Re: How to use my own algrithum in S/MIME of Outlook Express?
From: David Cross [MS] (dcross_at_online.microsoft.com)
Date: 11/25/04
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Date: Thu, 25 Nov 2004 05:14:57 -0800
No, unfortunately as Kelvin indicated, this is not possible. The
architecture is currently not extensible in this way.
-- David B. Cross [MS] -- This posting is provided "AS IS" with no warranties, and confers no rights. Top Whitepapers: Auto-enrollment whitepaper: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/autoenro.mspx Best Practices for implementing Windows Server 2003 PKI: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/ws3pkibp.mspx Troubleshooting Certificate Status and Revocation whitepaper: http://www.microsoft.com/technet/security/topics/crypto/tshtcrl.mspx Windows Server 2003 web enrollment and troubleshooting guide: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/webenroll.mspx Windows Server 2003 web enrollment and troubleshooting guide: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/webenroll.mspx "cable00" <cable00@discussions.microsoft.com> wrote in message news:F0348589-A575-448E-9F16-E102AEB5591E@microsoft.com... > Thanks to Kelvin Yiu > > I still want to know is there a way to make Outlook Express use my > algorithm,like register an OID , implement my encoder/decoder etc, and How > to > do it ? > > "Kelvin Yiu [MS]" wrote: > >> The short answer is no. >> >> Although you can write your own algorithms in a custom CSP, you cannot >> easily plug in the functions necessary to encode and decode ASN.1 >> structures >> that store public keys in certificates or key wrapping in s/mime >> messages. >> The X.509 and CMS APIs in CryptoAPI were not designed to support >> pluggable >> crypto - especially custom asymmetric algorithms. >> >> -- >> Kelvin Yiu [MS] >> This posting is provided "AS IS" with no warranties, and confers no >> rights >> >> "cable00" <cable00@discussions.microsoft.com> wrote in message >> news:AB58D75E-35C2-44DF-ABB6-76C66EA2ACA8@microsoft.com... >> > Hi to all: >> > >> > I implemented my own CSP which has my own encryption algrithum . I >> > try >> > to send S/MIME email use my own CSP and my algrithum in Outlook >> > express. >> > Certificates in MY store are set KEY_PROV_INFO to point to my CSP. >> > >> > But, >> > 1. I can't select my algrithum in Outlook Express's >> > Tool|account|security, the default algrithum shows >> > >> > 2. Outlook Express uses the default CSP to verity the incoming >> > email >> > signature and encrypt the outgoing email, but I want to use my own >> > CSP. >> > >> > I want to know how to resolve my problem? >> > >> > best regards >> > >> > cable00 >> > >> >> >>
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