You can specify your data at the abstract value in ASN.1, and then use ECN to specify that the length field covers the whole record (T - presumably fixed size?, plus L - presumably fixed size?, plus V - variable size).
And tools that support ASN.1 with ECN are now becoming available. John L "Igor Bjelik (ETK)" wrote: > > Regards, > We have problem with File formating from some external to ASN.1 internal format. > File is hexadecimal, and we think it is some kind of BER encoded because length is >on second place > > BER format looks like : [ T ][ L ][ V ] > Where T = Tag > L = Length > V = Value > and L is the length of Value, > > and for example if T =84, and L=01 and V = 05 , > and in file (in hexa.format) that record is like 84 01 05 > > and description of format is: > > Problem is that in our file format L is not the length of Value .In our case L is >the length of all record. > And in file it looks like 84 03 05 > There are records of fixed and variable length. > We use DSET compiler.We need information how to define external file format in this >case. > I'm sending the typical file. > Best Regards > Igor Bjelik > > <<strange.iac>> > > ------------------------------------------------------------------------ > Name: strange.iac > strange.iac Type: unspecified type (application/octet-stream) > Encoding: base64 -- Prof John Larmouth Larmouth T&PDS Ltd (Training and Protocol Development Services) 1 Blueberry Road Bowdon [EMAIL PROTECTED] Cheshire WA14 3LS Tel: +44 161 928 1605 England Fax: +44 161 928 8069
