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Added code to getBrainKeyFromBytes

master
Javier 2016-12-01 16:53:03 -04:00
parent bfae4ddd55
commit a98df1369f
1 changed files with 38 additions and 7 deletions
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45
src/main/java/com/luminiasoft/bitshares/FileBin.java
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@ -43,7 +43,32 @@ public abstract class FileBin {
* incorrect
*/
public static String getBrainkeyFromByte(byte[] input, String password) {
try {
byte[] publicKey = new byte[34];
byte[] rawData = new byte[input.length-34];
System.arraycopy(input, 0, publicKey, 0, publicKey.length);
System.arraycopy(input, 34, rawData, 0, rawData.length);
MessageDigest md = MessageDigest.getInstance("SHA-256");
ECKey randomECKey = ECKey.fromPublicOnly(publicKey);
byte[] finalKey = randomECKey.getPubKeyPoint().multiply(ECKey.fromPrivate(md.digest(password.getBytes("UTF-8"))).getPrivKey()).normalize().getXCoord().getEncoded();
rawData = decryptAES(rawData, byteToString(finalKey).getBytes());
byte[] checksum = new byte[4];
System.arraycopy(rawData, 0, checksum, 0, 4);
byte[] compressedData = new byte[rawData.length-4];
System.arraycopy(rawData, 4, compressedData, 0, compressedData.length);
byte[] wallet_object_bytes = Util.decompress(compressedData);
String wallet_string = byteToString(wallet_object_bytes);
return wallet_string;
//JsonObject wallet = new JsonParser().parse(wallet_string).getAsJsonObject();
} catch (UnsupportedEncodingException | NoSuchAlgorithmException ex){
}
//Creates cypher AES with password
//Uncrypt
return null;
@ -133,7 +158,7 @@ public abstract class FileBin {
return null;
}
private static byte[] encryptAES(byte[] input, byte[] key) {
private static byte[] encryptAES(byte[] input, byte[] key) {
try {
MessageDigest md = MessageDigest.getInstance("SHA-512");
byte[] result = md.digest(key);
@ -172,12 +197,18 @@ public abstract class FileBin {
cipher.doFinal(out, proc);
//Unpadding
byte[] temp = new byte[input.length + (16 - (input.length % 16))];
System.arraycopy(input, 0, temp, 0, input.length);
Arrays.fill(temp, input.length, temp.length, (byte) (16 - (input.length % 16)));
temp = new byte[out.length - 16];
System.arraycopy(out, 0, temp, 0, temp.length);
return temp;
int count = out[out.length-1];
byte[] temp = new byte[count];
System.arraycopy(out, out.length-count, temp, 0, temp.length);
byte[] temp2 = new byte[count];
Arrays.fill(temp2, (byte)count);
if (Arrays.equals(temp, temp2)){
temp = new byte[out.length-count];
System.arraycopy(out, 0, temp, 0, out.length-count);
return temp;
} else {
return out;
}
} catch (NoSuchAlgorithmException | DataLengthException | IllegalStateException | InvalidCipherTextException ex) {
}
return null;