asn1

v3.3.0 safe
3.0
Low Risk

Python-ASN1 is a simple ASN.1 encoder and decoder for Python 2.7+ and 3.5+.

🤖 AI Analysis

Final verdict: SAFE

The package appears safe based on the low scores across all risk categories, with no indications of malicious activity. The moderate obfuscation risk is not enough to warrant further suspicion.

  • No network or shell risks
  • Low credential and metadata risks
  • Moderate obfuscation risk due to base64 decoding usage
Per-check LLM notes
  • Network: No network calls suggest normal behavior for an ASN.1 processing library.
  • Shell: No shell executions indicate the package does not attempt to execute external commands.
  • Obfuscation: The use of base64 decoding suggests potential obfuscation or encryption handling, but without context, it's unclear if this is malicious.
  • Credentials: No clear patterns indicating credential harvesting were detected.
  • Metadata: The maintainer has only one package, which might indicate a new or less active account but does not strongly suggest malicious intent.

📦 Package Quality Overall: Medium (7.0/10)

✦ High Test Suite 9.0

Test suite present — 3 test file(s) found

  • Test runner config found: setup.cfg
  • 3 test file(s) detected (e.g. test_asn1.py)
◈ Medium Documentation 7.0

Some documentation present

  • 1 documentation file(s) (e.g. conf.py)
  • Detailed PyPI description (6912 chars)
○ Low Contributing Guide 4.0

No contributing guide or governance files found

  • Development Status classifier >= Beta
◈ Medium Type Annotations 5.0

Partial type annotation coverage

  • Type checker (mypy / pyright / pytype) referenced in project
✦ High Multiple Contributors 10.0

Active multi-contributor project

  • 8 unique contributor(s) across 100 commits in andrivet/python-asn1
  • Active community — 5 or more distinct contributors

🔬 Heuristic Checks

✓ Outbound Network Calls

No suspicious network call patterns found

⚠ Code Obfuscation score 10.0

Found 6 obfuscation pattern(s)

  • self._buffer += base64.b64decode(line) # All data? if size < 0:
  • gAIvIQAG0Yjw==' buf = base64.b64decode(encoded) dec = asn1.Decoder() dec.start(buf
  • ("Example 2") encoded = b"\x23\x0c\x03\x02\x00\x0b\x03\x02\x00\x0b\x03\x02\x04\x0f" with asn1.Decoder(stream=encoded) as decoder:
  • ("Example 3") encoded = b"\x30\x80\x13\x05\x74\x65\x73\x74\x31\x13\x05\x74\x65\x73\x74\x32\x30\x80\x02\x01\x01\x09\x03\x80\xfd\x01\x04\x03\x01\x02\x03\x00\x00\x00\x00" with asn1.Decoder(stream=encoded) as decoder:
  • 4") encoded = ( b"\x30\x82\x04\x0e\x30\x82\x03\x77\xa0\x03\x02\x01\x02\x02\x02\x15" b"\x30\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01
  • 01\x02\x02\x02\x15" b"\x30\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x05\x05\x00" b"\x30\x81\xbb\x31\x0b\x30\x09\x06\x03\x55\x04\x06
✓ Shell / Subprocess Execution

No shell execution patterns detected

✓ Credential Harvesting

No credential harvesting patterns detected

✓ Typosquatting

No typosquatting candidates detected

✓ Registered Email Domain

Email domain looks legitimate: andrivet.com

✓ Suspicious Page Links

All external links appear legitimate

✓ Git Repository History

Repository andrivet/python-asn1 appears legitimate

⚠ Maintainer History score 2.0

1 maintainer concern(s) found

  • Author "Sebastien Andrivet" appears to have only 1 package on PyPI (new or inactive account)
✓ Known CVE Vulnerabilities

No known vulnerabilities found in OSV database.

💡 AI App Starter Prompt

Use this prompt to build a project with asn1 
Create a mini-application that allows users to encode and decode data using ASN.1 standards. This application will serve as a basic tool for understanding and working with ASN.1 encoding/decoding in Python. Here’s a detailed breakdown of the requirements and steps to follow:

1. **Project Overview**: Your goal is to develop a command-line tool that takes user input and either encodes it into ASN.1 format or decodes it from ASN.1 back into a readable format.

2. **Features**:
   - **Encode Functionality**: Users should be able to input plain text or structured data (like dictionaries) and have it encoded into ASN.1 format.
   - **Decode Functionality**: Similarly, users should be able to input ASN.1 encoded data and have it decoded back into its original form.
   - **Help Menu**: A help menu that explains how to use each feature and provides examples.

3. **Utilizing the 'asn1' Package**:
   - Use the Python-ASN1 package to handle the encoding and decoding processes. Make sure to install the package first via pip (`pip install python-asn1`).
   - Explore the documentation of the 'asn1' package to understand how different types of data can be encoded and decoded.

4. **Development Steps**:
   - **Step 1**: Set up your development environment with Python installed and create a new virtual environment.
   - **Step 2**: Install the 'asn1' package within your virtual environment.
   - **Step 3**: Write functions for encoding and decoding data. Ensure these functions utilize the 'asn1' package effectively.
   - **Step 4**: Create a main script that serves as the interface between the user and the functionality provided by your functions. This script should handle user inputs, call the appropriate functions, and display outputs.
   - **Step 5**: Implement error handling to manage cases where the input data cannot be encoded or decoded successfully.
   - **Step 6**: Add a help menu that guides users on how to interact with the application.
   - **Step 7**: Test your application thoroughly with various types of input data to ensure reliability.

5. **Additional Enhancements (Optional)**:
   - Allow users to save encoded ASN.1 data to a file and load it for decoding.
   - Provide visual feedback for successful operations and errors.

This project will not only help you understand the basics of ASN.1 encoding and decoding but also give you hands-on experience with the 'asn1' package.

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