kms

package
v0.33.0 Latest Latest
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 Go to latest Published: Nov 13, 2018 License: Apache-2.0 Imports: 17 Imported by: 0

Documentation

Overview

Manages keys and performs cryptographic operations in a central cloud service, for direct use by other cloud resources and applications.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func DefaultAuthScopes 

func DefaultAuthScopes() []string

DefaultAuthScopes reports the default set of authentication scopes to use with this package.

Types

type CryptoKeyIterator 

type CryptoKeyIterator struct {

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*kmspb.CryptoKey, nextPageToken string, err error)
	// contains filtered or unexported fields
}

CryptoKeyIterator manages a stream of *kmspb.CryptoKey.

func (*CryptoKeyIterator) Next 

func (it *CryptoKeyIterator) Next() (*kmspb.CryptoKey, error)

Next returns the next result. Its second return value is iterator.Done if there are no more results. Once Next returns Done, all subsequent calls will return Done.

func (*CryptoKeyIterator) PageInfo 

func (it *CryptoKeyIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type CryptoKeyVersionIterator 

type CryptoKeyVersionIterator struct {

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*kmspb.CryptoKeyVersion, nextPageToken string, err error)
	// contains filtered or unexported fields
}

CryptoKeyVersionIterator manages a stream of *kmspb.CryptoKeyVersion.

func (*CryptoKeyVersionIterator) Next 

func (it *CryptoKeyVersionIterator) Next() (*kmspb.CryptoKeyVersion, error)

Next returns the next result. Its second return value is iterator.Done if there are no more results. Once Next returns Done, all subsequent calls will return Done.

func (*CryptoKeyVersionIterator) PageInfo 

func (it *CryptoKeyVersionIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type KeyManagementCallOptions 

type KeyManagementCallOptions struct {
	ListKeyRings                  []gax.CallOption
	ListCryptoKeys                []gax.CallOption
	ListCryptoKeyVersions         []gax.CallOption
	GetKeyRing                    []gax.CallOption
	GetCryptoKey                  []gax.CallOption
	GetCryptoKeyVersion           []gax.CallOption
	CreateKeyRing                 []gax.CallOption
	CreateCryptoKey               []gax.CallOption
	CreateCryptoKeyVersion        []gax.CallOption
	UpdateCryptoKey               []gax.CallOption
	UpdateCryptoKeyVersion        []gax.CallOption
	Encrypt                       []gax.CallOption
	Decrypt                       []gax.CallOption
	UpdateCryptoKeyPrimaryVersion []gax.CallOption
	DestroyCryptoKeyVersion       []gax.CallOption
	RestoreCryptoKeyVersion       []gax.CallOption
	GetPublicKey                  []gax.CallOption
	AsymmetricDecrypt             []gax.CallOption
	AsymmetricSign                []gax.CallOption
}

KeyManagementCallOptions contains the retry settings for each method of KeyManagementClient.

type KeyManagementClient 

type KeyManagementClient struct {

	// The call options for this service.
	CallOptions *KeyManagementCallOptions
	// contains filtered or unexported fields
}

KeyManagementClient is a client for interacting with Cloud Key Management Service (KMS) API.

Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

func NewKeyManagementClient 

func NewKeyManagementClient(ctx context.Context, opts ...option.ClientOption) (*KeyManagementClient, error)

NewKeyManagementClient creates a new key management service client.

Google Cloud Key Management Service

Manages cryptographic keys and operations using those keys. Implements a REST model with the following objects: 

[KeyRing][google.cloud.kms.v1.KeyRing]

[CryptoKey][google.cloud.kms.v1.CryptoKey]

[CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion]

If you are using manual gRPC libraries, see Using gRPC with Cloud KMS (at https://cloud.google.com/kms/docs/grpc).

