Merge branch 'develop' into sg721-updatable-integration

utils/hash.ts

@@ -1,5 +1,6 @@
 /* eslint-disable eslint-comments/disable-enable-pair */
 
+import * as crypto from 'crypto'
 import { Word32Array } from 'jscrypto'
 import { SHA256 } from 'jscrypto/SHA256'
 import * as secp256k1 from 'secp256k1'
@@ -23,3 +24,21 @@ export function generateSignature(id: number, owner: string, privateKey: string)
     return ''
   }
 }
+
+export function generateKeyPairs(amount: number) {
+  const keyPairs: { publicKey: string; privateKey: string }[] = []
+  for (let i = 0; i < amount; i++) {
+    let privKey: Buffer
+    do {
+      privKey = crypto.randomBytes(32)
+    } while (!secp256k1.privateKeyVerify(privKey))
+
+    const privateKey = privKey.toString('hex')
+    const publicKey = Buffer.from(secp256k1.publicKeyCreate(privKey)).toString('hex')
+    keyPairs.push({
+      publicKey,
+      privateKey,
+    })
+  }
+  return keyPairs
+}