Fix genKeyPair() generates not-fully-256bits private key

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+dist

README.md

@@ -1,79 +1,19 @@
-# sm.js
+# sm-series-crypto
 
 SM series cryptography in javascript implementation.
 
-SM2 signature and SM3 hash are implemented.
+SM2 signature, encrypt/decrypt, SM3 hash, SM4 encrypt/decrypted are implemented.
 
-## install
+Reference repos:
 
-`sm.js` is available in npm.
+[https://github.com/AlverLyu/sm.js](https://github.com/AlverLyu/sm.js)
 
-```sh
-npm install sm.js
-```
-
-## Usage 
-
-### SM2 key pair
-
-Generate a key pair
-
-```js
-var sm2 = require('sm.js').sm2;
-
-var key = sm2.genKeyPair();
-```
-
-The public key can be converted to a string or a byte array, for storing or
-transmitting on network.
-
-```js
-var pubKeyString = key.pubToString();
-var pubKeyBytes = key.pubToBytes('compress');
-```
-
-Note that there are 3 conversion modes: compress, nocompress and mex.
-The default mode is nocompress.
-
-To parse the public key string/array, simply use the key pair constructor
-
-```
-var key = new sm2.SM2KeyPair(pubKeyString);
-```
+[https://github.com/JuneAndGreen/sm-crypto](https://github.com/JuneAndGreen/sm-crypto)
 
+[https://github.com/pecliu/gm-crypt](https://github.com/pecliu/gm-crypt)
 
-### SM2 signature
+**Currently code needs refactor because the codes are come from three repos，but the function of this repo is complete. I'm going to refactor it using Buffer.**
 
-The key pair can be used to sign message or verify the signature.
-
-```js
-var msg = 'abc';
-var signature = key.sign(msg);
-
-if (key.verify(msg, signature.r, signature.s)) {
-	console.log('PASS');
-}
-```
-
-Note that `key.pri` should not be null when signing, as well as `key.pub` for
-verifying.
-
-`sign` will combine the input message with extra infos(a constant ID, the curve
-parameters and the public key), and use SM3 as the hash algorithm. While there
-is a function pair `signRaw` and `verifyRaw` which do not use the extra infos.
-Also there is a function pair `signDigest` and `verifyDigest` use the message
-digest as the input, allowing for custom hashing.
-
-
-### SM3 hash algorithm
-
-The sm3 module is used to generate digest using SM3 hash algorithm.
-
-```js
-var sm3 = require('sm.js').sm3;
-
-var msg = 'abc';
-var hash = new sm3();
-var digest = hash.sum(msg);
-```
+## Usage 
 
+See tests for details.