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			200 lines
		
	
	
		
			6.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			200 lines
		
	
	
		
			6.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program.  If not, see <http://www.gnu.org/licenses/>.
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package crypto
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import (
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	"bytes"
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	"crypto/rand"
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	"encoding/hex"
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	"io"
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	"testing"
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	"github.com/minio/minio/cmd/logger"
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)
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var shortRandom = func(limit int64) io.Reader { return io.LimitReader(rand.Reader, limit) }
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func recoverTest(i int, shouldPass bool, t *testing.T) {
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	if err := recover(); err == nil && !shouldPass {
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		t.Errorf("Test %d should fail but passed successfully", i)
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	} else if err != nil && shouldPass {
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		t.Errorf("Test %d should pass but failed: %v", i, err)
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	}
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}
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var generateKeyTests = []struct {
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	ExtKey     [32]byte
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	Random     io.Reader
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	ShouldPass bool
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}{
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	{ExtKey: [32]byte{}, Random: nil, ShouldPass: true},              // 0
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	{ExtKey: [32]byte{}, Random: rand.Reader, ShouldPass: true},      // 1
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	{ExtKey: [32]byte{}, Random: shortRandom(32), ShouldPass: true},  // 2
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	{ExtKey: [32]byte{}, Random: shortRandom(31), ShouldPass: false}, // 3
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}
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func TestGenerateKey(t *testing.T) {
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	defer func(disableLog bool) { logger.Disable = disableLog }(logger.Disable)
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	logger.Disable = true
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	for i, test := range generateKeyTests {
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		i, test := i, test
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		func() {
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			defer recoverTest(i, test.ShouldPass, t)
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			key := GenerateKey(test.ExtKey[:], test.Random)
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			if [32]byte(key) == [32]byte{} {
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				t.Errorf("Test %d: generated key is zero key", i) // check that we generate random and unique key
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			}
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		}()
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	}
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}
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var generateIVTests = []struct {
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	Random     io.Reader
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	ShouldPass bool
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}{
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	{Random: nil, ShouldPass: true},              // 0
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	{Random: rand.Reader, ShouldPass: true},      // 1
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	{Random: shortRandom(32), ShouldPass: true},  // 2
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	{Random: shortRandom(31), ShouldPass: false}, // 3
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}
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func TestGenerateIV(t *testing.T) {
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	defer func(disableLog bool) { logger.Disable = disableLog }(logger.Disable)
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	logger.Disable = true
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	for i, test := range generateIVTests {
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		i, test := i, test
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		func() {
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			defer recoverTest(i, test.ShouldPass, t)
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			iv := GenerateIV(test.Random)
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			if iv == [32]byte{} {
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				t.Errorf("Test %d: generated IV is zero IV", i) // check that we generate random and unique IV
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			}
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		}()
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	}
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}
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var sealUnsealKeyTests = []struct {
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	SealExtKey, SealIV                 [32]byte
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	SealDomain, SealBucket, SealObject string
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	UnsealExtKey                             [32]byte
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	UnsealDomain, UnsealBucket, UnsealObject string
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	ShouldPass bool
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}{
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	{
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		SealExtKey: [32]byte{}, SealIV: [32]byte{}, SealDomain: "SSE-C", SealBucket: "bucket", SealObject: "object",
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		UnsealExtKey: [32]byte{}, UnsealDomain: "SSE-C", UnsealBucket: "bucket", UnsealObject: "object",
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		ShouldPass: true,
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	}, // 0
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	{
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		SealExtKey: [32]byte{}, SealIV: [32]byte{}, SealDomain: "SSE-C", SealBucket: "bucket", SealObject: "object",
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		UnsealExtKey: [32]byte{1}, UnsealDomain: "SSE-C", UnsealBucket: "bucket", UnsealObject: "object", // different ext-key
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		ShouldPass: false,
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	}, // 1
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	{
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		SealExtKey: [32]byte{}, SealIV: [32]byte{}, SealDomain: "SSE-S3", SealBucket: "bucket", SealObject: "object",
