• input-output-hk/cardano-crypto
• haskell-crypto/cryptonite
• grigorig/chachapoly

Compiled to pure javascript using Emscripten. This is a collection of cryptolibraries and functions useful for working with Cardano cryptocurrency, eliminating the need for many dependencies.

var lib = require('cardano-crypto.js')

var mnemonic = 'logic easily waste eager injury oval sentence wine bomb embrace gossip supreme'
var walletSecret = await lib.mnemonicToRootKeypair(mnemonic, 1)
var msg = new Buffer('hello there')
var sig = lib.sign(msg, walletSecret)

var lib = require('cardano-crypto.js')

var mnemonic = 'logic easily waste eager injury oval sentence wine bomb embrace gossip supreme'
var parentWalletSecret = lib.mnemonicToRootKeypair(mnemonic, 1)
var childWalletSecret = lib.derivePrivate(parentWalletSecret, 0x80000001, 1)

var lib = require('cardano-crypto.js')

var mnemonic = 'logic easily waste eager injury oval sentence wine bomb embrace gossip supreme'
var parentWalletSecret = lib.mnemonicToRootKeypair(mnemonic, 1)
var parentWalletPublicKey = parentWalletSecret.slice(64, 128)
var childWalletSecret = lib.derivePublic(parentWalletPublicKey, 1, 1)

• Buffer sign(Buffer msg, Buffer walletSecret)
• Bool verify(Buffer msg, Buffer publicKey, Buffer sig)

• async Buffer mnemonicToRootKeypair(String mnemonic, int derivationScheme)
• Buffer derivePrivate(Buffer parentKey, int index, int derivationScheme)
• Buffer derivePublic(Buffer parentExtPubKey, int index, int derivationScheme)
• Buffer toPublic(Buffer privateKey)

• Buffer packBootstrapAddress(Array[int] derivationPath, Buffer xpub, Buffer hdPassphrase, int derivationScheme, int protocolMagic)
• Buffer packBaseAddress(Buffer spendingKeyHash, Buffer stakingPubKey, int networkId)
• Buffer packPointerAddress(Buffer pubKeyHash, Object pointer, int networkId)
• Buffer packEnterpriseAddress(Buffer spendingKeyHash, int networkId)
• Buffer packRewardAddress(Buffer stakingKeyHash, int networkId)
• Object getAddressType(Buffer address)
• Object getShelleyAddressInfo(Buffer address)
• Object AddressTypes
• Buffer addressToBuffer(string address) // address can be either bech32 or base58 encoded
• Map getBootstrapAddressAttributes(Buffer address)
• Array<int>? getBootstrapAddressDerivationPath(Buffer address, Buffer hdPassphrase)
• int getBootstrapAddressProtocolMagic(Buffer address)
• Bool isValidBootstrapAddress(string address)
• Bool isValidShelleyAddress(string address)
• Buffer xpubToHdPassphrase(Buffer xpub)
• Buffer getPubKeyBlake2b224Hash(Buffer pubKey)

• Buffer blake2b(Buffer input, outputLen)
• Buffer cardanoMemoryCombine(Buffer input, String password)
• string bech32.encode(string prefix, Buffer data)
• Object bech32.decode(string address)
• [base58](https://www.npmjs.com/package/base58)
• [scrypt](https://www.npmjs.com/package/scrypt-async)

• Buffer decodePaperWalletMnemonic(string paperWalletMnemonic)

We encourage you to take a look at test/index.js to see how the functions above should be used.

• Install emscripten, recommended version is 1.38.8
• run npm install
• run npm run build

git clone https://github.com/emscripten-core/emsdk.git
cd emsdk
./emsdk install 1.39.19
./emsdk activate 1.39.19
source ./emsdk_env.sh
cd ../
git clone https://github.com/vacuumlabs/cardano-crypto.js
cd cardano-crypto.js
npm install
npm run build
shasum lib.js # should match shasum of published version of lib.js

When trying to compile the library with emscripten 1.38.41, the cardanoMemoryCombine function slows down significantly. With the 1.38.8 version it runs significantly faster.

• run npm run test

• bitcoinjs/bip39

Browserify/Webpack bundles can get very large if you include all the wordlists, so you can now exclude wordlists to make your bundle lighter.

For example, if we want to exclude all wordlists besides chinese_simplified, you could build using the browserify command below.

$ browserify -r bip39 -s bip39 \
 --exclude=./wordlists/english.json \
 --exclude=./wordlists/japanese.json \
 --exclude=./wordlists/spanish.json \
 --exclude=./wordlists/italian.json \
 --exclude=./wordlists/french.json \
 --exclude=./wordlists/korean.json \
 --exclude=./wordlists/chinese_traditional.json \
  > bip39.browser.js

This will create a bundle that only contains the chinese_simplified wordlist, and it will be the default wordlist for all calls without explicit wordlists.

You can also do this in Webpack using the IgnorePlugin. Here is an example of excluding all non-English wordlists

...
plugins: [
  new webpack.IgnorePlugin(/^\.\/wordlists\/(?!english)/, /bip39\/src$/),
],
...