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decrypt_test.go
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decrypt_test.go
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// Copyright © 2019-2021 Weald Technology Trading
// 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.
package keystorev4_test
import (
"encoding/json"
"runtime"
"sync"
"testing"
assert "github.com/stretchr/testify/assert"
require "github.com/stretchr/testify/require"
keystorev4 "github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4"
)
func TestDecrypt(t *testing.T) {
tests := []struct {
name string
input string
passphrase string
output []byte
err string
}{
{
name: "NoCipher",
input: `{"checksum":{"function":"SHA256","message":"cb27fe860c96f269f7838525ba8dce0886e0b7753caccc14162195bcdacbf49e","params":{}},"kdf":{"function":"scrypt","message":"","params":{"dklen":32,"n":262144,"p":8,"r":1,"salt":"ab0c7876052600dd703518d6fc3fe8984592145b591fc8fb5c6d43190334ba19"}}}`,
passphrase: "testpassword",
err: "no cipher",
},
{
name: "ShortPassphrase",
input: `{"checksum":{"function":"SHA256","message":"cb27fe860c96f269f7838525ba8dce0886e0b7753caccc14162195bcdacbf49e","params":{}},"cipher":{"function":"aes-128-ctr","message":"e18afad793ec8dc3263169c07add77515d9f301464a05508d7ecb42ced24ed3a","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}}}`,
passphrase: "testpassword",
err: "decryption key must be at least 32 bytes",
},
{
name: "BadSalt",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"hbd90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: "invalid KDF salt",
},
{
name: "BadPRF",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha128","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: `unsupported PBKDF2 PRF "hmac-sha128"`,
},
{
name: "BadKDF",
input: `{"checksum":{"sha256":"magic","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"magic","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: `unsupported KDF "magic"`,
},
{
name: "InvalidScryptParams",
input: `{"checksum":{"function":"SHA256","message":"cb27fe860c96f269f7838525ba8dce0886e0b7753caccc14162195bcdacbf49e","params":{}},"cipher":{"function":"aes-128-ctr","message":"e18afad793ec8dc3263169c07add77515d9f301464a05508d7ecb42ced24ed3a","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"scrypt","message":"","params":{"dklen":0,"n":3,"p":-4,"r":1,"salt":"ab0c7876052600dd703518d6fc3fe8984592145b591fc8fb5c6d43190334ba19"}}}`,
passphrase: "testpassword",
err: "invalid KDF parameters",
},
{
name: "BadCipherMessage",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"h12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: "invalid cipher message",
},
{
name: "BadChecksumMessage",
input: `{"checksum":{"function":"sha256","message":"hb9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: "invalid checksum message: encoding/hex: invalid byte: U+0068 'h'",
},
{
name: "InvalidChecksum",
input: `{"checksum":{"function":"sha256","message":"0ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: "invalid checksum",
},
{
name: "BadIV",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"h29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: "invalid IV: encoding/hex: invalid byte: U+0068 'h'",
},
{
name: "BadCipher",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-64-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: `unsupported cipher "aes-64-ctr"`,
},
{
name: "InvalidCipher",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"xor","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
err: `unsupported cipher "xor"`,
},
{
name: "Good",
input: `{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`,
passphrase: "testpassword",
output: []byte{0x11, 0xdd, 0xc, 0x87, 0xfe, 0xf7, 0x48, 0xdc, 0x7, 0xee, 0xb7, 0xe, 0xd, 0xe5, 0xdc, 0x94, 0x4c, 0xd4, 0xd5, 0xbe, 0x86, 0x4e, 0xc, 0x40, 0x35, 0x26, 0xf2, 0xfd, 0x34, 0x61, 0xa8, 0x3e},
},
{
