spacestr

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tani
Member since: 2024-05-14
tani
tani 5h

็›—ๅ“ใ‚’็›—ๅ“ใจ็Ÿฅใ‚‰ใšใซ่ฒฐใ„ๅ—ใ‘ใฆใ—ใพใฃใฆใ€ใ•ใ‚‰ใซใใ‚Œใ‚’ใ€ๅฃฒๅดใ—ใŸๆ™‚ใ€ใใฎไบบใŒ็Šฏ็ฝชใซใชใ‚‹ใฎใ‹๏ผŸใจใ„ใ†่ญฐ่ซ–ใงใ™ใญใ€‚

tani
tani 5h

็Šฏ็ฝชใฎๆ‰“ใกๅˆใ‚ใ›ใ‚’ใ™ใ‚‹ใŸใ‚ใซOpenSlotsใŒไฝฟใ‚ใ‚ŒใŸๆ™‚ใฎ่ญฐ่ซ–ใŒๅฟ…่ฆใ ใ‚ใ†ใ€ใจใ„ใ†ๆ‰นๅˆคใฏใ‚ใ‚‹ใจๆ€ใ„ใพใ™ใญใ€‚ ้–‹็™บ่€…ใฎๅƒ•ใฏใ‚‚ใกใ‚ใ‚“ใ€ใƒชใƒฌใƒผ้‹็”จ่€…ใซใ‚‚ใ€‚ ้“ๅพณใƒปๅ€ซ็†ใƒปๆณ•ๅพ‹ใฎ้ขใงใ€ๅ€‹ใ€…ใฎ่ญฐ่ซ–ใฏใ‚ใ‚‹ใจๆ€ใ„ใพใ™ใŒใ€ๆš—ๅทๅŒ–ใ•ใ‚ŒใŸใ‚‚ใฎใ‚’ๆต้€šใ•ใ›ใ‚‹ใ“ใจใซ้–ขใ—ใฆใฏใ€ใ€Œๅ–„ๆ„ใฎ็ฌฌไธ‰่€…ใ€ใจใ„ใ†่งฃ้‡ˆใŒ้ฉ็”จใ•ใ‚Œใ‚‹ใจๆ€ใ„ใพใ™ใ€‚ https://fujisawa.vbest.jp/columns/general_civil/g_lp_indi/7515/

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tani 5h

ใฟใ‚“ใชใ€ๆ–ญใ‚‰ใ‚Œใ‚‹ๆœชๆฅใ—ใ‹ใ€่€ƒใˆใฆใชใใฆใ€ใ“ใ‚Œใพใงใฎไบบ็”ŸใŒ้€ใ‘ใฆ่ฆ‹ใˆใพใ™ใญใ‡ใ€‚๏ผˆ็‚ŽไธŠใƒžใƒผใ‚ฑใƒ†ใ‚ฃใƒณใ‚ฐ๏ผ‰

tani
tani 5h

ใกใชใฟใซๅƒ•ใฏไธกๆ–นใจใ‚‚๏ผ๏ผ…ใชใฎใงๅŒใ˜็ขบ็އใงใ™๏ผ

tani
tani 5h

ๅ‰่€…ใฏใ€ใ€Œๆ—ฅๆ™‚ใจใ‚คใƒ™ใƒณใƒˆใ€ใฎไธกๆ–นใฎๅฏๅฆใ‚’่žใ„ใฆใ„ใพใ™ใŒใ€ๅฎŸใฏๅพŒ่€…ใฏใ€Œใ‚คใƒ™ใƒณใƒˆใ€ใฏOKใฎๅ‰ๆใฎใ‚‚ใจใงใ€Œๆ—ฅๆ™‚ใ€ใฎใฟๅฏๅฆใ‚’่žใ„ใฆใ„ใพใ™ใญใ€‚

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tani 5h

ๆฐ—ใซใชใ‚‹็•ฐๆ€งใ‚’ใƒ‡ใƒผใƒˆใซ่ช˜ใ†ๆ™‚ใ€ใ€Œๆฅ้€ฑใฎๅœŸๆ›œๆ—ฅๆ˜ ็”ปใ‚’่ฆ‹ใซ่กŒใ‹ใชใ„๏ผŸใ€ใจใ€Œๆ˜ ็”ปใ‚’่ฆ‹ใซใ„ใใŸใ„ใ‚“ใ ใ‘ใฉใ€ใ„ใค็ฉบใ„ใฆใ‚‹๏ผŸใ€ใฎๆˆๅŠŸ็އใฎ้•ใ„ใ‚’่€ƒใˆใฆใฟใฆใปใ—ใ„ใ€‚๏ผˆใŸใ ใ—ใ€ๅซŒใ‚ใ‚Œใฆใ„ใชใ„ใ‚‚ใฎใจใ™ใ‚‹๏ผ‰

