301 lines
9.6 KiB
Go
301 lines
9.6 KiB
Go
|
// Copyright 2017 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 cryptobyte
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
encoding_asn1 "encoding/asn1"
|
||
|
|
"math/big"
|
||
|
|
"reflect"
|
||
|
|
"testing"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"golang.org/x/crypto/cryptobyte/asn1"
|
||
|
|
)
|
||
|
|
|
||
|
|
type readASN1Test struct {
|
||
|
|
name string
|
||
|
|
in []byte
|
||
|
|
tag asn1.Tag
|
||
|
|
ok bool
|
||
|
|
out interface{}
|
||
|
|
}
|
||
|
|
|
||
|
|
var readASN1TestData = []readASN1Test{
|
||
|
|
{"valid", []byte{0x30, 2, 1, 2}, 0x30, true, []byte{1, 2}},
|
||
|
|
{"truncated", []byte{0x30, 3, 1, 2}, 0x30, false, nil},
|
||
|
|
{"zero length of length", []byte{0x30, 0x80}, 0x30, false, nil},
|
||
|
|
{"invalid long form length", []byte{0x30, 0x81, 1, 1}, 0x30, false, nil},
|
||
|
|
{"non-minimal length", append([]byte{0x30, 0x82, 0, 0x80}, make([]byte, 0x80)...), 0x30, false, nil},
|
||
|
|
{"invalid tag", []byte{0xa1, 3, 0x4, 1, 1}, 31, false, nil},
|
||
|
|
{"high tag", []byte{0x1f, 0x81, 0x80, 0x01, 2, 1, 2}, 0xff /* actually 0x4001, but tag is uint8 */, false, nil},
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1(t *testing.T) {
|
||
|
|
for _, test := range readASN1TestData {
|
||
|
|
t.Run(test.name, func(t *testing.T) {
|
||
|
|
var in, out String = test.in, nil
|
||
|
|
ok := in.ReadASN1(&out, test.tag)
|
||
|
|
if ok != test.ok || ok && !bytes.Equal(out, test.out.([]byte)) {
|
||
|
|
t.Errorf("in.ReadASN1() = %v, want %v; out = %v, want %v", ok, test.ok, out, test.out)
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1Optional(t *testing.T) {
|
||
|
|
var empty String
|
||
|
|
var present bool
|
||
|
|
ok := empty.ReadOptionalASN1(nil, &present, 0xa0)
|
||
|
|
if !ok || present {
|
||
|
|
t.Errorf("empty.ReadOptionalASN1() = %v, want true; present = %v want false", ok, present)
|
||
|
|
}
|
||
|
|
|
||
|
|
var in, out String = []byte{0xa1, 3, 0x4, 1, 1}, nil
|
||
|
|
ok = in.ReadOptionalASN1(&out, &present, 0xa0)
|
||
|
|
if !ok || present {
|
||
|
|
t.Errorf("in.ReadOptionalASN1() = %v, want true, present = %v, want false", ok, present)
|
||
|
|
}
|
||
|
|
ok = in.ReadOptionalASN1(&out, &present, 0xa1)
|
||
|
|
wantBytes := []byte{4, 1, 1}
|
||
|
|
if !ok || !present || !bytes.Equal(out, wantBytes) {
|
||
|
|
t.Errorf("in.ReadOptionalASN1() = %v, want true; present = %v, want true; out = %v, want = %v", ok, present, out, wantBytes)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var optionalOctetStringTestData = []struct {
|
||
|
|
readASN1Test
|
||
|
|
present bool
|
||
|
|
}{
|
||
|
|
{readASN1Test{"empty", []byte{}, 0xa0, true, []byte{}}, false},
|
||
|
|