name: "GoodNorm",
input: `{"checksum":{"function":"sha256","message":"3e1d45e3e47bcb2406ab25b6119225c85e7b2276b0834c7203a125bd7b6ca34f","params":{}},"cipher":{"function":"aes-128-ctr","message":"0ed64a392274f7fcc76f8cf4d22f86057c42e6c6b726cc19dc64e80ebab5d1dd","params":{"iv":"ff6cc499ff4bbfca0125700b29cfa4dc"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"70f3ebd9776781f46c2ead400a3a9ed7ad2880871fe9422a734303d1492f2477"}}}`,
passphrase: "testpasswordü",
output: []byte{0x3f, 0xa3, 0xc2, 0xa1, 0xc9, 0xf5, 0xe6, 0xb3, 0x5b, 0x22, 0x3b, 0x8e, 0x84, 0xcc, 0xb3, 0x94, 0x83, 0x77, 0x20, 0xa7, 0x12, 0xbb, 0xd1, 0xdc, 0xdd, 0xcf, 0xeb, 0x78, 0xa2, 0x98, 0xd0, 0x63},
},
{
name: "GoodAltNorm",
input: `{"checksum":{"function":"sha256","message":"5bbf87c004da9b7f39f9374725c1ae89e15a52306a4d0a73654769ecb39341ed","params":{}},"cipher":{"function":"aes-128-ctr","message":"e3f3ef7027c3ddf579c7a88001ea2fcb17f850dcc8198c3f3ba0610a70a293a0","params":{"iv":"f0855894642fecdcce1696a50a2c0e4e"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"454932cffe9fbc0767c46280663550df4bf64205bfe9f3a359012f21dd9c30bb"}}}`,
passphrase: "testpasswordü",
output: []byte{0x3f, 0xa3, 0xc2, 0xa1, 0xc9, 0xf5, 0xe6, 0xb3, 0x5b, 0x22, 0x3b, 0x8e, 0x84, 0xcc, 0xb3, 0x94, 0x83, 0x77, 0x20, 0xa7, 0x12, 0xbb, 0xd1, 0xdc, 0xdd, 0xcf, 0xeb, 0x78, 0xa2, 0x98, 0xd0, 0x63},
},
{
name: "SCrypt",
input: `{"checksum":{"function":"sha256","message":"a230c7d50dc1e141433559a12cedbe2db2014012b7d5bcda08f399d06ec9bd87","params":{}},"cipher":{"function":"aes-128-ctr","message":"5263382e2ae83dd06020baac533e0173f195be6726f362a683de885c0bdc8e0cec93a411ebc10dfccf8408e23a0072fadc581ab1fcd7a54faae8d2db0680fa76","params":{"iv":"c6437d26eb11abafd373bfb470fd0ad4"}},"kdf":{"function":"scrypt","message":"","params":{"dklen":32,"n":16,"p":8,"r":1,"salt":"20c085c4048f5592cc36bb2a6aa16f0d887f4eb4110849830ceb1eb2dfc0d1be"}}}
`,
passphrase: "wallet passphrase",
output: []byte{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
encryptor := keystorev4.New()
input := make(map[string]any)
err := json.Unmarshal([]byte(test.input), &input)
require.Nil(t, err)
output, err := encryptor.Decrypt(input, test.passphrase)
if test.err != "" {
require.EqualError(t, err, test.err)
} else {
require.Nil(t, err)
assert.Equal(t, test.output, output)
}
})
}
}
func TestDecryptBadInput(t *testing.T) {
tests := []struct {
name string
input map[string]any
err string
}{
{
name: "Nil",
err: "no data supplied",
},
{
name: "Empty",
input: map[string]any{},
err: "no checksum",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
encryptor := keystorev4.New()
_, err := encryptor.Decrypt(test.input, "irrelevant")
require.EqualError(t, err, test.err)
})
}
}
func BenchmarkDecrypt(b *testing.B) {
encryptor := keystorev4.New()
input := make(map[string]any)
require.NoError(b, json.Unmarshal([]byte(`{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`), &input))
for i := 0; i < b.N; i++ {
_, err := encryptor.Decrypt(input, "testpassword")
require.NoError(b, err)
}
}
func BenchmarkDecryptParallel(b *testing.B) {
encryptor := keystorev4.New()
input := make(map[string]any)
require.NoError(b, json.Unmarshal([]byte(`{"checksum":{"function":"sha256","message":"9ca5a58a8a8d7a62c3bd890c51ab3169bcfd7f154947458ac4f2950b059b6b38","params":{}},"cipher":{"function":"aes-128-ctr","message":"12edd28c7290896ea24ecda9066f34a70dbab972d8d975f5727f938ba5a8641f","params":{"iv":"b29d49568661b61e92352e3bb36038d9"}},"kdf":{"function":"pbkdf2","message":"","params":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"d90262ceea3018400076177f5bc55b6e185d5e63361bebdda4a2f7a2066caadc"}}}`), &input))
numCPUs := runtime.NumCPU()
wg := &sync.WaitGroup{}
for i := 0; i < b.N; i++ {
wg.Add(numCPUs)
for j := 0; j < numCPUs; j++ {
go func() {
defer wg.Done()
_, err := encryptor.Decrypt(input, "testpassword")
require.NoError(b, err)
}()
}
wg.Wait()
}
}