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src/util/newFullHash.js

@@ -1,5 +1,24 @@
-import { randomBytes } from 'node:crypto';
+import { createHash, randomBytes } from 'node:crypto';
 
-export default function newFullHash() {
-  return randomBytes(32).toString('hex');
+const CHARSET = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+
+export function toBase62(buffer) {
+  let num = BigInt('0x' + buffer.toString('hex'));
+  if (num === 0n) return CHARSET[0].repeat(8);
+  let res = '';
+  while (num > 0n) {
+    res = CHARSET[Number(num % 62n)] + res;
+    num /= 62n;
+  }
+  return res;
 }
+
+export default function newFullHash(buffer) {
+  if (buffer) {
+    const digest = createHash('sha256').update(buffer).digest();
+    return toBase62(digest).slice(0, 8);
+  }
+  const bytes = randomBytes(16);
+  return toBase62(bytes).slice(0, 8);
+}
+