Generate seed from mnemonic

[imerkle]

[rokanost]

I generate my seed with:

 let seedBuffer = bip39.mnemonicToSeed(MNEMONIC_PRIVATE_SEED);
 let seed = Buffer.from(seedBuffer).toString('hex');

However, in new version checkSeed() is failing. The length of my seed is 128 characters and maximum allowed for deriveSecretKey() is 64 :/

[marvinroger]

@rokanost what if you comment that line? https://github.com/marvinroger/nanocurrency-js/blob/a8d794af0242b0de64e0e7f3295a8f33106b217f/src/keys.ts#L41

If it's as simple as feeding the blake2b hash with a 128 chars seed instead of a 64 one, it would be easy to be compatible.

[rokanost]

I did comment it out and everything seems fine, but tx now fails on publish with “bad work”

[marvinroger]

Do you generate the work against the previous block hash? If this is the first block on the account chain, you have to use the account's public key.

[rokanost]

All good now, had a little bug in my code.

[marvinroger]

Alright, so it's a bit more complicated than that.

We can't generate a nano seed from a BIP39 mnemonic phrase. We can however derive private keys from the mnemonic phrase with the BIP39 derivation path 44'/165'/0', 0 being the account index.

See https://github.com/nanocurrency/nano-node/wiki/Mnemonic-Seed