precompiledContracts

Documentation

Overview

* Copyright 2020 The SealEVM Authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License.

Index

• Constants
• Variables
• func F(h *[8]uint64, m [16]uint64, c [2]uint64, f bool, rounds uint32)
• func IsPrecompiledContract(address *evmutils.Int) bool
• type PrecompiledContract

Constants

const ContractsMaxAddress = 16

Variables

var Contracts = [ContractsMaxAddress]PrecompiledContract{
	1:  &ecRecover{},
	2:  &sha256hash{},
	3:  &ripemd160hash{},
	4:  &dataCopy{},
	5:  &bigModExp{},
	6:  &bn256AddIstanbul{},
	7:  &bn256ScalarMulIstanbul{},
	8:  &bn256PairingIstanbul{},
	9:  &blake2F{},
	10: &senderOrgId{},
	11: &senderRole{},
	12: &senderPk{},
	13: &creatorOrgId{},
	14: &creatorRole{},
	15: &creatorPk{},
}

var IV = [8]uint64{
	0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
	0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179,
}

IV is an initialization vector for BLAKE2b

var (
	// S256 is the secp256k1 elliptic curve
	S256 = btcec.S256()
)

Functions

func F

func F(h *[8]uint64, m [16]uint64, c [2]uint64, f bool, rounds uint32)

F is a compression function for BLAKE2b. It takes as an argument the state vector `h`, message block vector `m`, offset counter `t`, final block indicator flag `f`, and number of rounds `rounds`. The state vector provided as the first parameter is modified by the function.

func IsPrecompiledContract

func IsPrecompiledContract(address *evmutils.Int) bool

Types

type PrecompiledContract

type PrecompiledContract interface {
	//SetValue(v string)
	GasCost(input []byte) uint64
	Execute(input []byte, version uint32) ([]byte, error)
}