Golang crypto.Decrypt函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Golang中github.com/restic/restic/crypto.Decrypt函数的典型用法代码示例。如果您正苦于以下问题：Golang Decrypt函数的具体用法？Golang Decrypt怎么用？Golang Decrypt使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Decrypt函数的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestEncryptWriter

func TestEncryptWriter(t *testing.T) {
	k := crypto.NewRandomKey()

	tests := []int{5, 23, 2<<18 + 23, 1 << 20}
	if testLargeCrypto {
		tests = append(tests, 7<<20+123)
	}

	for _, size := range tests {
		data := make([]byte, size)
		_, err := io.ReadFull(RandomReader(42, size), data)
		OK(t, err)

		buf := bytes.NewBuffer(nil)
		wr := crypto.EncryptTo(k, buf)

		_, err = io.Copy(wr, bytes.NewReader(data))
		OK(t, err)
		OK(t, wr.Close())

		ciphertext := buf.Bytes()

		l := len(data) + crypto.Extension
		Assert(t, len(ciphertext) == l,
			"wrong ciphertext length: expected %d, got %d",
			l, len(ciphertext))

		// decrypt with default function
		plaintext, err := crypto.Decrypt(k, []byte{}, ciphertext)
		OK(t, err)
		Assert(t, bytes.Equal(data, plaintext),
			"wrong plaintext after decryption: expected %02x, got %02x",
			data, plaintext)
	}
}

开发者ID:klauspost，项目名称:restic，代码行数:35，代码来源:crypto_test.go

示例2: TestEncryptDecrypt

func TestEncryptDecrypt(t *testing.T) {
	k := crypto.NewRandomKey()

	tests := []int{5, 23, 2<<18 + 23, 1 << 20}
	if testLargeCrypto {
		tests = append(tests, 7<<20+123)
	}

	for _, size := range tests {
		data := make([]byte, size)
		_, err := io.ReadFull(RandomReader(42, size), data)
		OK(t, err)

		buf := make([]byte, size+crypto.Extension)

		ciphertext, err := crypto.Encrypt(k, buf, data)
		OK(t, err)
		Assert(t, len(ciphertext) == len(data)+crypto.Extension,
			"ciphertext length does not match: want %d, got %d",
			len(data)+crypto.Extension, len(ciphertext))

		plaintext, err := crypto.Decrypt(k, nil, ciphertext)
		OK(t, err)
		Assert(t, len(plaintext) == len(data),
			"plaintext length does not match: want %d, got %d",
			len(data), len(plaintext))

		Equals(t, plaintext, data)
	}
}

开发者ID:klauspost，项目名称:restic，代码行数:30，代码来源:crypto_test.go

示例3: decryptTo

// decrypt authenticates and decrypts ciphertext and stores the result in
// plaintext.
func (r *Repository) decryptTo(plaintext, ciphertext []byte) ([]byte, error) {
	if r.key == nil {
		return nil, errors.New("key for repository not set")
	}

	return crypto.Decrypt(r.key, nil, ciphertext)
}

开发者ID:jhautefeuille，项目名称:restic，代码行数:9，代码来源:repository.go

示例4: Decrypt

func (s *Repository) Decrypt(ciphertext []byte) ([]byte, error) {
	if s.key == nil {
		return nil, errors.New("key for repository not set")
	}

	return crypto.Decrypt(s.key, nil, ciphertext)
}

开发者ID:badboy，项目名称:restic，代码行数:7，代码来源:repository.go

示例5: checkPack

// checkPack reads a pack and checks the integrity of all blobs.
func checkPack(r *repository.Repository, id backend.ID) error {
	debug.Log("Checker.checkPack", "checking pack %v", id.Str())
	rd, err := r.Backend().Get(backend.Data, id.String())
	if err != nil {
		return err
	}

	buf, err := ioutil.ReadAll(rd)
	if err != nil {
		return err
	}

	err = rd.Close()
	if err != nil {
		return err
	}

	unpacker, err := pack.NewUnpacker(r.Key(), bytes.NewReader(buf))
	if err != nil {
		return err
	}

	var errs []error
	for i, blob := range unpacker.Entries {
		debug.Log("Checker.checkPack", "  check blob %d: %v", i, blob.ID.Str())

		plainBuf := make([]byte, blob.Length)
		plainBuf, err = crypto.Decrypt(r.Key(), plainBuf, buf[blob.Offset:blob.Offset+blob.Length])
		if err != nil {
			debug.Log("Checker.checkPack", "  error decrypting blob %v: %v", blob.ID.Str(), err)
			errs = append(errs, fmt.Errorf("blob %v: %v", i, err))
			continue
		}

		hash := backend.Hash(plainBuf)
		if !hash.Equal(blob.ID) {
			debug.Log("Checker.checkPack", "  ID does not match, want %v, got %v", blob.ID.Str(), hash.Str())
			errs = append(errs, fmt.Errorf("ID does not match, want %v, got %v", blob.ID.Str(), hash.Str()))
			continue
		}
	}

	if len(errs) > 0 {
		return fmt.Errorf("pack %v contains %v errors: %v", id.Str(), len(errs), errs)
	}

	return nil
}

开发者ID:marete，项目名称:restic，代码行数:49，代码来源:checker.go

示例6: TestSameBuffer

func TestSameBuffer(t *testing.T) {
	k := crypto.NewRandomKey()

	size := 600
	data := make([]byte, size)
	_, err := io.ReadFull(rand.Reader, data)
	OK(t, err)

	ciphertext := make([]byte, 0, size+crypto.Extension)

	ciphertext, err = crypto.Encrypt(k, ciphertext, data)
	OK(t, err)

