---
title: "RedDSA: which blockchains use it"
url: "https://hardyindex.com/algorithms/reddsa"
---

# RedDSA

A re-randomisable Schnorr-style signature scheme specified for Zcash, instantiated as RedJubjub and RedPallas, which authorises spends in the shielded pools. Broken by Shor's algorithm on a cryptographically relevant quantum computer, which recovers the private key from the public key.

- **Quantum status:** Broken by Shor's algorithm on a cryptographically relevant quantum computer.
- **Standard:** No published standard.
- **Family:** elliptic curve.
- **Also known as:** RedPallas, RedJubjub.

## Rated chains using it

- [Dash](https://hardyindex.com/chains/dash.md): account signatures, mainnet, opt-in, RedPallas. Spend authorisation in Dash Platform's shielded pool, which credits enter by choice. Platform 4.0 introduced the pool; its mainnet activation in July 2026 is reported in secondary sources and was not read from the chain. Source (source code or release): https://github.com/dashpay/platform/releases/tag/v4.0.0
- [Zcash](https://hardyindex.com/chains/zcash.md): account signatures, mainnet, default, RedJubjub and RedPallas. Spend authorisation. Source (specification or proposal): https://zips.z.cash/protocol/protocol.pdf

## Sources

- [Zcash Protocol Specification](https://zips.z.cash/protocol/protocol.pdf), Zcash. Accessed 19 October 2026.