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@emurgo/cardano-message-signing-asmjs-gc

v1.1.0

Published

This is a library that implements the [CIP-0008](https://github.com/cardano-foundation/CIPs/blob/master/CIP-0008/README.md) message signing spec for the Cardano blockchain.

Downloads

69

Vulnerabilities

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Links

Git

Maintainers

cryptotitancryptotitantwwu123twwu123lisicky_emurgolisicky_emurgostackchainstackchainvsubhumanvsubhuman

Keywords

Readme

Message Signing

This is a library that implements the CIP-0008 message signing spec for the Cardano blockchain.

The library is composed of structs for (de)serializing the CBOR defined in CIP-0008/COSE which lays at the core of the protocol, mostly defined in lib.rs, as well as many helper utilities for more specific cases useful to CIP-0008. These are mostly in builders.rs for building the CBOR structures specific to certain algorithms.

NPM packages

Building

It can be used from both rust or compiled to wasm as all public code works with wasm-bindgen via wasm-pack.

There are no rust crates/npm packages uploaded yet, but these will come in the future.

In the meantime to build a wasm package we can run one of

  • npm run rust:build-nodejs for nodejs targeted wasm
  • npm run rust:build-browser for browser targeted wasm
  • npm run asm:build for conversion for asm.js

and for use from rust simply use the lib that resides in /rust/.

Example Usage

It is important to read the CIP-0008 spec to properly understand how to use this library. As per CIP-0008/COSE, signing is done via constructing a SigStructure and then signing this with the proper keys. This can be simplified via the use of the COSESignBuilder (for multiparty signing) / COSESign1Builder (for single signer) builders. Encryption is not yet supported by this library but will be in the future. An example node.js (wasm option) project that signs a message with a Cardano address exists in the /example/ directory which has detailed comments describing each step.