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tani 6h

ใƒชใƒฌใƒผ้‹็”จๅดใฎๆ„่ฆ‹ใใ‘ใฆๅ‹‰ๅผทใซใชใ‚Šใพใ™๏ผใ‚†ใใ‚†ใใฏ openslots ่‡ช่บซใฎ ใƒชใƒฌใƒผใ‚‚็”จๆ„ใ™ใ‚‹่ฆšๆ‚Ÿใงใ™๏ผ

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tani 6h

ใŸใ ่ชฟๆ•ดใ•ใ‚“ใจใ‹ใ‚’ไป•ไบ‹๏ผˆใซ่ฟ‘ใ„ใ‚ทใƒผใƒณ๏ผ‰ใงไฝฟใŠใ†ใจใ™ใ‚‹ใจใ€ๅๅ‰ใจใ‹้ฉๅฝ“ใชใƒใƒณใƒ‰ใƒซๅใซใ™ใ‚‹ใจใฏใ„ใˆใ€้›†ๅˆๆ™‚้–“ใจใ‹ใฎๅ€‹ไบบๆƒ…ๅ ฑใŒใ‚ตใƒผใƒใƒผใซใฎใ‚‹ใฎใŒใ€ใกใ‚‡ใฃใจใพใšใ„ใ‚ˆใชใƒผใจใ€‚ใชใฎใงใƒžใƒซใฃใจๆš—ๅทใ—ใฆใ—ใพใˆใฐใ€ๅฎ‰ๅ…จใ ใชใจๆ€ใ„ใคใ„ใฆไฝœใ‚Šใพใ—ใŸใ€‚

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tani 6h

ไป•ไบ‹ไปฒ้–“ใจๆ‰“ใกๅˆใ‚ใ›ใฎ่ชฟๆ•ดใ™ใ‚‹ใจใใซใ€ใฉใฎๆ™‚้–“ใŒ็ฉบใ„ใฆใ„ใ‚‹ใ‹ใ‚’ใ€ไบ’ใ„ใซ่ชฟๆ•ดใ™ใ‚‹ๅฟ…่ฆใŒใ‚ใฃใฆใ€ใใฎๅ ดๅˆใ€ใ€Œๅ€™่ฃœๆ—ฅใ‚’ๆฑบใ‚ใฆไผใˆใชใใกใ‚ƒใ„ใ‘ใชใ„ใ€ใ€Œ็›ธๆ‰‹ใ‚‚็ฉบใ„ใฆใใ†ใชๆ™‚้–“ใ‚’้ธใถใ€ใจใ„ใ†็ฉบๆฐ—่ชญใฟใŒ็™บ็”Ÿใ™ใ‚‹ใ‚“ใงใ™ใŒใ€When2meetใจใ‹ใ ใจใ€้›‘ใซไบŒ้€ฑ้–“้ธใ‚“ใง้€ใ‚Šใ‚ใฃใฆใ€้ฉๅฝ“ใซ่‰ฒใ‚’ๅก—ใ‚‹ใจใ€ๆฟƒใใชใ‚‹ๅ ดๆ‰€ใŒๅ‡บใฆใใฆใ€ใใ‚Œใ‚’ๆ‰“ใกๅˆใ‚ใ›ใซๆŽก็”จใ™ใ‚‹ใ€ใจใ„ใ†ไฝฟใ„ๆ–นใงใ™ใญ

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tani 6h

ใ‚ฐใƒฉใƒ‡ใƒผใ‚ทใƒงใƒณใฎ่‰ฒใ‚‚ใฃใจๆฟƒใใ—ใŸๆ–นใŒ่‰ฏใ•ใใ†ใงใ™ใญ

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tani 6h

I built OpenSlots, a zero-knowledge scheduling application that works without a trusted server. Most scheduling tools (When2meet, Doodle, Calendly, even self-hosted ones) leak significant metadata: who meets whom, when, and how often. OpenSlots treats scheduling as a client-side protocol rather than a hosted service. Key ideas: - No trusted third party: Runs as a browser-based thick client. Nostr relays are used only as untrusted storage. - End-to-end encryption (NIP-44): All room data and availability are encrypted with ChaCha20-Poly1305. - URL fragment key distribution: The symmetric room key lives only in the URL fragment and is never sent to servers or relays. - Blinded indexing: Room identifiers are indexed on relays via HMAC-SHA256(room_id, key), preventing trivial enumeration or mapping by relays. Relays can observe ciphertexts, tags, and timing, but cannot read meeting content or recover room identifiers without the key. This removes the central database as a point of trust. This is not full anonymity: IP addresses and timing remain observable. The goal is trust minimization and metadata reduction, not network-layer anonymity. Demo and documentation: https://openslots.pages.dev Technical Details: https://github.com/tani/openslots Feedback is welcome, especially on the threat model, blinded indexing design, and usability trade-offs of URL-as-bearer-key approaches.

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