bip39_dart

Description:

bip39 dart

BIP39 #
Dart implementation of Bitcoin BIP39: Mnemonic code for generating deterministic keys
Convert from bitcoinjs/bip39
Reminder for developers #
Please remember to allow recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist)
When a checksum is invalid, warn the user that the phrase is not something generated by your app, and ask if they would like to use it anyway. This way, your app only needs to hold the wordlists for your supported languages, but you can recover phrases made by other apps in other languages.
However, there should be other checks in place, such as checking to make sure the user is inputting 12 words or more separated by a space.
Examples #
// Generate a random mnemonic (uses crypto.randomBytes under the hood), defaults to 128-bits of entropy
var mnemonic = bip39_dart.generateMnemonic()
// => 'seed sock milk update focus rotate barely fade car face mechanic mercy'

bip39_dart.mnemonicToSeedHex('basket actual')
// => String '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f'

bip39_dart.mnemonicToSeed('basket actual')
// => Uint8List [92, 242, 212, 168, 176, 53, 94, 144, 41, 91, 223, 197, 101, 160, 34, 164, 9, 175, 6, 61, 83, 101, 187, 87, 191, 116, 217, 82, 143, 73, 75, 250, 68, 0, 245, 61, 131, 73, 184, 15, 218, 228, 64, 130, 215, 249, 84, 30, 29, 186, 43, 0, 59, 207, 236, 157, 13, 83, 120, 28, 166, 118, 101, 31]

bip39_dart.validateMnemonic(mnemonic)
// => true

bip39_dart.validateMnemonic('basket actual')
// => false
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import 'package:bip39_dart/bip39_dart.dart' as bip39;

main() {
// Only support BIP39 English word list
// uses HEX strings for entropy
String randomMnemonic = await bip39_dart.generateMnemonic();

String seed = bip39_dart.mnemonicToSeedHex("update elbow source spin squeeze horror world become oak assist bomb nuclear");
// => '77e6a9b1236d6b53eaa64e2727b5808a55ce09eb899e1938ed55ef5d4f8153170a2c8f4674eb94ce58be7b75922e48e6e56582d806253bd3d72f4b3d896738a4'

String mnemonic = await bip39_dart.entropyToMnemonic('00000000000000000000000000000000');
// => 'abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about'

bool isValid = await bip39_dart.validateMnemonic(mnemonic);
// => true

isValid = await bip39_dart.validateMnemonic('basket actual');
// => false

String entropy = bip39_dart.mnemonicToEntropy(mnemonic)
// => String '00000000000000000000000000000000'
}
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