从金刚sha3到坚固sha3

Question

试图将"golang.org/x/crypto/sha3“库与solidity sha3()匹配，这给我带来了困难。它已经在这里中讨论过了，但是我不知怎么不能把它应用到go中。我如何处理solidity.sha3(uint256(1))==golang.sha3.Sum256(convertMyBigInt(myBigInt))类型的big.Int类型？

我将bigInt转换成十六进制字节数组，然后用零填充左边的站点，散列，然后输出。

//create a big int for test and set to 1
b1 := new(big.Int)
b1.SetInt64(1)
//create empty array with 32 bytes for padding
empty := make([]byte,32)
//turn the big int into a hex string (let me know if there is a more 
      //elegant way^^)
String := bytes.NewBufferString(b1.Text(16))
copy(empty[len(empty)-len(String.Bytes()):],String.Bytes())
//output of empty : [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 49]
res:= new(big.Int)
temp:=sha3.Sum256(empty)
res.SetBytes(temp[:])   
fmt.Println("\nresult ",res.Text(16))

输出: 26502030f0954243c70cb7fa68e0752ce2bf99aabfc0219d5184635d4c61dbd8

坚实给了我：

sha3(uint(1))
b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6

有人能给我举个简单的例子吗?如何以优雅的方式将稳健的sha3与金刚sha3相匹配？我会非常感激的！

Answer 1

下面是一个关于从sha3生成稳固的uint256散列的完整示例：

package main

import (
    "fmt"
    "math/big"

    "github.com/ethereum/go-ethereum/accounts/abi"
    "github.com/ethereum/go-ethereum/crypto/sha3"
)

func main() {
    h := sha3.NewKeccak256()
    h.Write(abi.U256(big.NewInt(1)))
    hash := h.Sum(nil)
    fmt.Printf("%x", hash) // b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6
}

稳固性：

sha3(uint(1))
b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6

我已经使库前进-坚实-3能够轻松地将实体类型转换为Go中的实体sha3散列。下面是一个例子：

package main

import (
    "fmt"
    "math/big"

    solsha3 "github.com/miguelmota/go-solidity-sha3"
)

func main() {
    hash := solsha3.SoliditySHA3(
        solsha3.Uint256(big.NewInt(1)),
    )
    fmt.Printf("%x", hash) // b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6
}

一个更复杂的例子：

package main

import (
    "encoding/hex"
    "fmt"
    "math/big"

    "github.com/miguelmota/go-solidity-sha3"
)

func main() {
    hash := solsha3.SoliditySHA3(
        solsha3.Address("0x12459c951127e0c374ff9105dda097662a027093"),
        solsha3.Uint256(big.NewInt(100)),
        solsha3.String("foo"),
        solsha3.Bytes32("bar"),
        solsha3.Bool(true),
    )

    fmt.Println(hex.EncodeToString(hash)) // 417a4c44724701ba79bb363151dff48909bc058a2c75a81e9cf5208ae4699369
}