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Re: Are certificates _required_ by the sender?

2002-05-15 07:07:06


To sign a message, the originator needs to have a certificate that contains the public key that will be used by the recipient to validate the signature.

To encrypt a message, the originator need not have a certificate; however, the recipient will generally not be able to authenticate the source of the message unless it is signed.


At 04:26 AM 5/8/2002 -0500, Terje Tollisen wrote:

Is the sender of an email required to have a certificate, or is it sufficient for the sender to have a copy of the certificate of the recipient? I am thinking of an automated system, where one party will always be the sender, and never receive emails. In addition, no signatures are required. Thus nobody will ever actually need the public key for the automated system. However, I'm uncertain if the sender can send S/MIME messages without having a certificate of it's own.

Thanks for your time
-Terry Tollisen

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