Sam

@sam280

Applied crypto, PKI, identity, electronic signature, eIDAS, blockchains.

Vrijeme pridruživanja: travanj 2009.

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  1. proslijedio/la je Tweet
    prije 16 sati

    Blockchains are bad at nearly everything. Except for Bitcoin. Blockchain was built to build Bitcoin.

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  2. prije 12 sati

    ETSI's call for experts on Identity Proofing for Trust Services (.doc). Apply before 16/03/2020, we need new blood in there 🙂

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  3. proslijedio/la je Tweet
    30. sij

    Google OpenSK is an open-source security key that supports FIDO and U2F:

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  4. 30. sij

    Sums up pretty well the degree of ignorance in the UK regarding EU matters which has led to this mess🤦‍♂️

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  5. 26. sij

    "This suggests that, at similar classical security levels, elliptic curve cryptography is less secure than RSA against a quantum attack" 🤔

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  6. 24. sij

    Apparently Mozilla is now delegating their CP/CPS reviews to Google🤷‍♂️

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  7. 20. sij

    Switzerland will vote on whether their national scheme should allow private IdPs or not (probably using the voting solution they bought from a Spanish company 😊)

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  8. 17. sij

    So DarkMatter (which some consider too shady to be a trusted CA) will organize a Face-to-Face CA/Browser Forum in Dubai in 2021🤷‍♂️

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  9. proslijedio/la je Tweet
    17. sij
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  10. 16. sij

    With CRLite Firefox will obtain its revocation info for the entire web from CT Logs via Google's Cloud... 🤔

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  11. proslijedio/la je Tweet
    15. sij

    1. Find an ecc root cert C with pk 2. Apply Vaudenay|(Pornin&Stern) 2004 get C' with sk',params' for that pk 3. Create a normal code signing cert C'' with key pair (pk'',sk'') and sign software with sk'' 4. Sign C'' with sk' 5. Present software,C'',C' to windows' sigcheck64.exe

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  12. proslijedio/la je Tweet
    15. sij

    Romania to introduce electronic ID cards starting 2021

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  13. proslijedio/la je Tweet
    15. sij
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  14. 14. sij

    Batch signing for TLS: What's the use case ? 🤔

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  15. proslijedio/la je Tweet
    13. sij

    Sources say Microsoft on Tuesday will fix an extraordinarily scary flaw in all Windows versions, in a core cryptographic component that could be abused to spoof the source of digitally signed software. Apparently DoD & a few others got an advance patch

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  16. 13. sij

    Who will be added to the list in 2020 ? At least these: 🇵🇹 Portugal 🇳🇱Netherlands 🇨🇿 Czechia 🇸🇰Slovakia 🇱🇻 Latvia 🇧🇪 Belgium (again) 🇮🇹 Italy (again) 🇬🇧 UK (maybe)

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  17. proslijedio/la je Tweet
    9. sij

    Announcing BLAKE3! 🥳 * Faster than MD5, SHA-1, SHA-2, SHA-3, and BLAKE2 * Merkle tree: unlimited parallelism, verified streaming * Builtin MAC, KDF, XOF * One algorithm, no variants * Rust crate: Try it: cargo install b3sum

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  18. proslijedio/la je Tweet

    SHA-1 is a Shambles - First Chosen-Prefix Collision on SHA-1 and Application to the PGP Web of Trust "When renting cheap GPUs, this translates to a cost of 11k US$ for a collision, and 45k US$ for a chosen-prefix collision." Ouch.

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  19. 6. sij

    Almost 6 months since DarkMatter appealed Mozilla's refusal to include them in their root store (PDF: ) and still no decision. Not so surprising though when your dispute resolution procedure looks like this: 🤷‍♂️

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  20. 5. sij

    An italian journalist challenges the inaccurate statement of an italian minister about and with his own inaccurate arguments🤦‍♂️Maybe should step in and clarify this mess ?

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