org.brewchain.sdk.util.CryptoUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of cwvj Show documentation

Java sdk for Dapps interact with cwv blockchain node

There is a newer version: 2.2.1

package org.brewchain.sdk.util;


import org.brewchain.core.crypto.JavaEncImpl;
import org.brewchain.core.crypto.cwv.util.BytesHelper;
import org.brewchain.core.crypto.model.KeyPairs;

import java.math.BigDecimal;
import java.math.BigInteger;

public class CryptoUtil {


    public static JavaEncImpl crypto;

    static {
        crypto = new JavaEncImpl();
    }

    /**
     * 可兼容以"0x"开头的16进制字符串的转换
     */
    public static byte[] hexStrToBytes(String hexStr){
//        return crypto.hexDec(hexStr);
        return BytesHelper.hexStringToBytes(hexStr);
    }

    public static String bytesToHexStr(byte[] bytes){
//        return crypto.hexEnc(bytes);
        return BytesHelper.toHexString(bytes);
    }

    public static String hexEncodeWithPrefix(byte[] bytes){
//        return crypto.hexEnc(bytes);
        return "0x"+BytesHelper.toHexString(bytes);
    }

    public static byte[] sha3(byte[] contentBytes){
        return crypto.sha3Encode(contentBytes);
    }

    public static KeyPairs privatekeyToAccountKey(byte[] pkBytes){
        return crypto.priKeyToKey(crypto.hexEnc(pkBytes));
    }
    public static KeyPairs privatekeyToAccountKey(String pk){
        return crypto.priKeyToKey(pk);
    }

    public static byte[] sign(String privateKey,byte[] contentBytes){
        return crypto.ecSign(privateKey,contentBytes);
    }
    public static String signHex(String privateKey,byte[] contentBytes){
        return bytesToHexStr(crypto.ecSign(privateKey,contentBytes));
    }

    public static boolean verifySign(String pubKey,byte[] cont,String sign){
        return crypto.ecVerify(pubKey,cont,hexStrToBytes(sign));
    }

    public static String privateKeyToAddress(byte[] pkBytes){
        return crypto.priKeyToKey(crypto.hexEnc(pkBytes)).getAddress();
    }

    public static String privateKeyToPublicKey(byte[] pkBytes){
        return crypto.priKeyToKey(crypto.hexEnc(pkBytes)).getPubkey();
    }

    public static KeyPairs getRandomKP(){
        return crypto.getRandomKP();
    }


    public static String add0X(String s) {
        if (s == null)
            return null;
        return s.startsWith("0x") ? s : "0x" + s;
    }

    public static String del0X(String s) {
        if (s == null)
            return null;
        return s.startsWith("0x") ? s.substring(2) : s;
    }


}