input-output-hk/cardano-crypto compiled to pure javascript using Emscripten
npm install cardano-crypto.jsCompiled 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.
`` javascript
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)
`
` javascript
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)
`
` javascript
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)
`
* Key derivation
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* Address encoding/decoding/validation
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* Cardano crypto primitives
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* base58
* Daedalus paper wallets (27-word mnemonics)
* We encourage you to take a look
to see how the functions above should be used.Development
* Install emscripten, recommended version is 1.38.8
* run
npm install
* run Emscripten build example
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
known issues
When trying to compile the library with emscripten 1.38.41, the
function slows down significantly. With the 1.38.8 version it runs significantly faster.tests
* run
npm run testRemoving wordlists from webpack/browserify
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.
bash
$ 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
. Here is an example of excluding all non-English wordlists
`javascript
...
plugins: [
new webpack.IgnorePlugin(/^\.\/wordlists\/(?!english)/, /bip39\/src$/),
],
...
``