python-asn1crypto
Port variant py39
Summary Performant ASN.1 handling library (3.9)
Package version 1.4.0
Homepage https://github.com/wbond/asn1crypto
Keywords python
Maintainer Python Automaton
License Not yet specified
Other variants py310
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Last modified 20 NOV 2021, 04:14:38 UTC
Port created 05 FEB 2019, 15:55:37 UTC
Subpackage Descriptions
single # asn1crypto A fast, pure Python library for parsing and serializing ASN.1 structures. - [Features] - [Why Another Python ASN.1 Library?] - [Related Crypto Libraries] - [Current Release] - [Dependencies] - [Installation] - [License] - [Documentation] - [Continuous Integration] - [Testing] - [Development] - [CI Tasks] [GitHub Actions CI] [Travis CI] [AppVeyor] [CircleCI] [PyPI] ## Features In addition to an ASN.1 BER/DER decoder and DER serializer, the project includes a bunch of ASN.1 structures for use with various common cryptography standards: | Standard | Module | Source | | ---------------------- | ------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- | | X.509 | [`asn1crypto.x509`] | [RFC 5280] | | CRL | [`asn1crypto.crl`] | [RFC 5280] | | CSR | [`asn1crypto.csr`] | [RFC 2986], [RFC 2985] | | OCSP | [`asn1crypto.ocsp`] | [RFC 6960] | | PKCS#12 | [`asn1crypto.pkcs12`] | [RFC 7292] | | PKCS#8 | [`asn1crypto.keys`] | [RFC 5208] | | PKCS#1 v2.1 (RSA keys) | [`asn1crypto.keys`] | [RFC 3447] | | DSA keys | [`asn1crypto.keys`] | [RFC 3279] | | Elliptic curve keys | [`asn1crypto.keys`] | [SECG SEC1 V2] | | PKCS#3 v1.4 | [`asn1crypto.algos`] | [PKCS#3 v1.4] | | PKCS#5 v2.1 | [`asn1crypto.algos`] | [PKCS#5 v2.1] | | CMS (and PKCS#7) | [`asn1crypto.cms`] | [RFC 5652], [RFC 2315] | | TSP | [`asn1crypto.tsp`] | [RFC 3161] | | PDF signatures | [`asn1crypto.pdf`] | [PDF 1.7] | ## Why Another Python ASN.1 Library? Python has long had the [pyasn1] and [pyasn1_modules] available for parsing and serializing ASN.1 structures. While the project does include a comprehensive set of tools for parsing and serializing, the performance of the library can be very poor, especially when dealing with bit fields and parsing large structures such as CRLs. After spending extensive time using *pyasn1*, the following issues were identified: 1. Poor performance 2. Verbose, non-pythonic API 3. Out-dated and incomplete definitions in *pyasn1-modules* 4. No simple way to map data to native Python data structures 5. No mechanism for overridden universal ASN.1 types The *pyasn1* API is largely method driven, and uses extensive configuration objects and lowerCamelCase names. There were no consistent options for converting types of native Python data structures. Since the project supports out-dated versions of Python, many newer language features are unavailable for use. Time was spent trying to profile issues with the performance, however the architecture made it hard to pin down the primary source of the poor performance. Attempts were made to improve performance by utilizing unreleased patches and delaying parsing using the `Any` type. Even with such changes, the performance was still unacceptably slow. Finally, a number of structures in the cryptographic space use universal
Configuration Switches (platform-specific settings discarded)
PY310 OFF Build using Python 3.10 PY39 ON Build using Python 3.9
Package Dependencies by Type
Build (only) python-pip:single:py39
autoselect-python:single:standard
Build and Runtime python39:single:standard
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main mirror://PYPIWHL/b5/a8/56be92dcd4a5bf1998705a9b4028249fe7c9a035b955fe93b6a3e5b829f8
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4bcdf33c861c7d40bdcd74d8e4dd7661aac320fcdf40b9a3f95b4ee12fde2fa8 104031 asn1crypto-1.4.0-py2.py3-none-any.whl
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