cryptologie.net

cryptography, security, and random thoughts

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Hey! I'm David, cofounder of zkSecurity and author of Real-World Cryptography.

More about me

I'm also an advisor at Archetype. I was previously a cryptography architect of Mina at O(1) Labs, the security lead for Libra/Diem at Facebook, and a security engineer at the Cryptography Services of NCC Group. Welcome to my blog about cryptography, security, and other related topics.

“Cryptologie” is the French spelling of “cryptology.”

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    Kasumi

    blog

    kasumi

    KASUMI is a block cipher used in UMTS, GSM, and GPRS mobile communications systems. In UMTS, KASUMI is used in the confidentiality (f8) and integrity algorithms (f9) with names UEA1 and UIA1, respectively. In GSM, KASUMI is used in the A5/3 key stream generator and in GPRS in the GEA3 key stream generator.

    KASUMI

    (and Katsumi/Katsuni is a very famous french porn actress)

    suggested reads:
    → Asiacrypt • blog
    → What is GCM (Galois Counter Mode)? • blog
    → SIMD instructions in crypto • blog
    ← back to all posts blog • 2015-03-03

    recent posts

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    What's next after soulbound NFTs? Self-willed NFTs via zkML
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    How to Make it in a Security Team
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    Getting Into The Zone
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    elsewhere

    book Real-World Cryptography Applied cryptography, from Manning. podcast Two And A Half Coins Crypto, banking & distributed systems. youtube Cryptography videos Concepts & security, explained.