mirror of
https://github.com/octoleo/restic.git
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244 lines
6.7 KiB
Go
244 lines
6.7 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package bcrypt
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import (
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"bytes"
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"fmt"
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"testing"
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)
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func TestBcryptingIsEasy(t *testing.T) {
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pass := []byte("mypassword")
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hp, err := GenerateFromPassword(pass, 0)
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if err != nil {
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t.Fatalf("GenerateFromPassword error: %s", err)
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}
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if CompareHashAndPassword(hp, pass) != nil {
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t.Errorf("%v should hash %s correctly", hp, pass)
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}
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notPass := "notthepass"
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err = CompareHashAndPassword(hp, []byte(notPass))
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if err != ErrMismatchedHashAndPassword {
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t.Errorf("%v and %s should be mismatched", hp, notPass)
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}
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}
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func TestBcryptingIsCorrect(t *testing.T) {
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pass := []byte("allmine")
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salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
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expectedHash := []byte("$2a$10$XajjQvNhvvRt5GSeFk1xFeyqRrsxkhBkUiQeg0dt.wU1qD4aFDcga")
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hash, err := bcrypt(pass, 10, salt)
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if err != nil {
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t.Fatalf("bcrypt blew up: %v", err)
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}
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if !bytes.HasSuffix(expectedHash, hash) {
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t.Errorf("%v should be the suffix of %v", hash, expectedHash)
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}
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h, err := newFromHash(expectedHash)
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if err != nil {
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t.Errorf("Unable to parse %s: %v", string(expectedHash), err)
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}
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// This is not the safe way to compare these hashes. We do this only for
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// testing clarity. Use bcrypt.CompareHashAndPassword()
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if err == nil && !bytes.Equal(expectedHash, h.Hash()) {
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t.Errorf("Parsed hash %v should equal %v", h.Hash(), expectedHash)
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}
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}
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func TestVeryShortPasswords(t *testing.T) {
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key := []byte("k")
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salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
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_, err := bcrypt(key, 10, salt)
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if err != nil {
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t.Errorf("One byte key resulted in error: %s", err)
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}
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}
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func TestTooLongPasswordsWork(t *testing.T) {
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salt := []byte("XajjQvNhvvRt5GSeFk1xFe")
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// One byte over the usual 56 byte limit that blowfish has
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tooLongPass := []byte("012345678901234567890123456789012345678901234567890123456")
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tooLongExpected := []byte("$2a$10$XajjQvNhvvRt5GSeFk1xFe5l47dONXg781AmZtd869sO8zfsHuw7C")
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hash, err := bcrypt(tooLongPass, 10, salt)
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if err != nil {
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t.Fatalf("bcrypt blew up on long password: %v", err)
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}
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if !bytes.HasSuffix(tooLongExpected, hash) {
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t.Errorf("%v should be the suffix of %v", hash, tooLongExpected)
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}
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}
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type InvalidHashTest struct {
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err error
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hash []byte
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}
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var invalidTests = []InvalidHashTest{
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{ErrHashTooShort, []byte("$2a$10$fooo")},
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{ErrHashTooShort, []byte("$2a")},
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{HashVersionTooNewError('3'), []byte("$3a$10$sssssssssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh")},
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{InvalidHashPrefixError('%'), []byte("%2a$10$sssssssssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh")},
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{InvalidCostError(32), []byte("$2a$32$sssssssssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh")},
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}
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func TestInvalidHashErrors(t *testing.T) {
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check := func(name string, expected, err error) {
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if err == nil {
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t.Errorf("%s: Should have returned an error", name)
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}
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if err != nil && err != expected {
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t.Errorf("%s gave err %v but should have given %v", name, err, expected)
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}
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}
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for _, iht := range invalidTests {
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_, err := newFromHash(iht.hash)
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check("newFromHash", iht.err, err)
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err = CompareHashAndPassword(iht.hash, []byte("anything"))
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check("CompareHashAndPassword", iht.err, err)
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}
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}
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func TestUnpaddedBase64Encoding(t *testing.T) {
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original := []byte{101, 201, 101, 75, 19, 227, 199, 20, 239, 236, 133, 32, 30, 109, 243, 30}
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encodedOriginal := []byte("XajjQvNhvvRt5GSeFk1xFe")
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encoded := base64Encode(original)
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if !bytes.Equal(encodedOriginal, encoded) {
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t.Errorf("Encoded %v should have equaled %v", encoded, encodedOriginal)
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}
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decoded, err := base64Decode(encodedOriginal)
