{"schema_version":"onlylabs.public_signal.v1","title":"Microsoft Repo: microsoft/MSR-JavaScript-Crypto","description":"Microsoft repo signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/6ce70f7d-52ff-4576-8c8f-f13356d3e314","json_url":"https://onlylabs.fyi/signals/6ce70f7d-52ff-4576-8c8f-f13356d3e314/signal.json","generated_at":"2026-06-26T23:25:18.992Z","evidence_latest_fetched_at":"2026-06-26T07:02:40.723037+00:00","signal_first_seen_at":"2026-06-26T07:00:34.382543+00:00","org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/microsoft","dossier_json_url":"https://onlylabs.fyi/labs/microsoft/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/6ce70f7d-52ff-4576-8c8f-f13356d3e314","signal_json":"https://onlylabs.fyi/signals/6ce70f7d-52ff-4576-8c8f-f13356d3e314/signal.json","source":"https://github.com/microsoft/MSR-JavaScript-Crypto","lab_dossier":"https://onlylabs.fyi/labs/microsoft","lab_dossier_json":"https://onlylabs.fyi/labs/microsoft/dossier.json","analysis":"https://onlylabs.fyi/analysis/microsoft","analysis_json":"https://onlylabs.fyi/analysis/microsoft/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/microsoft/evidence.json","category":"https://onlylabs.fyi/frontier","category_json":"https://onlylabs.fyi/frontier.json","category_feed":"https://onlylabs.fyi/frontier/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","topic":null,"topic_signals_json":null,"topic_feed":null,"data_business":null},"answer_pack":{"answer":"Microsoft published microsoft/MSR-JavaScript-Crypto (JavaScript). 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The algorithms are exposed via the [W3C Web Cryptography API](https://www.w3.org/TR/WebCryptoAPI/). The library currently supports RSA encryption (OAEP) and digital signature (PSS); AES-CBC and GCM encrypt/decrypt; SHA-256/384/512, HMAC with supported hash functions; PRNG (AES-CTR based) as specified by NIST; ECDH; ECDSA; and KDF (Concat). The library is tested on IE8, 9, 10, 11, Microsoft Edge and latest Firefox, Chrome, Opera, and Safari browsers. This library includes big-number integer arithmetic to support the aforementioned cryptographic algorithms. 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