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EIP-7951 Precompile for secp256r1 Curve Support

FinalCorecreated 2025-05-272 later proposals build on it

Add precompiled contract for secp256r1 ECDSA signature verification with proper security checks

Authors: Carl Beekhuizen (@carlbeek), Ulaş Erdoğan (@ulerdogan), Doğan Alpaslan (@doganalpaslan)

Built on by (2)

Later proposals that name this one in their requires field.

EIP-7607Hardfork Meta - FusakaEIP-8030P256 algorithm support

What the specification covers

AbstractMotivationSpecificationPrecompileCurve ParametersFields and GroupsPoints and EncodingField Elements EncodingEncoding of Points in GPoint of Infinity EncodingEncoding of ScalarsBehavior on Invalid InputsABI for P256VERIFY OperationInputOutputInput ValidationSignature Verification AlgorithmError CasesGas ScheduleP256VERIFY operationGas Burning on ErrorRationaleSecurity FixesVerification vs RecoveryGas Cost JustificationBackwards CompatibilityInterface CompatibilityTest CasesReference ImplementationSecurity ConsiderationsCryptographic SecurityMalleabilitySide-Channel ResistanceCopyright

This proposal declares no Solidity interface, so there is nothing to compute. It may be a core protocol change, a meta proposal, or written in prose only.

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