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if err != nil {
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t.Fatalf("base64Decode blew up: %s", err)
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}
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if !bytes.Equal(decoded, original) {
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t.Errorf("Decoded %v should have equaled %v", decoded, original)
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}
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}
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func TestCost(t *testing.T) {
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suffix := "XajjQvNhvvRt5GSeFk1xFe5l47dONXg781AmZtd869sO8zfsHuw7C"
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for _, vers := range []string{"2a", "2"} {
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for _, cost := range []int{4, 10} {
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s := fmt.Sprintf("$%s$%02d$%s", vers, cost, suffix)
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h := []byte(s)
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actual, err := Cost(h)
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if err != nil {
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t.Errorf("Cost, error: %s", err)
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continue
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}
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if actual != cost {
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t.Errorf("Cost, expected: %d, actual: %d", cost, actual)
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}
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}
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}
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_, err := Cost([]byte("$a$a$" + suffix))
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if err == nil {
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t.Errorf("Cost, malformed but no error returned")
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}
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}
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func TestCostValidationInHash(t *testing.T) {
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if testing.Short() {
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return
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}
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pass := []byte("mypassword")
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for c := 0; c < MinCost; c++ {
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p, _ := newFromPassword(pass, c)
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if p.cost != DefaultCost {
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t.Errorf("newFromPassword should default costs below %d to %d, but was %d", MinCost, DefaultCost, p.cost)
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}
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}
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p, _ := newFromPassword(pass, 14)
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if p.cost != 14 {
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t.Errorf("newFromPassword should default cost to 14, but was %d", p.cost)
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}
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hp, _ := newFromHash(p.Hash())
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if p.cost != hp.cost {
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t.Errorf("newFromHash should maintain the cost at %d, but was %d", p.cost, hp.cost)
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}
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_, err := newFromPassword(pass, 32)
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if err == nil {
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t.Fatalf("newFromPassword: should return a cost error")
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}
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if err != InvalidCostError(32) {
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t.Errorf("newFromPassword: should return cost error, got %#v", err)
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}
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}
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func TestCostReturnsWithLeadingZeroes(t *testing.T) {
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hp, _ := newFromPassword([]byte("abcdefgh"), 7)
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cost := hp.Hash()[4:7]
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expected := []byte("07$")
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if !bytes.Equal(expected, cost) {
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t.Errorf("single digit costs in hash should have leading zeros: was %v instead of %v", cost, expected)
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}
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}
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func TestMinorNotRequired(t *testing.T) {
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noMinorHash := []byte("$2$10$XajjQvNhvvRt5GSeFk1xFeyqRrsxkhBkUiQeg0dt.wU1qD4aFDcga")
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h, err := newFromHash(noMinorHash)
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if err != nil {
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t.Fatalf("No minor hash blew up: %s", err)
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}
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if h.minor != 0 {
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t.Errorf("Should leave minor version at 0, but was %d", h.minor)
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}
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if !bytes.Equal(noMinorHash, h.Hash()) {
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t.Errorf("Should generate hash %v, but created %v", noMinorHash, h.Hash())
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}
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}
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func BenchmarkEqual(b *testing.B) {
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b.StopTimer()
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passwd := []byte("somepasswordyoulike")
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hash, _ := GenerateFromPassword(passwd, 10)
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b.StartTimer()
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for i := 0; i < b.N; i++ {
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CompareHashAndPassword(hash, passwd)
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}
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}
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func BenchmarkGeneration(b *testing.B) {
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b.StopTimer()
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passwd := []byte("mylongpassword1234")
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b.StartTimer()
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for i := 0; i < b.N; i++ {
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GenerateFromPassword(passwd, 10)
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}
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}
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// See Issue https://github.com/golang/go/issues/20425.
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func TestNoSideEffectsFromCompare(t *testing.T) {
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source := []byte("passw0rd123456")
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password := source[:len(source)-6]
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token := source[len(source)-6:]
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want := make([]byte, len(source))
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copy(want, source)
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wantHash := []byte("$2a$10$LK9XRuhNxHHCvjX3tdkRKei1QiCDUKrJRhZv7WWZPuQGRUM92rOUa")
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_ = CompareHashAndPassword(wantHash, password)
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got := bytes.Join([][]byte{password, token}, []byte(""))
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if !bytes.Equal(got, want) {
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t.Errorf("got=%q want=%q", got, want)
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}
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}
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