[xmlsec] UTF8

[Michiels Olivier]

Hi,
I'm trying to sign an xml file containing utf8 characters. When I try to parse the file I receive this error message:
reg.xml:7: error: Input is not proper UTF-8, indicate encoding !
keyname?buc_id=8047651268&cert_serialnumber=$timeStamp$&CN=
reg.xml:7: error: Bytes: 0xE8 0x6A 0x61 0x76

How can I avoid that problem ?

Thanks,
Michiels Olivier