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* fix error and add CacheDevController * add NFT claim query API
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src/main/java/com/dl/officialsite/common/utils/ECSignatureUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| package com.dl.officialsite.common.utils; | ||
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| import org.apache.commons.lang3.StringUtils; | ||
| import org.web3j.abi.TypeEncoder; | ||
| import org.web3j.abi.datatypes.Address; | ||
| import org.web3j.abi.datatypes.DynamicStruct; | ||
| import org.web3j.abi.datatypes.Uint; | ||
| import org.web3j.abi.datatypes.generated.Uint256; | ||
| import org.web3j.crypto.Credentials; | ||
| import org.web3j.crypto.Hash; | ||
| import org.web3j.crypto.Keys; | ||
| import org.web3j.crypto.Sign; | ||
| import org.web3j.utils.Numeric; | ||
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| import java.math.BigInteger; | ||
| import java.security.SecureRandom; | ||
| import java.security.SignatureException; | ||
|
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| public class ECSignatureUtil { | ||
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| private static final String MESSAGE_PREFIX = "\u0019Ethereum Signed Message:\n32"; | ||
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| public static String sign(Credentials credentials, String receiverAddress, BigInteger seed, BigInteger signedAt, | ||
| BigInteger chainId, String nftAddress) { | ||
| Sign.SignatureData signature = | ||
| Sign.signMessage( | ||
| toEthSignedMessageHash(sha3AbiEncodedData(receiverAddress, seed, signedAt, chainId, nftAddress)), | ||
| credentials.getEcKeyPair(), false); | ||
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| byte[] retVal = new byte[65]; | ||
| System.arraycopy(signature.getR(), 0, retVal, 0, 32); | ||
| System.arraycopy(signature.getS(), 0, retVal, 32, 32); | ||
| System.arraycopy(signature.getV(), 0, retVal, 64, 1); | ||
| return Numeric.toHexString(retVal); | ||
| } | ||
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| private static byte[] toEthSignedMessageHash(String sha3AbiEncodedData) { | ||
| byte[] prefixBytes = MESSAGE_PREFIX.getBytes(); | ||
| byte[] messageBytes = Numeric.hexStringToByteArray(sha3AbiEncodedData); | ||
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| byte[] msgBytes = new byte[MESSAGE_PREFIX.getBytes().length + messageBytes.length]; | ||
| System.arraycopy(prefixBytes, 0, msgBytes, 0, prefixBytes.length); | ||
| System.arraycopy(messageBytes, 0, msgBytes, prefixBytes.length, messageBytes.length); | ||
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| return Hash.sha3(msgBytes); | ||
| } | ||
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| public static BigInteger randomSeed() { | ||
| // Create a SecureRandom instance | ||
| SecureRandom random = new SecureRandom(); | ||
|
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| // Specify the bit length for the BigInteger | ||
| int bitLength = 128; // You can change this to any size you need | ||
|
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| // Generate a random BigInteger | ||
| return new BigInteger(bitLength, random); | ||
| } | ||
|
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| /** | ||
| * Sha3 == keccak256 | ||
| * | ||
| * @param receiverAddress | ||
| * @param seed | ||
| * @param signedAt | ||
| * @param chainId | ||
| * @param nftAddress | ||
| * @return | ||
| */ | ||
| private static String sha3AbiEncodedData(String receiverAddress, BigInteger seed, BigInteger signedAt, | ||
| BigInteger chainId, String nftAddress) { | ||
| return Hash.sha3(abiEncode(receiverAddress, seed, signedAt, chainId, nftAddress)); | ||
| } | ||
|
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| private static String abiEncode(String receiverAddress, BigInteger seed, BigInteger signedAt, | ||
| BigInteger chainId, String nftAddress) { | ||
| return TypeEncoder.encode(new DynamicStruct( | ||
| new Address(receiverAddress), | ||
| new Uint256(seed), | ||
| new Uint256(signedAt), | ||
| new Uint(chainId), | ||
| new Address(nftAddress) | ||
| )); | ||
| } | ||
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| public static boolean verifySignature(String signature, | ||
| String expectedAddress, | ||
| String receiverAddress, | ||
| BigInteger seed, | ||
| BigInteger signedAt, | ||
| BigInteger chainId, | ||
| String nftAddress) { | ||
| byte[] ethSignedMessageHash = toEthSignedMessageHash(sha3AbiEncodedData(receiverAddress, seed, signedAt, chainId, nftAddress)); | ||
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| String extractedAddress = recoverAddress(ethSignedMessageHash, signature); | ||
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| return StringUtils.equalsIgnoreCase(expectedAddress, extractedAddress); | ||
| } | ||
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| public static String recoverAddress(byte[] digest, String signature) { | ||
| if (signature.startsWith("0x")) { | ||
| signature = signature.substring(2); | ||
| } | ||
|
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| // No need to prepend these strings with 0x because | ||
| // Numeric.hexStringToByteArray() accepts both formats | ||
| String r = signature.substring(0, 64); | ||
| String s = signature.substring(64, 128); | ||
| String v = signature.substring(128, 130); | ||
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| BigInteger pubkey = null; | ||
| try { | ||
| pubkey = Sign.signedMessageHashToKey(digest, | ||
| new Sign.SignatureData( | ||
| Numeric.hexStringToByteArray(v)[0], | ||
| Numeric.hexStringToByteArray(r), | ||
| Numeric.hexStringToByteArray(s))); | ||
| } catch (SignatureException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
|
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| return "0x" + Keys.getAddress(pubkey); | ||
| } | ||
|
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| } |
58 changes: 0 additions & 58 deletions
58
src/main/java/com/dl/officialsite/common/utils/EcdsaRecoverUtil.java
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62 changes: 0 additions & 62 deletions
62
src/main/java/com/dl/officialsite/common/utils/SignatureGeneration.java
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776 changes: 776 additions & 0 deletions
776
src/main/java/com/dl/officialsite/nft/contract/WarCraftContract.java
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