Series: Zero to Zero Knowledge
Mnemonic aba nsɛmfua gyina cryptocurrency afã horow a ɛho hia sen biara no mu biako ase - self-custody. Ɛnnɛ yɛsua sɛdeɛ wɔyɛ aba kasasin na wɔde di dwuma wɔ sika kotokuo mu.
Wɔde BIP-39 nkyerɛkyerɛmu, kasasin a wɔtaa de di dwuma nnɛ no na ɛkyerɛkyerɛ kasasin a wɔde san nya mu.
Nsɛmfua a wɔde san yɛ adwuma no bɔ fi ase denam randomness a ɛde ba no so. Entropy pii kyerɛ ahobammɔ a ɛkorɔn. Wobu entropy 128 bits sɛ ɛdɔɔso ma wɔn a wɔde di dwuma dodow no ara.
Ɛgyina entropy a edi kan no tenten so no, kasasin a wɔde san ba no bɛyɛ nsɛmfua 12 kosi 24.
Yɛhyɛ aseɛ denam entropy 128 bits a yɛyɛ so.
Yɛde SHA256 na ɛyɛ hash entropy no. Hash yi mu bits kakraa bi a edi kan no bɛyɛ checksum. Eyi ma yenya nsateaa soronko bi ma yɛn entropy.
Wɔakyekyɛ bits 132 (entropy 128 + checksum 4) no nyinaa mu ayɛ no asinasin a ɛyɛ bits 11.
Wɔdannan 11-bit nnidiso nnidiso biara ma ɛyɛ decimal nɔma (0-2047). BIP-39 nsɛmfua a wɔahyehyɛ no kura nsɛmfua 2048 pɛpɛɛpɛ (Borɔfo, Spania, China, ne nea ɛkeka ho).
Wɔde saa nɔma ahorow yi hwehwɛ asɛmfua a ɛne no hyia wɔ nsɛmfua a wɔahyehyɛ no mu.
Nea efi mu ba: Seesei yɛwɔ kasasin a ahobammɔ wom, a nnipa betumi akenkan a ɛwɔ nsɛmfua 12 a wɔde san nya ahoɔden!
Sɛ wode kasasin a wɔde san nya no di dwuma a, sika kotoku betumi ayɛ nsafe a wɔde bɛyɛ address a wɔde tua sika ne sika kotoku akontaabu ahorow.
Keys a wɔayɛ no yɛ deterministic - input koro no ara ma output koro no ara ba bere nyinaa.
Wɔnya sika kotokuo aba no firi nkaeɛ kasasin a wɔde Key Derivation Function (KDF) di dwuma:
Wei ma wonya 64-byte (512-bit) aba.
Wɔakyekyɛ aba no mu abien a ɛyɛ baiti 32 nnidiso nnidiso:
Wɔde eyinom di dwuma wɔ Hierarchical Deterministic (HD) Walets mu ma mmofra safoa a wonya fi mu.
Wɔ Zcash mu no, wobetumi de tumi a wɔhwɛ anaa ** tumi a wɔde di dwuma** ahyɛ obi nsa wɔ ahofadi mu ama nnua nketewa a wɔrensɛe aba wura no.
ZIP-32 kyerɛkyerɛ hierarchical deterministic key generation gyinapɛn a wɔayɛ ama Zcash kokoam nsɛm no mu.
Efi Expanded Spending Key mu na yenya:
Derivation akwan horow ma abɔnten address ahorow a ɛfata sɛ wɔde ma wɔn a wɔde nneɛma mena wɔ shielded pools (Sapling & Orchard) so.
Zcash nso boa address a ɛwɔ mu ma sika kotokuo dwumadie te sɛ Auto-Shielding.
Mfitiaseɛ Nhama a ZecHub (@ZecHub) kyerɛwee https://x.com/ZecHub/status/1624125037945946145
Wɔboaboaa krataafa yi ano fii mfitiase Zero to Zero Knowledge thread no mu maa ZecHub wiki.