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Cryptographic Issues in Cloudflare's Circl FourQ Implementation (CVE-2025-8556)
The vulnerabilities we found in Cloudflare's CIRCL FourQ implementation: invalid-point attacks, Edwards-curve edge cases, and the disclosure that fixed them.
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Decoding the 90s: Cryptography in Early Software Development (2023)
In August 2020 we were commissioned to recover a cache of locked QText documents from the mid-90s. This is the process of analyzing the encrypted documents and reverse engineering a DOS-era Hebrew-English word processor written in Turbo Pascal.