[openssl-users] how to ask peer to sign a message

李爱琴 liaiqin.lanzhou at gmail.com
Sat Sep 3 09:57:29 UTC 2016

This is a bit off topic but I find openssl users a good group to ask about

In the case of an SSL connection where the client has a certificate, is it
possible for the server to request the client to sign a message with the
private key of that certificate?

For example, for a webmail system, when user press "send" button, is it
possible for the server to ask the client browser to sign the email with
the same private key, whose certificate is used to log in to that very

If it is possible, is it by a special form or  javascript?


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