Tiger Hash Generator
Turn any text into its Tiger hash — pick the length and pass count you need.
How to use the Tiger Hash Generator
- Type or paste your text in the box.
- Pick the variant from the dropdown — Tiger-192 with 3 passes is the standard choice.
- The Tiger hash appears as you type. Click Copy to grab the result.
About the Tiger Hash Generator
Tiger was designed by Ross Anderson and Eli Biham in 1995, and its distinguishing feature was a bet on the future of hardware. Where the hash functions of that era were tuned for the 32-bit machines everyone actually owned, Tiger was optimised for 64-bit processors — a design choice that looked slightly eccentric in 1995 and rather prescient a decade later. It produces 192 bits, written as 48 hexadecimal characters, in its full form.
Tiger is best known for a use its designers did not plan: peer-to-peer file sharing. Networks including Direct Connect and Gnutella adopted the Tiger tree hash (TTH), which hashes a file in small blocks, then hashes those hashes in pairs, and again, until a single root hash remains. The payoff is that you can verify each chunk as it arrives from an untrusted peer instead of downloading a whole file and discovering at the end that it was corrupt — and you can identify a file by its TTH root regardless of who is serving it. If you have ever seen a urn:tree:tiger: magnet link, that is Tiger.
The variants here vary in two ways. The number after the comma is the pass count: 3 passes is the standard Tiger, while 4 passes does more mixing for extra conservatism at some cost in speed. The number before it truncates the output to 128 or 160 bits — Tiger-128 and Tiger-160 are simply Tiger-192 cut short, so they share the first characters of the full digest rather than being different computations. Note also that Tiger has two byte-ordering conventions in the wild, so a digest from another tool may look reversed; that is a formatting difference, not a wrong answer. For new work outside a TTH context, SHA-256 is the safer default.
Frequently asked questions
Can I decrypt or reverse a Tiger hash?
No. Tiger is a one-way hash — the original text is not stored inside the output, so there is nothing to decrypt. The only way back is to guess an input and hash it to see whether it matches.
What is the difference between Tiger-128, Tiger-160 and Tiger-192?
Only the output length. Tiger computes 192 bits and the shorter variants are that same digest truncated to 128 or 160 bits, so they share the leading characters. Tiger-192 is the full hash.
Is this the same as a Tiger tree hash (TTH)?
No. This tool computes the plain Tiger hash of your text. A TTH root is built by hashing a file in blocks and then hashing those hashes together in a tree — it uses Tiger internally but is a different, multi-step calculation.
What do 3 passes and 4 passes mean?
The pass count is how many rounds of mixing Tiger performs. Three passes is the standard specification; four passes adds extra mixing for a conservatism margin and is slightly slower. They produce completely different hashes.
Is my text sent anywhere?
Your text is sent to our server to be hashed, because browsers cannot compute Tiger — they only expose the SHA family. It is hashed and immediately discarded, never logged and never stored.