From my colleagues on the IETF PKIX list were a lot of asn.1
oldtimers live...
>>>
from pyasn1.type import univ
>>>
from pyasn1.codec.der.decoder import decode as der_decoder
>>>
from pyasn1.codec.der.encoder import encode as der_encoder
>>>
import binascii
>>>
oid = univ.ObjectIdentifier('1.3.6.1.4.1.6715.2.6.6')
>>>
s = der_encoder(oid)
>>>
print(binascii.hexlify(s))
060a2b06010401b43b020606
For this I don't need the der_decoder, only the encoder.
So I am set. Actually since for my usage, the OID if fixed, only
the content varies, I can just use the output above and prepend it
to the value! Don't have to call asn1 for every time to just get
the same value!
thanks all.
On 5/7/23 10:15, stan via users wrote:
On Sun, 7 May 2023 08:46:26 -0400
Robert Moskowitz <rgm@htt-consult.com> wrote:
from /usr/share/doc/python3-asn1/README.rst
of the fedora package python3-asn1
How to use Python-asn1
======================
.. note:: You can find more detailed documentation on the `Usage`_ page.
.. _Usage: usage.rst
Encoding
--------
If you want to encode data and retrieve its DER-encoded representation,
use code such as:
.. code-block:: python
import asn1
encoder = asn1.Encoder()
encoder.start()
encoder.write('1.2.3', asn1.Numbers.ObjectIdentifier)
encoded_bytes = encoder.output()
Decoding
--------
If you want to decode ASN.1 from DER or BER encoded bytes, use code
such as:
.. code-block:: python
import asn1
decoder = asn1.Decoder()
decoder.start(encoded_bytes)
tag, value = decoder.read()
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