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README.md
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| ## `P256Verifier` Solidity contract | |||
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| This repo implements a gas-efficient, audited P256 signature verifier. Verifying a signature costs about 330k gas. Pure function, no precomputation. | |||
| > **This is currently the only audited, open source P256 verifier contract.** It's not quite the lowest-gas verifier, but it's close. | |||
| > This implementation uses no `unsafe` or assembly to maximize simplicity and safety. | |||
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and half the lines of code of FCL
nalinbhardwaj
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May 19, 2024
README.md
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| The secp256r1 elliptic curve, aka P256, is used by high-quality consumer enclaves including Yubikey, Apple's Secure Enclave, the Android Keystore, and WebAuthn. P256 verification is especially useful for contract wallets, enabling hardware-based signing keys and smoother UX. | ||
| **The contract exists at a deterministic CREATE2 address. You can use it on any EVM chain.** The secp256r1 elliptic curve, aka P256, is used by security keys like Yubikey, Apple's Secure Enclave, the Android Keystore, and WebAuthn, aka passkeys. P256 verification enables hardware-based signing keys, smoother UX, and passkey backup. | ||
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| This implementation was inspired by [Renaud Dubois/Ledger's implementation](https://github.com/rdubois-crypto/FreshCryptoLib) and [blst](https://github.com/supranational/blst). |
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Thanks also to [RPGF](https://x.com/daimo_eth/status/1745555616570212535) for supporting the project.
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