Coinkite on Nostr: #COLDCARD Firmware Upgrade! ## SeedXOR 🌳XOR from Seed Vault (select other parts of ...
#COLDCARD Firmware Upgrade!
## SeedXOR
🌳XOR from Seed Vault (select other parts of the XOR from seeds in the vault). Restore geographically distributed SeedXOR without physically bringing the parts together
📸Seed XOR seeds can be scanned f/ SeedQR instead of typing them by hand
## Multisig
🔐Option for unsorted multisig [multi(…)]
📝JSON wrapped imports to provide custom `name` instead of the filename. Most useful for USB and NFC imports which have no filename
🔬Descriptor checksum is no longer required upon import
⛓️💥Create Airgapped (aka using CC as multisig coordinator) now works with BBQRs
## QR File Share
📁Same as NFC file share, allows user to share any file from SD card via QR/BBQr
## Optimizations and speed
🍄 #libsecp256k1 bumped to latest 0.5.0 (point multiplication algorithm speed up, etc)
🐇⚡️improvements in our signature grinding algo. Updated libsecp plus our optimizations yield 30% improvement in signing speed over previous version (15% in overall signing speed as signing is not the only part of it (validation, change checks, etc.))
## Security
🧐Improve side-channel protection: libsecp256k1 context randomization now happens before each signing session
And much more! Details here
https://blog.coinkite.com/5.4.0-released/ 
Published at
2024-09-12 19:21:33Event JSON
{
"id": "e99166e3cd1b3c4e0b67292c9b98874238f0be39240045909e1fac02037cdcb1",
"pubkey": "56172b53f730750b40e63c501b16068dd96a245e7f0551675c0fec9817ee96e0",
"created_at": 1726168893,
"kind": 1,
"tags": [
[
"t",
"COLDCARD"
],
[
"t",
"libsecp256k1"
]
],
"content": "#COLDCARD Firmware Upgrade!\n\n## SeedXOR\n🌳XOR from Seed Vault (select other parts of the XOR from seeds in the vault). Restore geographically distributed SeedXOR without physically bringing the parts together\n📸Seed XOR seeds can be scanned f/ SeedQR instead of typing them by hand\n\n## Multisig\n🔐Option for unsorted multisig [multi(…)]\n📝JSON wrapped imports to provide custom `name` instead of the filename. Most useful for USB and NFC imports which have no filename\n🔬Descriptor checksum is no longer required upon import\n⛓️💥Create Airgapped (aka using CC as multisig coordinator) now works with BBQRs\n\n## QR File Share\n📁Same as NFC file share, allows user to share any file from SD card via QR/BBQr\n \n## Optimizations and speed\n🍄 #libsecp256k1 bumped to latest 0.5.0 (point multiplication algorithm speed up, etc)\n🐇⚡️improvements in our signature grinding algo. Updated libsecp plus our optimizations yield 30% improvement in signing speed over previous version (15% in overall signing speed as signing is not the only part of it (validation, change checks, etc.))\n\n## Security\n🧐Improve side-channel protection: libsecp256k1 context randomization now happens before each signing session\n\nAnd much more! Details here https://blog.coinkite.com/5.4.0-released/\n\nhttps://m.primal.net/Knzw.jpg",
"sig": "ca175e32c3592fbeecd2872b7be69039d1335cf1d501615144ddbc7561741af76974b605673d1c7565129235e1cce0844ca4ebe80cec6e8b1a8a5dba073ee3d0"
}