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		UnsealExtKey: [32]byte{}, UnsealDomain: "SSE-C", UnsealBucket: "bucket", UnsealObject: "object", // different domain
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		ShouldPass: false,
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	}, // 2
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	{
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		SealExtKey: [32]byte{}, SealIV: [32]byte{}, SealDomain: "SSE-C", SealBucket: "bucket", SealObject: "object",
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		UnsealExtKey: [32]byte{}, UnsealDomain: "SSE-C", UnsealBucket: "Bucket", UnsealObject: "object", // different bucket
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		ShouldPass: false,
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	}, // 3
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	{
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		SealExtKey: [32]byte{}, SealIV: [32]byte{}, SealDomain: "SSE-C", SealBucket: "bucket", SealObject: "object",
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		UnsealExtKey: [32]byte{}, UnsealDomain: "SSE-C", UnsealBucket: "bucket", UnsealObject: "Object", // different object
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		ShouldPass: false,
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	}, // 4
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}
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func TestSealUnsealKey(t *testing.T) {
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	for i, test := range sealUnsealKeyTests {
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		key := GenerateKey(test.SealExtKey[:], rand.Reader)
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		sealedKey := key.Seal(test.SealExtKey[:], test.SealIV, test.SealDomain, test.SealBucket, test.SealObject)
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		if err := key.Unseal(test.UnsealExtKey[:], sealedKey, test.UnsealDomain, test.UnsealBucket, test.UnsealObject); err == nil && !test.ShouldPass {
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			t.Errorf("Test %d should fail but passed successfully", i)
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		} else if err != nil && test.ShouldPass {
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			t.Errorf("Test %d should pass put failed: %v", i, err)
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		}
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	}
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	// Test legacy InsecureSealAlgorithm
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	var extKey, iv [32]byte
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	key := GenerateKey(extKey[:], rand.Reader)
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	sealedKey := key.Seal(extKey[:], iv, "SSE-S3", "bucket", "object")
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	sealedKey.Algorithm = InsecureSealAlgorithm
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	if err := key.Unseal(extKey[:], sealedKey, "SSE-S3", "bucket", "object"); err == nil {
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		t.Errorf("'%s' test succeeded but it should fail because the legacy algorithm was used", sealedKey.Algorithm)
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	}
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}
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var derivePartKeyTest = []struct {
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	PartID  uint32
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	PartKey string
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}{
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	{PartID: 0, PartKey: "aa7855e13839dd767cd5da7c1ff5036540c9264b7a803029315e55375287b4af"},
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	{PartID: 1, PartKey: "a3e7181c6eed030fd52f79537c56c4d07da92e56d374ff1dd2043350785b37d8"},
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	{PartID: 10000, PartKey: "f86e65c396ed52d204ee44bd1a0bbd86eb8b01b7354e67a3b3ae0e34dd5bd115"},
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}
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func TestDerivePartKey(t *testing.T) {
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	var key ObjectKey
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	for i, test := range derivePartKeyTest {
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		expectedPartKey, err := hex.DecodeString(test.PartKey)
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		if err != nil {
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			t.Fatalf("Test %d failed to decode expected part-key: %v", i, err)
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		}
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		partKey := key.DerivePartKey(test.PartID)
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		if !bytes.Equal(partKey[:], expectedPartKey[:]) {
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			t.Errorf("Test %d derives wrong part-key: got '%s' want: '%s'", i, hex.EncodeToString(partKey[:]), test.PartKey)
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		}
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	}
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}
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var sealUnsealETagTests = []string{
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	"",
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	"90682b8e8cc7609c",
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	"90682b8e8cc7609c4671e1d64c73fc30",
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	"90682b8e8cc7609c4671e1d64c73fc307fb3104f",
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}
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func TestSealETag(t *testing.T) {
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	var key ObjectKey
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	for i := range key {
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		key[i] = byte(i)
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	}
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	for i, etag := range sealUnsealETagTests {
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		tag, err := hex.DecodeString(etag)
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		if err != nil {
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			t.Errorf("Test %d: failed to decode etag: %s", i, err)
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		}
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		sealedETag := key.SealETag(tag)
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		unsealedETag, err := key.UnsealETag(sealedETag)
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		if err != nil {
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			t.Errorf("Test %d: failed to decrypt etag: %s", i, err)
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		}
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		if !bytes.Equal(unsealedETag, tag) {
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			t.Errorf("Test %d: unsealed etag does not match: got %s - want %s", i, hex.EncodeToString(unsealedETag), etag)
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		}
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	}
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}
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