8d141ac450
* Add findAll() to CRUD * Add getAddressInfo to Wallet API * Insert pubkey into bloomfilter also inserts hash In this commit we also simplify parts of BloomFilterTest, and move what used to be in BloomFilterSpec into BloomFilterTest. * Add bloom filter generation to wallet * Add bloom false positive rate to wallet config * Add logging to SQL errors * Fix a bug where HDPath.next returned the wrong path * Add FutureUtil.sequentially * Make bloom filter size calculation more explicit * Return Vector of pubkeys instead of Seq * Verbose handling of address fetching in test |
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| src/main/scala/org/bitcoins/wallet | ||
| README.md | ||
wallet
This is meant to be a stand alone project that can be used as a cold storage wallet and hot wallet.
Features
- utxo storage
- key storage
- key generation
- coin selection
- transaction building
- fee calculation
Design choices
- Private key material is just stored once, as the mnemonic code used to initialize the wallet
- Addresses we hand out to users are stored with their BIP44/BIP49/BIP84 paths and script types, so that everything we need for spending the money sent to an address is derivable.
Mnemonic encryption
The mnemonic seed to the Bitcoin-S wallet is written to disk, encrypted. The file name is
$HOME/.bitcoin-s/$NETWORK/encrypted_bitcoin-s_seed.json. We store it in a JSON object
that looks like this:
{
"iv": "initializationVector",
"cipherText": "encryptedCipherText",
"salt": "saltUsedInEncryption"
}
The parts that's relevant to this part of the wallet is WalletStorage.scala (where we handle
the actual reading from and writing to disk), EncryptedMnemonic.scala (where we convert an
encrypted mnemonic to a cleartext mnemonic) and AesCrypt.scala (where do the actual
encryption/decryption).
We use AES encryption for this, block cipher mode and PKCS5 padding. The wallet password is fed
into the PBKDF2 key stretching function, using SHA512 as the HMAC function. This happens in
PBKDF2.scala.