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use client.
_ = c

Output:

func (*KeyManagementClient) AsymmetricDecrypt added in v0.28.0 

func (c *KeyManagementClient) AsymmetricDecrypt(ctx context.Context, req *kmspb.AsymmetricDecryptRequest, opts ...gax.CallOption) (*kmspb.AsymmetricDecryptResponse, error)

AsymmetricDecrypt decrypts data that was encrypted with a public key retrieved from [GetPublicKey][google.cloud.kms.v1.KeyManagementService.GetPublicKey] corresponding to a [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion] with [CryptoKey.purpose][google.cloud.kms.v1.CryptoKey.purpose] ASYMMETRIC_DECRYPT.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.AsymmetricDecryptRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.AsymmetricDecrypt(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) AsymmetricSign added in v0.28.0 

func (c *KeyManagementClient) AsymmetricSign(ctx context.Context, req *kmspb.AsymmetricSignRequest, opts ...gax.CallOption) (*kmspb.AsymmetricSignResponse, error)

AsymmetricSign signs data using a [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion] with [CryptoKey.purpose][google.cloud.kms.v1.CryptoKey.purpose] ASYMMETRIC_SIGN, producing a signature that can be verified with the public key retrieved from [GetPublicKey][google.cloud.kms.v1.KeyManagementService.GetPublicKey].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.AsymmetricSignRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.AsymmetricSign(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) Close 

func (c *KeyManagementClient) Close() error

Close closes the connection to the API service. The user should invoke this when the client is no longer required.

func (*KeyManagementClient) Connection 

func (c *KeyManagementClient) Connection() *grpc.ClientConn

Connection returns the client's connection to the API service.

func (*KeyManagementClient) CreateCryptoKey 

func (c *KeyManagementClient) CreateCryptoKey(ctx context.Context, req *kmspb.CreateCryptoKeyRequest, opts ...gax.CallOption) (*kmspb.CryptoKey, error)

CreateCryptoKey create a new [CryptoKey][google.cloud.kms.v1.CryptoKey] within a [KeyRing][google.cloud.kms.v1.KeyRing].

[CryptoKey.purpose][google.cloud.kms.v1.CryptoKey.purpose] and [CryptoKey.version_template.algorithm][google.cloud.kms.v1.CryptoKeyVersionTemplate.algorithm] are required.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.CreateCryptoKeyRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.CreateCryptoKey(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) CreateCryptoKeyVersion 

func (c *KeyManagementClient) CreateCryptoKeyVersion(ctx context.Context, req *kmspb.CreateCryptoKeyVersionRequest, opts ...gax.CallOption) (*kmspb.CryptoKeyVersion, error)

CreateCryptoKeyVersion create a new [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion] in a [CryptoKey][google.cloud.kms.v1.CryptoKey].

The server will assign the next sequential id. If unset, [state][google.cloud.kms.v1.CryptoKeyVersion.state] will be set to [ENABLED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.ENABLED].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.CreateCryptoKeyVersionRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.CreateCryptoKeyVersion(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) CreateKeyRing 

func (c *KeyManagementClient) CreateKeyRing(ctx context.Context, req *kmspb.CreateKeyRingRequest, opts ...gax.CallOption) (*kmspb.KeyRing, error)

CreateKeyRing create a new [KeyRing][google.cloud.kms.v1.KeyRing] in a given Project and Location.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.CreateKeyRingRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.CreateKeyRing(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) CryptoKeyIAM added in v0.33.0 

func (c *KeyManagementClient) CryptoKeyIAM(cryptoKey *kmspb.CryptoKey) *iam.Handle

CryptoKeyIAM returns a handle to inspect and change permissions of a CryptoKey.

func (*KeyManagementClient) Decrypt 

func (c *KeyManagementClient) Decrypt(ctx context.Context, req *kmspb.DecryptRequest, opts ...gax.CallOption) (*kmspb.DecryptResponse, error)

Decrypt decrypts data that was protected by [Encrypt][google.cloud.kms.v1.KeyManagementService.Encrypt]. The [CryptoKey.purpose][google.cloud.kms.v1.CryptoKey.purpose] must be [ENCRYPT_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.DecryptRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.Decrypt(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) DestroyCryptoKeyVersion 

func (c *KeyManagementClient) DestroyCryptoKeyVersion(ctx context.Context, req *kmspb.DestroyCryptoKeyVersionRequest, opts ...gax.CallOption) (*kmspb.CryptoKeyVersion, error)

DestroyCryptoKeyVersion schedule a [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion] for destruction.

