{"categories":[{"label":"Cryptography","url":"https://skillfed.io/packages/category/security-cryptography/2"},{"label":"Communications","url":"https://skillfed.io/packages/category/communications"}],"enrichment":{"capability":"Builds and parses AS2 protocol messages with compression, signing, encryption, and MDN (Message Disposition Notification) handling for secure B2B file exchange.","skillfed_tags":["b2b-messaging","edi-protocol","as2-standard"],"use_cases":["Build and send encrypted, signed AS2 messages to trading partners and parse their MDN responses to confirm delivery.","Receive and validate incoming AS2 messages from partners, verify signatures, decrypt payloads, and generate synchronous or asynchronous MDN receipts.","Integrate AS2 message handling into a custom HTTP server or client without relying on a full EDI platform.","Parse MIME-encoded AS2 payloads to extract and verify the integrity of transmitted EDI documents or files.","Manage organization and partner credentials (signing keys, encryption certificates) for multi-partner B2B workflows."],"what_it_does":"pyas2lib is a pure-Python library for constructing and parsing AS2 protocol messages used in B2B secure file exchange. It handles the full message lifecycle: compression, signing, encryption, MIME construction on the sender side, and decompression, decryption, signature verification on the receiver side. It also manages MDN (Message Disposition Notification) responses, which confirm delivery and processing status. The library decouples message handling from HTTP transport, so you manage the network layer yourself.\n\nThe package depends on three cryptographic libraries: asn1crypto for ASN.1 parsing, oscrypto for low-level crypto operations, and pyOpenSSL for certificate and key management. It targets Python 3.7\u20133.10 and is classified as Beta. The library is suitable for applications that need to exchange EDI or other structured data with trading partners over HTTP using the AS2 standard (RFC 4130).","worth_installing":"Yes, if you need AS2 protocol support and can accept a copyleft GPL v2.0 license. The library is stable (Beta, no known vulnerabilities), has low install friction, and remains maintained. The 510-day release cycle suggests slow evolution rather than abandonment; check whether the feature set matches your AS2 requirements before committing. Not suitable for proprietary closed-source applications without a separate commercial license."},"id":"pyas2lib","links":{"html":"https://skillfed.io/packages/pyas2lib","md":"https://skillfed.io/packages/pyas2lib.md","pypi":"https://pypi.org/project/pyas2lib/"},"maintenance":{"status":"aging"},"meta":{"latest_release":"2025-03-22","license_spdx":null,"license_treatment":"copyleft","name":"pyas2lib","python_support":"unspecified","summary":"Python library for building and parsing AS2 Messages"},"popularity":{"monthly_downloads":119745,"position":12057,"tier":"top_15000"},"security":{"n_vulnerabilities":0},"version":"1.4.4"}