add toEIP55, checkPersionalSign

dist/utils/chain.util.d.cts

@@ -33,5 +33,7 @@ declare const sign: ({ user, token, amount, saltNonce, }: {
     saltNonce: string;
     signature: string;
 }>;
+declare function toEIP55(address: string): string;
+declare function checkPersionalSign(message: string, address: string, signature: string): boolean;
 
-export { buildLoginSignMsg, formatAddress, recoverTypedSignatureV4, sign };
+export { buildLoginSignMsg, checkPersionalSign, formatAddress, recoverTypedSignatureV4, sign, toEIP55 };

dist/utils/chain.util.d.ts

@@ -33,5 +33,7 @@ declare const sign: ({ user, token, amount, saltNonce, }: {
     saltNonce: string;
     signature: string;
 }>;
+declare function toEIP55(address: string): string;
+declare function checkPersionalSign(message: string, address: string, signature: string): boolean;
 
-export { buildLoginSignMsg, formatAddress, recoverTypedSignatureV4, sign };
+export { buildLoginSignMsg, checkPersionalSign, formatAddress, recoverTypedSignatureV4, sign, toEIP55 };

src/utils/chain.util.ts

@@ -1,5 +1,8 @@
 import { recoverTypedSignature, SignTypedDataVersion } from '@metamask/eth-sig-util'
 import { soliditySha3, toWei } from 'web3-utils'
+import { bytesToHex } from '@noble/hashes/utils'
+import { keccak_256 } from '@noble/hashes/sha3'
+import { recoverPersonalSignature } from '@metamask/eth-sig-util'
 import Web3 from 'web3'
 
 export function recoverTypedSignatureV4(signObj: any, signature: string) {
@@ -72,3 +75,25 @@ export const sign = async ({
   signature = signature.replace(/00$/, '1b').replace(/01$/, '1c')
   return { token, amount: amountBn, startTime, saltNonce, signature }
 }
+
+export function toEIP55(address: string) {
+  const lowerAddress = `${address}`.toLowerCase().replace('0x', '')
+  var hash = bytesToHex(keccak_256(lowerAddress))
+  var ret = '0x'
+  for (var i = 0; i < lowerAddress.length; i++) {
+    if (parseInt(hash[i], 16) >= 8) {
+      ret += lowerAddress[i].toUpperCase()
+    } else {
+      ret += lowerAddress[i]
+    }
+  }
+  return ret
+}
+
+export function checkPersionalSign(message: string, address: string, signature: string) {
+  if (!signature.startsWith('0x')) {
+    signature = '0x' + signature
+  }
+  const recovered = recoverPersonalSignature({ data: message, signature })
+  return recovered === address
+}