Joined March 2026
Photos and videos
Tyojan retweeted
昨日BlackHat Asia 2026で発表したスライドが公式HPから公開されました。 Breaking the Illusion of Key Zeroization: How OS, Libraries, and HardwareKeep Your AES Keys Alive i.blackhat.com/Asia-26/Prese… FPGAで実装したPeriodic-AESKeyfingerのオープンソースURLもついています。 オープンソースで公開している

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📣 Our talk at Black Hat Asia 2026: Zeroizing cryptographic keys is harder than you think. Interactions across apps, libs, OS, and hardware can break zeroization. Using an FPGA, we observe memory and show AES keys persist. 📅 April 23, 2:30 PM blackhat.com/asia-26/briefin… #BHASIA

BLACK HAT ASIA SPEAKER SPOTLIGHT SERIES 💡
Meet Toyofumi Sawa @_Tyojan, Ph.D. candidate at the Institute of Information Security (Japan), as he answers three key questions in our latest Spotlight video: 👉 What are you most excited about for Black Hat Asia 2026? 
👉 What will your session focus on?
 👉 What’s one key insight or takeaway attendees can expect? Catch his Black Hat Asia Briefing, “Breaking the Illusion of Key Zeroization: How OS, Libraries, and Hardware Keep Your AES Keys Alive,” where he uncovers why cryptographic keys often persist in memory despite zeroization—and what this means for real-world system security. 🔐⚠️ Don’t miss his deep dive into key persistence, system-level behavior, and cryptographic risk: bit.ly/46smjXh #BHASIA #Cybersecurity #Cryptography #SystemSecurity #MemoryForensics
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Tyojan retweeted
BLACK HAT ASIA SPEAKER SPOTLIGHT SERIES 💡
Meet Toyofumi Sawa @_Tyojan, Ph.D. candidate at the Institute of Information Security (Japan), as he answers three key questions in our latest Spotlight video: 👉 What are you most excited about for Black Hat Asia 2026? 
👉 What will your session focus on?
 👉 What’s one key insight or takeaway attendees can expect? Catch his Black Hat Asia Briefing, “Breaking the Illusion of Key Zeroization: How OS, Libraries, and Hardware Keep Your AES Keys Alive,” where he uncovers why cryptographic keys often persist in memory despite zeroization—and what this means for real-world system security. 🔐⚠️ Don’t miss his deep dive into key persistence, system-level behavior, and cryptographic risk: bit.ly/46smjXh #BHASIA #Cybersecurity #Cryptography #SystemSecurity #MemoryForensics
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Black Hat Asia 2026採択を機にTwitterを始めました。よろしくお願いします!! I’ve started using X as part of my participation in Black Hat Asia 2026. I’ll be presenting my research on AES key persistence and memory forensics using FPGA. Nice to meet you all! #BHASIA
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