Algorithms
xxHash (XXH64)
XXH64 with an optional 64-bit seed. For hash tables and bloom filters and dedup and nothing secret
Hash / Non-cryptographic
xxHash (XXH64)
XXH64, for hash tables and nothing secret.
- Digest
- 64-bit · 8 bytes
- HMAC
- no key mode
- Security
- NOT for security: fast hash for hash tables
- Family
- 4 in non-cryptographic
2 options, 0 required
Sample
- hex
- 45ab6734b21e6968
- base64
- RatnNLIeaWg=
Options
Access
- Create
create("xxhash") - CLI
hashes xxhash 'hello world' - Tryplayground with the sample above
- Kincrc32, crc16-xmodem, fnv1a
XXH64, the 64-bit xxHash. Built for speed and good distribution in hash tables, bloom filters and dedup. Anyone can find collisions on purpose.
create("xxhash").hash("").digest; // "ef46db3751d8e999"
create("xxhash").hash("abc").digest; // "44bc2cf5ad770999"
create("xxhash").hash("abc", { seed: 1 }).digest; // "bea9ca8199328908"
The seed is an unsigned 64-bit integer. Past Number.MAX_SAFE_INTEGER, pass it as a bigint or a decimal string, so "18446744073709551615" works and nothing gets rounded. Checked against the reference xxhash on hundreds of inputs, after an earlier version of this package got it quietly wrong. That's the regression test's reason to exist.