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path: root/accounts/key_store_passphrase_test.go
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// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package accounts

import (
    "io/ioutil"
    "testing"

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

const (
    veryLightScryptN = 2
    veryLightScryptP = 1
)

// Tests that a json key file can be decrypted and encrypted in multiple rounds.
func TestKeyEncryptDecrypt(t *testing.T) {
    keyjson, err := ioutil.ReadFile("testdata/very-light-scrypt.json")
    if err != nil {
        t.Fatal(err)
    }
    password := ""
    address := common.HexToAddress("45dea0fb0bba44f4fcf290bba71fd57d7117cbb8")

    // Do a few rounds of decryption and encryption
    for i := 0; i < 3; i++ {
        // Try a bad password first
        if _, err := DecryptKey(keyjson, password+"bad"); err == nil {
            t.Errorf("test %d: json key decrypted with bad password", i)
        }
        // Decrypt with the correct password
        key, err := DecryptKey(keyjson, password)
        if err != nil {
            t.Errorf("test %d: json key failed to decrypt: %v", i, err)
        }
        if key.Address != address {
            t.Errorf("test %d: key address mismatch: have %x, want %x", i, key.Address, address)
        }
        // Recrypt with a new password and start over
        password += "new data appended"
        if keyjson, err = EncryptKey(key, password, veryLightScryptN, veryLightScryptP); err != nil {
            t.Errorf("test %d: failed to recrypt key %v", i, err)
        }
    }
}