x690
Encode and decode ASN.1 data in BER (ITU-T X.690) with pure Python. x690 turns every encoded value into a typed Python object, decodes documents of a million values in a few megabytes of memory, and takes new types with a few lines of code. It is the encoding layer of puresnmp.
Documentation: https://exhuma.github.io/x690/
Installation
x690 needs Python 3.11 or newer:
pip install x690
Example
>>> from x690 import decode >>> from x690.types import Integer, OctetString, Sequence >>> data = bytes(Sequence([Integer(42), OctetString(b"hello")])) >>> data b'0\n\x02\x01*\x04\x05hello' >>> decode(data) (Sequence([Integer(42), OctetString(b'hello')]), 12)
The documentation covers how to encode and decode values, how to add custom types and which types convert to which Python values.
Project status
The API is stable. Context-specific tags resolve per enclosing type, so structures that reuse a tag such as [0], as X.509 and LDAP do, can be described. Work continues on declaring types by position and on Python values for more universal types. Choosing x690 compares x690 with other ASN.1 libraries and lists its current limitations.
x690 follows Semantic Versioning. The compatibility policy defines what counts as a breaking change and how deprecation works.
1 maintainer
Metadata
1 maintainer
Release files for x690 2.0.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
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Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| x690-2.0.0-py3-none-any.whl | Python 3 | none | any | Details for x690-2.0.0-py3-none-any.whl |
Total release size: 99.2 kB
Release files / x690-2.0.0.tar.gz
| Download URL | x690-2.0.0.tar.gz |
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| Tags | Python 3 |
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