return empty;
    }
    try {
      return fromEntryArrayCheckingBucketOverflow(n, entryArray, throwIfDuplicateKeys);
    } catch (BucketOverflowException e) {
      // probable hash flooding attack, fall back to j.u.HM based implementation and use its
      // implementation of hash flooding protection
      return JdkBackedImmutableMap.create(n, entryArray, throwIfDuplicateKeys);
    }
  }

if len(key) > blocksize { // If key is too big, hash it. hm.outer.Write(key) key = hm.outer.Sum(nil) } copy(hm.ipad, key) copy(hm.opad, key) for i := range hm.ipad { hm.ipad[i] ^= 0x36 } for i := range hm.opad { hm.opad[i] ^= 0x5c } hm.inner.Write(hm.ipad) return hm } // MarkAsUsedInKDF records that this HMAC instance is used as part of a KDF. func MarkAsUsedInKDF(h *HMAC) { h.forHKDF = true } golang.org/fips140@v1.26.0/fips140/v1.26.0/indicator.go // Copyright 2024 The Go Authors. All rights reserved....