request for certificate extension

Kazu Yamamoto ( 山本和彦 ) kazu at
Thu Jan 4 06:25:35 CET 2007


DoCoMo, the biggest cellular phone company in Japan, send messages
signed with S/MIME to users. If we verify a signature of a message
from DoCoMo, the verification process fails and the following warning
message is displayed.

gpgsm: Signature made 2006-12-22 13:47:37 using certificate ID 64C04082
gpgsm: critical certificate extension is not supported
gpgsm: invalid certification chain: Unsupported certificate

I don't know this well, but I found the following in RFC3280:

341 06    3:           OBJECT IDENTIFIER subjectAltName (2 5 29 17)

If possible, I would request to support this extension.


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