status-im/status-go

// Copyright 2019 The Waku Library Authors.
//
// The Waku library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The Waku library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty off
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the Waku library. If not, see <http://www.gnu.org/licenses/>.
//
// This software uses the go-ethereum library, which is licensed
// under the GNU Lesser General Public Library, version 3 or any later.

package common

import (
    mrand "math/rand"
    "testing"
    "time"

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

func TestPoWCalculationsWithNoLeadingZeros(t *testing.T) {
    e := Envelope{
        TTL:   1,
        Data:  []byte{0xde, 0xad, 0xbe, 0xef},
        Nonce: 100000,
    }

    e.CalculatePoW(0)

    if e.pow != 0.07692307692307693 {
        t.Fatalf("invalid PoW calculation. Expected 0.07692307692307693, got %v", e.pow)
    }
}

func TestPoWCalculationsWith8LeadingZeros(t *testing.T) {
    e := Envelope{
        TTL:   1,
        Data:  []byte{0xde, 0xad, 0xbe, 0xef},
        Nonce: 276,
    }
    e.CalculatePoW(0)

    if e.pow != 19.692307692307693 {
        t.Fatalf("invalid PoW calculation. Expected 19.692307692307693, got %v", e.pow)
    }
}

func TestEnvelopeOpenAcceptsOnlyOneKeyTypeInFilter(t *testing.T) {
    symKey := make([]byte, AESKeyLength)
    mrand.Read(symKey) //nolint: gosec

    asymKey, err := crypto.GenerateKey()
    if err != nil {
        t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
    }

    params := MessageParams{
        PoW:      0.01,
        WorkTime: 1,
        TTL:      uint32(mrand.Intn(1024)), // nolint: gosec
        Payload:  make([]byte, 50),
        KeySym:   symKey,
        Dst:      nil,
    }

    mrand.Read(params.Payload) // nolint: gosec

    msg, err := NewSentMessage(&params)
    if err != nil {
        t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
    }

    e, err := msg.Wrap(&params, time.Now())
    if err != nil {
        t.Fatalf("Failed to Wrap the message in an envelope with seed %d: %s", seed, err)
    }

    f := Filter{KeySym: symKey, KeyAsym: asymKey}

    decrypted := e.Open(&f)
    if decrypted != nil {
        t.Fatalf("Managed to decrypt a message with an invalid filter, seed %d", seed)
    }
}