Isode R14.4: M-Switch MIXER enhancements to support S/MIME & Security Labels
This one of a series of a messages describing new features in Isode R14.4, scheduled to ship in April 2009. You can see all of the messages on this blog relating to R14.4 by clicking on this link
R14.4 extends M-Switch MIXER to support S/MIME and Security Labels.
M-Switch MIXER provides conversion between X.400 and Internet Messaging.
MIXER as specified in RFC 2156 does not include any security mappings, as in
general mapping of protocol dependent security features does not make sense.
Security Labels can be carried with X.400 messages, as "X.411 labels" in the
Security labels can be carried with Internet messages,
as "ESS labels" with an S/MIME message as defined in RFC 2634 "Enhanced
Security Services for S/MIME". ESS labels and X.411 labels are similar
ASN.1 encoded labels.
R14.4 extends M-Switch MIXER to map X.411 and ESS Security Labels. Coming
from Internet Mail this is done by extracting the ESS Label and the MIME
message from the S/MIME encoding, mapping the label encoding and then
sending it as an X.411 label. S/MIME signature verification is also done.
Coming from X.400, the reverse happens, mapping an X.411 label to an ESS
label wrapped in S/MIME, with the S/MIME signed by the MIXER gateway.
This functionality also provides generic mapping between S/MIME and X.400
when security labels are not used. It also provides content integrity and
authentication between the S/MIME end user and the MIXER gateway.