NyzoSpace

Hierarchical Deterministic wallet for Nyzo Crypto currency.

JS Port.

Overview

• Generate any amount of keys from a single BIP39 mnemonic
• Convert any seed into a BIP39 mnemonic (paperCode) and back.
• Usual operations on keys, incl. derivation and several formats.
• conforms to SLIP-0010
• conforms to BIP44
• supports optional and empty password
• Relies on audited tweetnacl module for ed25519 crypto.
• Supports Nyzo Strings
• Provides error free QR codes for id__ and key_ nyzostrings. Key or id is humanly readable or QR code to avoid giving the wrong qr code.
• supports papercodes to share or give, import one single address without revealing the whole wallet to a third party app.
• supports skinable paper wallet

Auto build Github pages version: https://angainordev.github.io/NyzoSpace/js/dist/index.html

Derivation mechanism

Note: This implementation follows SLIP-0010 https://github.com/satoshilabs/slips/blob/master/slip-0010.md and BIP44

Legacy derivation

BIP 39 mnemonic (12 or more words, plus default pass “NYZO_ROCKS!”) => seed (512 bits, 64 bytes)

master seed = sha512Hmac(‘ed25519 seed’).digest(seed)

master seed (64 bytes) => left = seed, right = chainCode

Derivation path is m/x’

derived_seed = sha512Hmac(parent.chainCode).digest(0 + parent.seed + UINT32(index))

derived_seed (64 bytes) => left = seed, right = chainCode

seed (32 bytes) => privatekey (64 bytes)

privatekey (64 bytes) => publickey (32 bytes)

New derivation mechanism

BIP 39 mnemonic (12 or more words, plus empty or custom pass ) => seed (512 bits, 64 bytes)

Derivation path is m/44’/380’/x’

Compatibility is kept. Previously created wallets still can be rebuild the same way.

Paper codes

entropy (32 bytes) <=> BIP 39 mnemonic (24 words)

entropy (32 bytes) <=> seed (32 bytes)

Tests

See test directory for API and sample use.

Validated against from SLIP-0010 test vectors

https://github.com/satoshilabs/slips/blob/master/slip-0010.md

Changelog

• v1.3: Supports empty of different password, supports BIP44 derivation path, add matching ThreeDotTech test vectors.
• v1.2: Ship with bootstrap instead of cdn, new page for offline vote signing.
• v1 - Paper wallet templates can be selected
• v0.8 - 0.9: Add paper wallet generation
• v0.6: Uses NyzoStrings module to produce also seed and public id in the required format.
• v0.5: Matches SLIP-0010 test vectors
• v0.4: Doc and GUI work
• v0.3: Derivation
• v0.2: Move to tweetnacl
• V0.1: Init tests

Donation address

Donations will help us maintain and improve this tool and other ones

Nyzo public id:
id__87vo1ihVrKMFD4bSXHU2D4ZRQKzsZpqCAkP8_PML9Ljzru.zFwbi

77970524776adbe8-9842f4e6ad82984e-f3cad89bed86658d-4c48ff1bee26e4e2