{readASN1Test{"invalid", []byte{0xa1, 3, 0x4, 2, 1}, 0xa1, false, []byte{}}, true},
|
||
|
|
{readASN1Test{"missing", []byte{0xa1, 3, 0x4, 1, 1}, 0xa0, true, []byte{}}, false},
|
||
|
|
{readASN1Test{"present", []byte{0xa1, 3, 0x4, 1, 1}, 0xa1, true, []byte{1}}, true},
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1OptionalOctetString(t *testing.T) {
|
||
|
|
for _, test := range optionalOctetStringTestData {
|
||
|
|
t.Run(test.name, func(t *testing.T) {
|
||
|
|
in := String(test.in)
|
||
|
|
var out []byte
|
||
|
|
var present bool
|
||
|
|
ok := in.ReadOptionalASN1OctetString(&out, &present, test.tag)
|
||
|
|
if ok != test.ok || present != test.present || !bytes.Equal(out, test.out.([]byte)) {
|
||
|
|
t.Errorf("in.ReadOptionalASN1OctetString() = %v, want %v; present = %v want %v; out = %v, want %v", ok, test.ok, present, test.present, out, test.out)
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const defaultInt = -1
|
||
|
|
|
||
|
|
var optionalIntTestData = []readASN1Test{
|
||
|
|
{"empty", []byte{}, 0xa0, true, defaultInt},
|
||
|
|
{"invalid", []byte{0xa1, 3, 0x2, 2, 127}, 0xa1, false, 0},
|
||
|
|
{"missing", []byte{0xa1, 3, 0x2, 1, 127}, 0xa0, true, defaultInt},
|
||
|
|
{"present", []byte{0xa1, 3, 0x2, 1, 42}, 0xa1, true, 42},
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1OptionalInteger(t *testing.T) {
|
||
|
|
for _, test := range optionalIntTestData {
|
||
|
|
t.Run(test.name, func(t *testing.T) {
|
||
|
|
in := String(test.in)
|
||
|
|
var out int
|
||
|
|
ok := in.ReadOptionalASN1Integer(&out, test.tag, defaultInt)
|
||
|
|
if ok != test.ok || ok && out != test.out.(int) {
|
||
|
|
t.Errorf("in.ReadOptionalASN1Integer() = %v, want %v; out = %v, want %v", ok, test.ok, out, test.out)
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1IntegerSigned(t *testing.T) {
|
||
|
|
testData64 := []struct {
|
||
|
|
in []byte
|
||
|
|
out int64
|
||
|
|
}{
|
||
|
|
{[]byte{2, 3, 128, 0, 0}, -0x800000},
|
||
|
|
{[]byte{2, 2, 255, 0}, -256},
|
||
|
|
{[]byte{2, 2, 255, 127}, -129},
|
||
|
|
{[]byte{2, 1, 128}, -128},
|
||
|
|
{[]byte{2, 1, 255}, -1},
|
||
|
|
{[]byte{2, 1, 0}, 0},
|
||
|
|
{[]byte{2, 1, 1}, 1},
|
||
|
|
{[]byte{2, 1, 2}, 2},
|
||
|
|
{[]byte{2, 1, 127}, 127},
|
||
|
|
{[]byte{2, 2, 0, 128}, 128},
|
||
|
|
{[]byte{2, 2, 1, 0}, 256},
|
||
|
|
{[]byte{2, 4, 0, 128, 0, 0}, 0x800000},
|
||
|
|
}
|
||
|
|
for i, test := range testData64 {
|
||
|
|
in := String(test.in)
|
||
|
|
var out int64
|
||
|
|
ok := in.ReadASN1Integer(&out)
|
||
|
|
if !ok || out != test.out {
|
||
|
|
t.Errorf("#%d: in.ReadASN1Integer() = %v, want true; out = %d, want %d", i, ok, out, test.out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Repeat the same cases, reading into a big.Int.