	// use the same buffer for decryption
	ciphertext, err = crypto.Decrypt(k, ciphertext, ciphertext)
	OK(t, err)
	Assert(t, bytes.Equal(ciphertext, data),
		"wrong plaintext returned")
}

开发者ID:jhautefeuille，项目名称:restic，代码行数:19，代码来源:crypto_test.go

示例7: BenchmarkDecrypt

func BenchmarkDecrypt(b *testing.B) {
	size := 8 << 20 // 8MiB
	data := make([]byte, size)

	k := crypto.NewRandomKey()

	plaintext := make([]byte, size)
	ciphertext := make([]byte, size+crypto.Extension)

	ciphertext, err := crypto.Encrypt(k, ciphertext, data)
	OK(b, err)

	b.ResetTimer()
	b.SetBytes(int64(size))

	for i := 0; i < b.N; i++ {
		plaintext, err = crypto.Decrypt(k, plaintext, ciphertext)
		OK(b, err)
	}
}

开发者ID:klauspost，项目名称:restic，代码行数:20，代码来源:crypto_test.go

示例8: TestCornerCases

func TestCornerCases(t *testing.T) {
	k := crypto.NewRandomKey()

	// nil plaintext should encrypt to the empty string
	// nil ciphertext should allocate a new slice for the ciphertext
	c, err := crypto.Encrypt(k, nil, nil)
	OK(t, err)

	Assert(t, len(c) == crypto.Extension,
		"wrong length returned for ciphertext, expected 0, got %d",
		len(c))

	// this should decrypt to nil
	p, err := crypto.Decrypt(k, nil, c)
	OK(t, err)
	Equals(t, []byte(nil), p)

	// test encryption for same slice, this should return an error
	_, err = crypto.Encrypt(k, c, c)
	Equals(t, crypto.ErrInvalidCiphertext, err)
}

开发者ID:klauspost，项目名称:restic，代码行数:21，代码来源:crypto_test.go

示例9: TestSmallBuffer

func TestSmallBuffer(t *testing.T) {
	k := crypto.NewRandomKey()

	size := 600
	data := make([]byte, size)
	_, err := io.ReadFull(rand.Reader, data)
	OK(t, err)

	ciphertext := make([]byte, size/2)
	ciphertext, err = crypto.Encrypt(k, ciphertext, data)
	// this must extend the slice
	Assert(t, cap(ciphertext) > size/2,
		"expected extended slice, but capacity is only %d bytes",
		cap(ciphertext))

	// check for the correct plaintext
	plaintext, err := crypto.Decrypt(k, nil, ciphertext)
	OK(t, err)
	Assert(t, bytes.Equal(plaintext, data),
		"wrong plaintext returned")
}

开发者ID:jhautefeuille，项目名称:restic，代码行数:21，代码来源:crypto_test.go

示例10: TestLargeEncrypt

func TestLargeEncrypt(t *testing.T) {
	if !testLargeCrypto {
		t.SkipNow()
	}

	k := crypto.NewRandomKey()

	for _, size := range []int{chunker.MaxSize, chunker.MaxSize + 1, chunker.MaxSize + 1<<20} {
		data := make([]byte, size)
		_, err := io.ReadFull(rand.Reader, data)
		OK(t, err)

		ciphertext, err := crypto.Encrypt(k, make([]byte, size+crypto.Extension), data)
		OK(t, err)

		plaintext, err := crypto.Decrypt(k, []byte{}, ciphertext)
		OK(t, err)

		Equals(t, plaintext, data)
	}
}

开发者ID:jhautefeuille，项目名称:restic，代码行数:21，代码来源:crypto_test.go

示例11: OpenKey

// OpenKey tries do decrypt the key specified by name with the given password.
func OpenKey(s *Repository, name string, password string) (*Key, error) {
	k, err := LoadKey(s, name)
	if err != nil {
		debug.Log("OpenKey", "LoadKey(%v) returned error %v", name[:12], err)
		return nil, err
	}

	// check KDF
	if k.KDF != "scrypt" {
		return nil, errors.New("only supported KDF is scrypt()")
	}

	// derive user key
	k.user, err = crypto.KDF(k.N, k.R, k.P, k.Salt, password)
	if err != nil {
		return nil, err
	}

	// decrypt master keys
	buf, err := crypto.Decrypt(k.user, []byte{}, k.Data)
	if err != nil {
		return nil, err
	}

	// restore json
	k.master = &crypto.Key{}
	err = json.Unmarshal(buf, k.master)
	if err != nil {
		debug.Log("OpenKey", "Unmarshal() returned error %v", err)
		return nil, err
	}
	k.name = name

	if !k.Valid() {
		return nil, errors.New("Invalid key for repository")
	}

	return k, nil
}

开发者ID:jhautefeuille，项目名称:restic，代码行数:40，代码来源:key.go

注：本文中的github.com/restic/restic/crypto.Decrypt函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。