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# cashu
# cashu
**Cashu is a Chaumian Ecash wallet and mint with Bitcoin Lightning support.**
<a href="https://pypi.org/project/cashu/"><img alt="Release" src="https://img.shields.io/pypi/v/cashu?color=black"></a>
*Disclaimer: The author is NOT a cryptographer and this work has not been reviewed. This means that there is very likely a fatal flaw somewhere. Cashu is still experimental and not production-ready.*
Cashu is an Ecash implementation based on David Wagner's variant of Chaumian blinding. Token logic based on [minicash](https://github.com/phyro/minicash) ([description](https://gist.github.com/phyro/935badc682057f418842c72961cf096c)) which implements a [Blind Diffie-Hellman Key Exchange](https://cypherpunks.venona.com/date/1996/03/msg01848.html) scheme written down by Ruben Somsen [here](https://gist.github.com/RubenSomsen/be7a4760dd4596d06963d67baf140406). The database mechanics and the Lightning backend uses parts from [LNbits](https://github.com/lnbits/lnbits-legend).
<p align="center">
Quick links:
<a href="#cashu-client-protocol">Cashu client protocol</a> ·
<a href="#easy-install">Quick Install</a> ·
<a href="#hard-install-poetry">Manual install</a> ·
<a href="#configuration">Configuration</a> ·
<a href="#using-cashu">Using Cashu</a> ·
<a href="#running-a-mint">Run a mint</a>
<br><br>
</p>
## Cashu client protocol