Upon calling this method, [CryptoKeyVersion.state][google.cloud.kms.v1.CryptoKeyVersion.state] will be set to [DESTROY_SCHEDULED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.DESTROY_SCHEDULED] and [destroy_time][google.cloud.kms.v1.CryptoKeyVersion.destroy_time] will be set to a time 24 hours in the future, at which point the [state][google.cloud.kms.v1.CryptoKeyVersion.state] will be changed to [DESTROYED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.DESTROYED], and the key material will be irrevocably destroyed.

Before the [destroy_time][google.cloud.kms.v1.CryptoKeyVersion.destroy_time] is reached, [RestoreCryptoKeyVersion][google.cloud.kms.v1.KeyManagementService.RestoreCryptoKeyVersion] may be called to reverse the process.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.DestroyCryptoKeyVersionRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.DestroyCryptoKeyVersion(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) Encrypt 

func (c *KeyManagementClient) Encrypt(ctx context.Context, req *kmspb.EncryptRequest, opts ...gax.CallOption) (*kmspb.EncryptResponse, error)

Encrypt encrypts data, so that it can only be recovered by a call to [Decrypt][google.cloud.kms.v1.KeyManagementService.Decrypt]. The [CryptoKey.purpose][google.cloud.kms.v1.CryptoKey.purpose] must be [ENCRYPT_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.EncryptRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.Encrypt(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) GetCryptoKey 

func (c *KeyManagementClient) GetCryptoKey(ctx context.Context, req *kmspb.GetCryptoKeyRequest, opts ...gax.CallOption) (*kmspb.CryptoKey, error)

GetCryptoKey returns metadata for a given [CryptoKey][google.cloud.kms.v1.CryptoKey], as well as its [primary][google.cloud.kms.v1.CryptoKey.primary] [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.GetCryptoKeyRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.GetCryptoKey(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) GetCryptoKeyVersion 

func (c *KeyManagementClient) GetCryptoKeyVersion(ctx context.Context, req *kmspb.GetCryptoKeyVersionRequest, opts ...gax.CallOption) (*kmspb.CryptoKeyVersion, error)

GetCryptoKeyVersion returns metadata for a given [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.GetCryptoKeyVersionRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.GetCryptoKeyVersion(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) GetKeyRing 

func (c *KeyManagementClient) GetKeyRing(ctx context.Context, req *kmspb.GetKeyRingRequest, opts ...gax.CallOption) (*kmspb.KeyRing, error)

GetKeyRing returns metadata for a given [KeyRing][google.cloud.kms.v1.KeyRing].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.GetKeyRingRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.GetKeyRing(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) GetPublicKey added in v0.28.0 

func (c *KeyManagementClient) GetPublicKey(ctx context.Context, req *kmspb.GetPublicKeyRequest, opts ...gax.CallOption) (*kmspb.PublicKey, error)

GetPublicKey returns the public key for the given [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion]. The [CryptoKey.purpose][google.cloud.kms.v1.CryptoKey.purpose] must be [ASYMMETRIC_SIGN][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ASYMMETRIC_SIGN] or [ASYMMETRIC_DECRYPT][google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose.ASYMMETRIC_DECRYPT].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.GetPublicKeyRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.GetPublicKey(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) KeyRingIAM added in v0.33.0 

func (c *KeyManagementClient) KeyRingIAM(keyRing *kmspb.KeyRing) *iam.Handle

KeyRingIAM returns a handle to inspect and change permissions of a KeyRing.

func (*KeyManagementClient) ListCryptoKeyVersions 

func (c *KeyManagementClient) ListCryptoKeyVersions(ctx context.Context, req *kmspb.ListCryptoKeyVersionsRequest, opts ...gax.CallOption) *CryptoKeyVersionIterator

