https://github.com/cedarmist/sapphire-erc7212

ERC-7212 for Oasis Sapphire
https://github.com/cedarmist/sapphire-erc7212

Last synced: 20 days ago
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ERC-7212 for Oasis Sapphire

• Host: GitHub
• URL: https://github.com/cedarmist/sapphire-erc7212
• Owner: CedarMist
• License: mit
• Created: 2024-05-11T00:52:49.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-05-11T01:10:47.000Z (6 months ago)
• Last Synced: 2024-05-11T02:26:00.802Z (6 months ago)
• Language: TypeScript
• Size: 80.1 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ERC-7212 for Oasis Sapphire

Oasis Sapphire provides built-in support for secp256r1 via a precompile, however

the precompile isn't directly compatible with the 7212 precompile as internally

it uses DER encoded signatures and points.

The `P256Verifier` contract implemented in this repository provides a small

compatibility layer, translating 7212 calls to use the Sapphire secp256r1

precompile.

It is tested against the [Wycheproof] vectors.

[Wycheproof]: https://github.com/google/wycheproof

## References

 * https://github.com/daimo-eth/p256-verifier

 * https://daimo.com/blog/p256verifier

 * https://eips.ethereum.org/EIPS/eip-7212