Does RIPEMD-320 offer more security than RIPEMD-160?

No. RIPEMD-320 is explicitly described by its own designers as an extended-output variant of RIPEMD-160, intended for applications that want a longer digest without needing a higher security level. Its collision resistance is comparable to RIPEMD-160's, not to a hash actually designed for 320-bit-class security.

How is RIPEMD-320 built from RIPEMD-160?

It runs the same two parallel 80-round computation lines as RIPEMD-160, but starts each line with its own distinct set of five initial values (ten total, instead of five shared ones) and swaps one chaining variable between the two lines after each of five rounds, rather than fully combining the two lines only at the very end. The result is a 320-bit output built from ten running chaining variables instead of RIPEMD-160's five.

When would someone actually choose RIPEMD-320 over RIPEMD-160?

Mainly when a system just needs a longer output length for format or storage reasons (a wider fixed field, or a lower accidental-collision rate on very large datasets), without actually requiring stronger cryptographic guarantees. If real higher-security hashing is the goal, a hash designed for that security level, like SHA-256 or BLAKE3, is the more appropriate choice.

Does this tool send my text to a server?

No. RIPEMD-320 is computed entirely client-side using a pure JavaScript implementation of the algorithm's published specification, so nothing you type here is transmitted anywhere.

RipeMD320 Hash Calculator - Calculate RIPEMD-320 Checksum Online

Overview

Introduction

RIPEMD-320 extends RIPEMD-160, the hash best known for its role in Bitcoin address generation, to a 320-bit output, explicitly for applications that want a longer digest without needing a stronger security guarantee.

This tool computes RIPEMD-320's 320-bit digest of any text you provide, entirely in your browser, useful for reproducing a known value or comparing it against its shorter sibling.

What Is RipeMD320 Hash Calculator?

RIPEMD-320 is a cryptographic hash function from the same RIPEMD family as RIPEMD-160, producing a 320-bit digest shown here as 80 hexadecimal characters.

It runs RIPEMD-160's same two-line, 80-round-per-line structure, but starts each line from its own independent set of five initial values and periodically swaps a chaining variable between the two lines, yielding ten running 32-bit words (320 bits total) instead of five combined into 160 bits.

How RipeMD320 Hash Calculator Works

Input text is UTF-8 encoded and padded exactly as MD4 does (a 0x80 byte, zero padding, then a 64-bit little-endian bit-length), then processed in 64-byte blocks.

Each block runs through two parallel 80-round lines, swapping one chaining variable between lines after rounds 16, 32, 48, 64, and 80; the ten resulting 32-bit words are added into the ten running chaining variables that form the 320-bit digest.

When To Use RipeMD320 Hash Calculator

Use RIPEMD-320 when you need to reproduce or match a value from a system that specifically uses it, typically for a longer fixed-width digest field rather than for stronger security.

If you actually need higher-security-class collision resistance, use a hash designed for that purpose, like SHA-256 or BLAKE3, rather than RIPEMD-320's extended-but-not-strengthened construction.

Often used alongside RIPEMD-160 Hash Calculator and RipeMD256 Hash Calculator.

Features

Advantages

Longer 80-character output than RIPEMD-160, useful where a wider fixed field or lower accidental-collision rate on large datasets is the goal.
Shares RIPEMD-160's dual-line structural redundancy, which has held up better than single-line designs of the same era like MD5 or SHA-1.
Fast to compute, comparable in speed to its sibling RIPEMD-160.

Limitations

Does not provide stronger security than RIPEMD-160 despite the longer output, by the original designers' own description.
Far less commonly implemented and tested than SHA-2, SHA-3, or even plain RIPEMD-160.
Easy to mistake for a stronger option than RIPEMD-160 purely because of its longer output length.

Examples

Hashing the RIPEMD test string "abc"

Input

abc

Output

de4c01b3054f8930a79d09ae738e92301e5a17085beffdc1b8d116713e74f82fa942d64cdbc4682d

This exact value appears in the original RIPEMD-320 authors' own published test vectors.

Hashing a short greeting

Input

Hello, world!

Output

38e0636b7efa3c6c3cce53a334f4ff12cfee2a9704cdf9c2e7d0fe0399cf6ee66a71babb49f5870d

13 bytes of UTF-8 text produce the standard 80-character RIPEMD-320 hex digest.

Best Practices & Notes

Best Practices

Don't choose RIPEMD-320 over RIPEMD-160 expecting stronger security; use it only for the longer output length itself, matching a system that already requires it.
If real higher-security-class hashing is the actual goal, use SHA-256 or BLAKE3 instead.
For new designs without a specific legacy requirement, prefer a modern, widely-vetted hash over any RIPEMD variant.

Developer Notes

This tool implements RIPEMD-320 by hand in TypeScript following the original authors' published pseudo-code (RIPEMD-160's two-line structure extended with ten independent initial values and periodic chaining-variable swaps), since it isn't included in @noble/hashes or most modern hash libraries. It's verified against every test vector published on the original RIPEMD reference page, including the empty string, single characters, and multi-block inputs.

RipeMD320 Hash Calculator Use Cases

Verifying a legacy value from a system that specifically uses RIPEMD-320 for a longer digest field
Reproducing a known RIPEMD-320 test vector while debugging another implementation
Comparing RIPEMD-320 against RIPEMD-160 on identical input to see how the extended construction changes the result
Working with older cryptographic tooling that offered RIPEMD-320 as a digest option

Common Mistakes

Assuming RIPEMD-320's longer output means stronger security than RIPEMD-160; the designers explicitly describe it as extended output only, not extended strength.
Confusing RIPEMD-320's role with RIPEMD-160's specific Bitcoin address-generation use; RIPEMD-320 is not part of that derivation.
Choosing RIPEMD-320 for a brand-new design that actually needs a higher security class than RIPEMD-160 provides.

Tips

Use the RIPEMD-160 tool alongside this one to see how the extended ten-variable construction changes output length without changing the underlying security level.
If you're trying to reproduce a Bitcoin-style address derivation, you want the plain RIPEMD-160 tool, not this one.

RipeMD320 Hash Calculator