|
||
|
|
t.Run("big.Int", func(t *testing.T) {
|
||
|
|
for i, test := range testData64 {
|
||
|
|
in := String(test.in)
|
||
|
|
var out big.Int
|
||
|
|
ok := in.ReadASN1Integer(&out)
|
||
|
|
if !ok || out.Int64() != test.out {
|
||
|
|
t.Errorf("#%d: in.ReadASN1Integer() = %v, want true; out = %d, want %d", i, ok, out.Int64(), test.out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1IntegerUnsigned(t *testing.T) {
|
||
|
|
testData := []struct {
|
||
|
|
in []byte
|
||
|
|
out uint64
|
||
|
|
}{
|
||
|
|
{[]byte{2, 1, 0}, 0},
|
||
|
|
{[]byte{2, 1, 1}, 1},
|
||
|
|
{[]byte{2, 1, 2}, 2},
|
||
|
|
{[]byte{2, 1, 127}, 127},
|
||
|
|
{[]byte{2, 2, 0, 128}, 128},
|
||
|
|
{[]byte{2, 2, 1, 0}, 256},
|
||
|
|
{[]byte{2, 4, 0, 128, 0, 0}, 0x800000},
|
||
|
|
{[]byte{2, 8, 127, 255, 255, 255, 255, 255, 255, 255}, 0x7fffffffffffffff},
|
||
|
|
{[]byte{2, 9, 0, 128, 0, 0, 0, 0, 0, 0, 0}, 0x8000000000000000},
|
||
|
|
{[]byte{2, 9, 0, 255, 255, 255, 255, 255, 255, 255, 255}, 0xffffffffffffffff},
|
||
|
|
}
|
||
|
|
for i, test := range testData {
|
||
|
|
in := String(test.in)
|
||
|
|
var out uint64
|
||
|
|
ok := in.ReadASN1Integer(&out)
|
||
|
|
if !ok || out != test.out {
|
||
|
|
t.Errorf("#%d: in.ReadASN1Integer() = %v, want true; out = %d, want %d", i, ok, out, test.out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1IntegerInvalid(t *testing.T) {
|
||
|
|
testData := []String{
|
||
|
|
[]byte{3, 1, 0}, // invalid tag
|
||
|
|
// truncated
|
||
|
|
[]byte{2, 1},
|
||
|
|
[]byte{2, 2, 0},
|
||
|
|
// not minimally encoded
|
||
|
|
[]byte{2, 2, 0, 1},
|
||
|
|
[]byte{2, 2, 0xff, 0xff},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i, test := range testData {
|
||
|
|
var out int64
|
||
|
|
if test.ReadASN1Integer(&out) {
|
||
|
|
t.Errorf("#%d: in.ReadASN1Integer() = true, want false (out = %d)", i, out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestASN1ObjectIdentifier(t *testing.T) {
|
||
|
|
testData := []struct {
|
||
|
|
in []byte
|
||
|
|
ok bool
|
||
|
|
out []int
|
||
|
|
}{
|
||
|
|
{[]byte{}, false, []int{}},
|
||
|
|
{[]byte{6, 0}, false, []int{}},
|
||
|
|
{[]byte{5, 1, 85}, false, []int{2, 5}},
|
||
|
|
{[]byte{6, 1, 85}, true, []int{2, 5}},
|
||
|
|
{[]byte{6, 2, 85, 0x02}, true, []int{2, 5, 2}},
|
||
|
|
{[]byte{6, 4, 85, 0x02, 0xc0, 0x00}, true, []int{2, 5, 2, 0x2000}},
|
||
|
|
{[]byte{6, 3, 0x81, 0x34, 0x03}, true, []int{2, 100, 3}},
|
||
|
|
{[]byte{6, 7, 85, 0x02, 0xc0, 0x80, 0x80, 0x80, 0x80}, false, []int{}},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i, test := range testData {
|
||
|
|
in := String(test.in)
|
||
|
|
var out encoding_asn1.ObjectIdentifier
|
||
|
|
ok := in.ReadASN1ObjectIdentifier(&out)
|
||
|
|
if ok != test.ok || ok && !out.Equal(test.out) {
|
||
|
|
t.Errorf("#%d: in.ReadASN1ObjectIdentifier() = %v, want %v; out = %v, want %v", i, ok, test.ok, out, test.out)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
var b Builder
|
||
|
|
b.AddASN1ObjectIdentifier(out)
|
||
|
|
result, err := b.Bytes()
|
||
|
|
if builderOk := err == nil; test.ok != builderOk {
|
||
|
|
t.Errorf("#%d: error from Builder.Bytes: %s", i, err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if test.ok && !bytes.Equal(result, test.in) {
