dshulyak

package main

import (
	"fmt"

	"github.com/ethereum/go-ethereum/rlp"
)

type Envelope struct {
	A uint

dshulyak

0x023a49052089693f23d92fbd0efc7d0fceedf72b

dshulyak

const crypto = require('crypto');

alice = crypto.createECDH('secp256k1')
alice.setPrivateKey('a3a8441a4b5040b438223eb3b273b7c8d3d219f418df2ab9da03c7350f5601a9', 'hex')

bob = Buffer.from([4, 202, 191, 42, 27, 135, 133, 122, 201, 194, 207, 107, 136, 190, 242, 52, 229, 224, 20, 254, 233, 138, 194, 101, 9, 202, 37, 122, 237, 103, 143, 62, 28, 204, 159, 213, 185, 168, 60, 253, 145, 112, 153, 7, 2, 154, 113, 137, 71, 231, 53, 146, 209, 203, 219, 219, 142, 22, 115, 192, 199, 3, 24, 217, 152, 144, 176, 254, 186, 178, 137, 31, 37, 168, 176, 34, 18, 252, 177, 60, 231, 185, 53, 7, 76, 133, 215, 149, 78, 204, 137, 113, 171, 193, 181, 232, 224, 70, 214, 141, 213, 188, 22, 223, 49, 250, 199, 181, 200, 49, 115, 26, 26, 109, 174, 78, 124, 88])

alice.computeSecret(bob.slice(0, 65))

dshulyak

const crypto = require('crypto');

alice = crypto.createECDH('secp256k1')
alice.setPrivateKey('ce9873239e8c1126c1bb92086ab22e3f7c519afd530315f9b5ef92323bbddee3', 'hex')

bob = Buffer.from([4, 202, 191, 42, 27, 135, 133, 122, 201, 194, 207, 107, 136, 190, 242, 52, 229, 224, 20, 254, 233, 138, 194, 101, 9, 202, 37, 122, 237, 103, 143, 62, 28, 204, 159, 213, 185, 168, 60, 253, 145, 112, 153, 7, 2, 154, 113, 137, 71, 231, 53, 146, 209, 203, 219, 219, 142, 22, 115, 192, 199, 3, 24, 217, 152, 144, 176, 254, 186, 178, 137, 31, 37, 168, 176, 34, 18, 252, 177, 60, 231, 185, 53, 7, 76, 133, 215, 149, 78, 204, 137, 113, 171, 193, 181, 232, 224, 70, 214, 141, 213, 188, 22, 223, 49, 250, 199, 181, 200, 49, 115, 26, 26, 109, 174, 78, 124, 88])

alice.computeSecret(bob.slice(0, 65))

dshulyak

package main

import (
	"crypto/elliptic"
	"crypto/rand"
	"fmt"

	"github.com/ethereum/go-ethereum/common/hexutil"
	"github.com/ethereum/go-ethereum/crypto"
	"github.com/ethereum/go-ethereum/crypto/ecies"

dshulyak

package main

import (
	"bytes"
	"crypto/rand"
	"fmt"

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

dshulyak

pragma solidity ^0.4.21;

contract TestHash {

    bytes32 public result;

    constructor() public {}

    function generate(bytes input) public {
        result = keccak256(input);

dshulyak

package main

import (
	"bytes"
	"crypto/rand"
	"math/big"
	"strings"

	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/common"

dshulyak

package main

import (
	"bytes"
	"crypto/ecdsa"
	"fmt"
	"math/rand"
	"net"
	"time"

dshulyak

2069  sudo sysctl -w net.ipv4.neigh.default.gc_thresh1=1024
 2071  sudo sysctl -w net.ipv4.neigh.default.gc_thresh2=4096
 2072  sudo sysctl -w net.ipv4.neigh.default.gc_thresh3=8192