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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package s2k
import (
"bytes"
"crypto"
"crypto/rand"
"crypto/sha1"
_ "crypto/sha256"
_ "crypto/sha512"
"encoding/hex"
"testing"
_ "golang.org/x/crypto/ripemd160"
_ "golang.org/x/crypto/sha3"
)
var saltedTests = []struct {
in, out string
}{
{"hello", "10295ac1"},
{"world", "ac587a5e"},
{"foo", "4dda8077"},
{"bar", "bd8aac6b9ea9cae04eae6a91c6133b58b5d9a61c14f355516ed9370456"},
{"x", "f1d3f289"},
{"xxxxxxxxxxxxxxxxxxxxxxx", "e00d7b45"},
}
func TestSalted(t *testing.T) {
h := sha1.New()
salt := [4]byte{1, 2, 3, 4}
for i, test := range saltedTests {
expected, _ := hex.DecodeString(test.out)
out := make([]byte, len(expected))
Salted(out, h, []byte(test.in), salt[:])
if !bytes.Equal(expected, out) {
t.Errorf("#%d, got: %x want: %x", i, out, expected)
}
}
}
var iteratedTests = []struct {
in, out string
}{
{"hello", "83126105"},
{"world", "6fa317f9"},
{"foo", "8fbc35b9"},
{"bar", "2af5a99b54f093789fd657f19bd245af7604d0f6ae06f66602a46a08ae"},
{"x", "5a684dfe"},
{"xxxxxxxxxxxxxxxxxxxxxxx", "18955174"},
}
func TestIterated(t *testing.T) {
h := sha1.New()
salt := [4]byte{4, 3, 2, 1}
for i, test := range iteratedTests {
expected, _ := hex.DecodeString(test.out)
out := make([]byte, len(expected))
Iterated(out, h, []byte(test.in), salt[:], 31)
if !bytes.Equal(expected, out) {
t.Errorf("#%d, got: %x want: %x", i, out, expected)
}
}
}
var parseTests = []struct {
spec, in, out string
dummyKey bool
params Params
}{
/* Simple with SHA1 */
{"0002", "hello", "aaf4c61d", false,
Params{0, 0x02, nil, 0}},
/* Salted with SHA1 */
{"01020102030405060708", "hello", "f4f7d67e", false,
Params{1, 0x02, []byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}, 0}},
/* Iterated with SHA1 */
{"03020102030405060708f1", "hello", "f2a57b7c", false,
Params{3, 0x02, []byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}, 0xf1}},
/* GNU dummy S2K */
{"6502474e5501", "", "", true,
Params{101, 0x02, nil, 0}},
}
func TestParseIntoParams(t *testing.T) {
for i, test := range parseTests {
spec, _ := hex.DecodeString(test.spec)
buf := bytes.NewBuffer(spec)
params, err := ParseIntoParams(buf)
if err != nil {
t.Errorf("%d: ParseIntoParams returned error: %s", i, err)
continue
}
if test.params.mode != params.mode || test.params.hashId != params.hashId || test.params.countByte != params.countByte ||
!bytes.Equal(test.params.salt, params.salt) {
t.Errorf("%d: Wrong s2kconfig, got: %+v want: %+v", i, params, test.params)
}
if params.Dummy() != test.dummyKey {
t.Errorf("%d: Got GNU dummy %v, expected %v", i, params.Dummy(), test.dummyKey)
}
if !test.dummyKey {
expectedHash, _ := hex.DecodeString(test.out)
out := make([]byte, len(expectedHash))
f, err := params.Function()
if err != nil {
t.Errorf("%d: params.Function() returned error: %s", i, err)
continue
}
f(out, []byte(test.in))
if !bytes.Equal(out, expectedHash) {
t.Errorf("%d: Wrong output got: %x want: %x", i, out, expectedHash)
}
}
var reserialized bytes.Buffer
err = params.Serialize(&reserialized)
if err != nil {
t.Errorf("%d: params.Serialize() returned error: %s", i, err)
continue
}
if !bytes.Equal(reserialized.Bytes(), spec) {
t.Errorf("%d: Wrong reserialized got: %x want: %x", i, reserialized.Bytes(), spec)
}
if testing.Short() {
break
}
}
}
func TestSerializeOK(t *testing.T) {
hashes := []crypto.Hash{crypto.SHA256, crypto.SHA384, crypto.SHA512, crypto.SHA224, crypto.SHA3_256,
crypto.SHA3_512, crypto.SHA1, crypto.RIPEMD160}
testCounts := []int{-1, 0, 1024, 65536, 4063232, 65011712}
for _, h := range hashes {
for _, c := range testCounts {
testSerializeConfigOK(t, &Config{Hash: h, S2KCount: c})
}
}
}
func testSerializeConfigOK(t *testing.T, c *Config) {
buf := bytes.NewBuffer(nil)
key := make([]byte, 16)
passphrase := []byte("testing")
err := Serialize(buf, key, rand.Reader, passphrase, c)
if err != nil {
t.Errorf("failed to serialize with config %+v: %s", c, err)
return
}
f, err := Parse(buf)
if err != nil {
t.Errorf("failed to reparse: %s", err)
return
}
key2 := make([]byte, len(key))
f(key2, passphrase)
if !bytes.Equal(key2, key) {
t.Errorf("keys don't match: %x (serialied) vs %x (parsed)", key, key2)
}
}
func testSerializeConfigErr(t *testing.T, c *Config) {
buf := bytes.NewBuffer(nil)
key := make([]byte, 16)
passphrase := []byte("testing")
err := Serialize(buf, key, rand.Reader, passphrase, c)
if err == nil {
t.Errorf("expected to fail serialization with config %+v", c)
return
}
}
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