Questions tagged [pyasn1]
42 questions
0
votes
1 answer
Handling nested DER, packed into OCTET STRINGs, in pyasn1
Here's how RFC 5280 defines an X.509 extension field:
Extension ::= SEQUENCE {
extnID OBJECT IDENTIFIER,
critical BOOLEAN DEFAULT FALSE,
extnValue OCTET STRING
-- contains the DER encoding of an ASN.1…
PythonAteMyHamster
- 176
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- 11
0
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1 answer
How to recover the substrate from a pyasn1 object?
I have a complicated nested ASN.1 structure as bytes. I want to find all T61Strings (say) in that structure, in the original byte encoding. Is this possible in pyasn1?
So far, I only know how to locate the the T61Strings (or whatever) in the…
PythonAteMyHamster
- 176
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- 11
0
votes
1 answer
Converting OID of public key,etc in HEX data to the dot format
Hello guys,
I have CV1 RSA certificates that are slightly modified.So, I dont want to use asn1wrap to parse a 'der' file as it makes it too complex sometimes,instead as tags are already fixed for a CV1 certificate i can parse the HEX data of this…
panda_inline4
- 31
- 5
0
votes
1 answer
how do i get the number of clients from an Ap cisco and save it in a variable?
I hope you can help me,
The goal is to get the number of clients that have conected to the ap using pysnmp, I think I'm close, I know I have to use probably pyasn1, but I get to a part that gives me the following error:
('---------->',…
Ricardo Alves
- 57
- 9
0
votes
1 answer
PySNMP SNMPV3 Trap not being sent
I am implementing the pysnmp code for snmpv3, trying to send a trap over to a machine in my network. I can see that the trap is being seen in Wireshark but it does not show up in any of my trap receivers. The code is as below :
from pysnmp.hlapi…
E..Nygma149
- 11
- 5
0
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1 answer
pyasn1 prettyPrint() - display integers in hex
I have many univ.Integer(), but would like to print all of them in hex, which are easy to related to the decoding of substrate.
How can I do it ?
one such example is
namedtype.NamedType('vendor-id', univ.Integer())
namedtype.NamedType('device-id',…
mungayree
- 313
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- 12
0
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1 answer
Implement ASN1 structure properly using pyasn1
I am new to ASN1 and want to implement this structure using pyasn1
ECPrivateKey ::= SEQUENCE {
version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1),
privateKey OCTET STRING,
parameters [0] ECParameters {{ NamedCurve }}…
abhi
- 366
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- 17
0
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1 answer
[Python ASN1]: GeneralizedTime pyasn1 implementation
Here is my asn1 grammar representation:-
MiepPullWtdr ::= [0] SEQUENCE
{
timeStamp [8] GeneralizedTime
}
I need help in implementing the same using pyasn1.
Here is my code snippet:-
from pyasn1.type import univ, namedtype,…
sam
- 635
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- 18
0
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0 answers
Pyasn1 nested sequence - incompatible tags
I need help with my code. I have two structs, which are using third.
class Bar(univ.Sequence):
componentType = namedtype.NamedTypes(
…
saders
- 33
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- 6
0
votes
1 answer
pyasn1.error.PyAsn1Error: Unknown bit identifier
I tried to use the method prettyIn from the python library pyasn1.type.univ.BitString.
This method takes a string, but whatever I pass in, in the python interactive shell raises the exception pyasn1.error.PyAsn1Error: Unknown bit identifier. I…
The Drummer from Kubuntu
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0
votes
1 answer
Invalid files when creating X509 certificates containing extensions with newer versions of PyASN1
I have a python script that used to work for generating X509 certificates with certificate extensions using PyASN1 and pyasn1_modules modules. But now that I've updated these modules to the latest versions from pypi (previously they were from Ubuntu…
zaadeh
- 1,711
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0
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1 answer
Parsing X509 extensions with pyasn1
I've got an extension which is described as follows:
Extension().setComponentByPosition(0, ObjectIdentifier(2.5.29.19))
.setComponentByPosition(1, Boolean('False'))
.setComponentByPosition(2, Any(hexValue='04023000'))
So based…
viraptor
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