-virus.htm |
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Russ wrote:
Hey everyone! Well, I did a brief test. I sent an encrypted message from my Outlook 2003 client at work to my personal email account at home which uses OE (latest version). At home, I do not have any encryption keys. However, I thought that I would be able to reply from OE to my Outlook 2003 account with the key that was attached to my work account. Does that make sense? If the email address you have at home does not have a certificate, Outlook should refuse to send an encrypted message. You can't send someone any encrypted message unless they have a public key, you have access to that public key (either because they sent it to you in a signed message or because you reference a certificate server that knows it), and that public key is trusted. Likewise, you can't decrypt an encrypted message unless it has been encrypted with your public key and you have a private key that matches. If you receive a digitally signed message using Outlook Express from someone, you should be abke to add that someone to your Contacts, which should store their public key in your crypto store and from then on you should be able to send them an encrypted message. They just won't be able to respond to you with an encrypted message unless you also have a certificate and have sent them your public key. -- Brian Tillman |
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Brian, I got it now. Thanks for your help...
"Brian Tillman" wrote in message ... Russ wrote: Hey everyone! Well, I did a brief test. I sent an encrypted message from my Outlook 2003 client at work to my personal email account at home which uses OE (latest version). At home, I do not have any encryption keys. However, I thought that I would be able to reply from OE to my Outlook 2003 account with the key that was attached to my work account. Does that make sense? If the email address you have at home does not have a certificate, Outlook should refuse to send an encrypted message. You can't send someone any encrypted message unless they have a public key, you have access to that public key (either because they sent it to you in a signed message or because you reference a certificate server that knows it), and that public key is trusted. Likewise, you can't decrypt an encrypted message unless it has been encrypted with your public key and you have a private key that matches. If you receive a digitally signed message using Outlook Express from someone, you should be abke to add that someone to your Contacts, which should store their public key in your crypto store and from then on you should be able to send them an encrypted message. They just won't be able to respond to you with an encrypted message unless you also have a certificate and have sent them your public key. -- Brian Tillman |
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