Open Mourhamo opened 8 years ago
Hello Mourad,
I'm having trouble seeing the bigger picture. What do you suggest asn1ate is doing wrong?
Thanks!
Sorry I did the issue too quickly.
If ASN1 file define a variable with the terms : "fileID OCTET STRING (SIZE(2))" That means,it has to be an octet string of length 2 Octets
eg: fileID = '0102'
or in the function ValueSizeConstraint (in constraint.py) in line 106 we count the number of string characters and not octets
to day : line 106 : l = len(value) I corrected by : line 106 : l = len(value)/2 to count the number of OCTETs and not the string characters
in my case it correct the problem
constraint.py
is part of pyasn1, not asn1ate.
But it could very well be that asn1ate is producing the wrong data for pyasn1, so I don't think you should modify pyasn1.
Can you create a reproducible example and run it by the pyasn1 mailing list (cc me), and maybe we can work out together where the problem is, and how it should be solved?
oh yes I'm quite lost in files :D Yes for sure i will
Hi Kim,
In fact the probleme is not in pyasn1,
i was thinking that pyasn1 was expecting an hexa like 'FF0D'
but it wait for a b'\xFF\x0D', so the length in string is the double.
in asn1ate, a default Value 'FF0D'H is converted to 'FF0D'H (not a pretty python syntax) when it have to be converted by b'\xFF\x0D' to be pretty regarding to pyasn1
Sorry for the confusing issue :)
Mourad
I think I understand what the problem is now, but a small, contained example ASN.1 fragment would definitely help.
Here it is:
exctracted from the SimAlliance ASN1
ApplicationInstance ::= SEQUENCE { applicationLoadPackageAID [APPLICATION 15] ApplicationIdentifier, classAID [APPLICATION 15] ApplicationIdentifier, instanceAID [APPLICATION 15] ApplicationIdentifier, extraditeSecurityDomainAID [APPLICATION 15] ApplicationIdentifier OPTIONAL, applicationPrivileges [2] OCTET STRING, lifeCycleState [3] OCTET STRING (SIZE(1)) DEFAULT '07'H, /* Coding according to GP Life Cycle State. */
applicationSpecificParametersC9 [PRIVATE 9] OCTET STRING, systemSpecificParameters [PRIVATE 15] ApplicationSystemParameters OPTIONAL, applicationParameters [PRIVATE 10] UICCApplicationParameters OPTIONAL, processData SEQUENCE OF OCTET STRING OPTIONAL }
The line lifeCycleState [3] OCTET STRING (SIZE(1)) DEFAULT '07'H, define a Default value to '07'H or asn1ate will convert in python as '07'H (not python friendly) it has to be b'\x07' or binascii.unhexlify('07') but definitively not '07'H :)
Regards
Thanks, just what I needed. I'll try and look into this.
Hi guys,
found a new issue, regarding to the size constraint: In case of a HexaString, the length have to be div by 2 file : constraint.py function : ValueSizeConstraint line 106 : l = len(value)/2 to count the number of OCTET
bye
Mourad