|
||
|
|
t.Errorf("#%d: reserialisation didn't match, got %x, want %x", i, result, test.in)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1GeneralizedTime(t *testing.T) {
|
||
|
|
testData := []struct {
|
||
|
|
in string
|
||
|
|
ok bool
|
||
|
|
out time.Time
|
||
|
|
}{
|
||
|
|
{"20100102030405Z", true, time.Date(2010, 01, 02, 03, 04, 05, 0, time.UTC)},
|
||
|
|
{"20100102030405", false, time.Time{}},
|
||
|
|
{"20100102030405+0607", true, time.Date(2010, 01, 02, 03, 04, 05, 0, time.FixedZone("", 6*60*60+7*60))},
|
||
|
|
{"20100102030405-0607", true, time.Date(2010, 01, 02, 03, 04, 05, 0, time.FixedZone("", -6*60*60-7*60))},
|
||
|
|
/* These are invalid times. However, the time package normalises times
|
||
|
|
* and they were accepted in some versions. See #11134. */
|
||
|
|
{"00000100000000Z", false, time.Time{}},
|
||
|
|
{"20101302030405Z", false, time.Time{}},
|
||
|
|
{"20100002030405Z", false, time.Time{}},
|
||
|
|
{"20100100030405Z", false, time.Time{}},
|
||
|
|
{"20100132030405Z", false, time.Time{}},
|
||
|
|
{"20100231030405Z", false, time.Time{}},
|
||
|
|
{"20100102240405Z", false, time.Time{}},
|
||
|
|
{"20100102036005Z", false, time.Time{}},
|
||
|
|
{"20100102030460Z", false, time.Time{}},
|
||
|
|
{"-20100102030410Z", false, time.Time{}},
|
||
|
|
{"2010-0102030410Z", false, time.Time{}},
|
||
|
|
{"2010-0002030410Z", false, time.Time{}},
|
||
|
|
{"201001-02030410Z", false, time.Time{}},
|
||
|
|
{"20100102-030410Z", false, time.Time{}},
|
||
|
|
{"2010010203-0410Z", false, time.Time{}},
|
||
|
|
{"201001020304-10Z", false, time.Time{}},
|
||
|
|
}
|
||
|
|
for i, test := range testData {
|
||
|
|
in := String(append([]byte{byte(asn1.GeneralizedTime), byte(len(test.in))}, test.in...))
|
||
|
|
var out time.Time
|
||
|
|
ok := in.ReadASN1GeneralizedTime(&out)
|
||
|
|
if ok != test.ok || ok && !reflect.DeepEqual(out, test.out) {
|
||
|
|
t.Errorf("#%d: in.ReadASN1GeneralizedTime() = %v, want %v; out = %q, want %q", i, ok, test.ok, out, test.out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadASN1BitString(t *testing.T) {
|
||
|
|
testData := []struct {
|
||
|
|
in []byte
|
||
|
|
ok bool
|
||
|
|
out encoding_asn1.BitString
|
||
|
|
}{
|
||
|
|
{[]byte{}, false, encoding_asn1.BitString{}},
|
||
|
|
{[]byte{0x00}, true, encoding_asn1.BitString{}},
|
||
|
|
{[]byte{0x07, 0x00}, true, encoding_asn1.BitString{Bytes: []byte{0}, BitLength: 1}},
|
||
|
|
{[]byte{0x07, 0x01}, false, encoding_asn1.BitString{}},
|
||
|
|
{[]byte{0x07, 0x40}, false, encoding_asn1.BitString{}},
|
||
|
|
{[]byte{0x08, 0x00}, false, encoding_asn1.BitString{}},
|
||
|
|
{[]byte{0xff}, false, encoding_asn1.BitString{}},
|
||
|
|
{[]byte{0xfe, 0x00}, false, encoding_asn1.BitString{}},
|
||
|
|
}
|
||
|
|
for i, test := range testData {
|
||
|
|
in := String(append([]byte{3, byte(len(test.in))}, test.in...))
|
||
|
|
var out encoding_asn1.BitString
|
||
|
|
ok := in.ReadASN1BitString(&out)
|
||
|
|
if ok != test.ok || ok && (!bytes.Equal(out.Bytes, test.out.Bytes) || out.BitLength != test.out.BitLength) {
|
||
|
|
t.Errorf("#%d: in.ReadASN1BitString() = %v, want %v; out = %v, want %v", i, ok, test.ok, out, test.out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|