ListCryptoKeyVersions lists [CryptoKeyVersions][google.cloud.kms.v1.CryptoKeyVersion].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.ListCryptoKeyVersionsRequest{
	// TODO: Fill request struct fields.
}
it := c.ListCryptoKeyVersions(ctx, req)
for {
	resp, err := it.Next()
	if err == iterator.Done {
		break
	}
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*KeyManagementClient) ListCryptoKeys 

func (c *KeyManagementClient) ListCryptoKeys(ctx context.Context, req *kmspb.ListCryptoKeysRequest, opts ...gax.CallOption) *CryptoKeyIterator

ListCryptoKeys lists [CryptoKeys][google.cloud.kms.v1.CryptoKey].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.ListCryptoKeysRequest{
	// TODO: Fill request struct fields.
}
it := c.ListCryptoKeys(ctx, req)
for {
	resp, err := it.Next()
	if err == iterator.Done {
		break
	}
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*KeyManagementClient) ListKeyRings 

func (c *KeyManagementClient) ListKeyRings(ctx context.Context, req *kmspb.ListKeyRingsRequest, opts ...gax.CallOption) *KeyRingIterator

ListKeyRings lists [KeyRings][google.cloud.kms.v1.KeyRing].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.ListKeyRingsRequest{
	// TODO: Fill request struct fields.
}
it := c.ListKeyRings(ctx, req)
for {
	resp, err := it.Next()
	if err == iterator.Done {
		break
	}
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*KeyManagementClient) RestoreCryptoKeyVersion 

func (c *KeyManagementClient) RestoreCryptoKeyVersion(ctx context.Context, req *kmspb.RestoreCryptoKeyVersionRequest, opts ...gax.CallOption) (*kmspb.CryptoKeyVersion, error)

RestoreCryptoKeyVersion restore a [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion] in the [DESTROY_SCHEDULED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.DESTROY_SCHEDULED] state.

Upon restoration of the CryptoKeyVersion, [state][google.cloud.kms.v1.CryptoKeyVersion.state] will be set to [DISABLED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.DISABLED], and [destroy_time][google.cloud.kms.v1.CryptoKeyVersion.destroy_time] will be cleared.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.RestoreCryptoKeyVersionRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.RestoreCryptoKeyVersion(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) UpdateCryptoKey 

func (c *KeyManagementClient) UpdateCryptoKey(ctx context.Context, req *kmspb.UpdateCryptoKeyRequest, opts ...gax.CallOption) (*kmspb.CryptoKey, error)

UpdateCryptoKey update a [CryptoKey][google.cloud.kms.v1.CryptoKey].

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.UpdateCryptoKeyRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.UpdateCryptoKey(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) UpdateCryptoKeyPrimaryVersion 

func (c *KeyManagementClient) UpdateCryptoKeyPrimaryVersion(ctx context.Context, req *kmspb.UpdateCryptoKeyPrimaryVersionRequest, opts ...gax.CallOption) (*kmspb.CryptoKey, error)

UpdateCryptoKeyPrimaryVersion update the version of a [CryptoKey][google.cloud.kms.v1.CryptoKey] that will be used in [Encrypt][google.cloud.kms.v1.KeyManagementService.Encrypt].

Returns an error if called on an asymmetric key.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.UpdateCryptoKeyPrimaryVersionRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.UpdateCryptoKeyPrimaryVersion(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

func (*KeyManagementClient) UpdateCryptoKeyVersion 

func (c *KeyManagementClient) UpdateCryptoKeyVersion(ctx context.Context, req *kmspb.UpdateCryptoKeyVersionRequest, opts ...gax.CallOption) (*kmspb.CryptoKeyVersion, error)

UpdateCryptoKeyVersion update a [CryptoKeyVersion][google.cloud.kms.v1.CryptoKeyVersion]'s metadata.

[state][google.cloud.kms.v1.CryptoKeyVersion.state] may be changed between [ENABLED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.ENABLED] and [DISABLED][google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionState.DISABLED] using this method. See [DestroyCryptoKeyVersion][google.cloud.kms.v1.KeyManagementService.DestroyCryptoKeyVersion] and [RestoreCryptoKeyVersion][google.cloud.kms.v1.KeyManagementService.RestoreCryptoKeyVersion] to move between other states.

Example 
ctx := context.Background()
c, err := kms.NewKeyManagementClient(ctx)
if err != nil {
	// TODO: Handle error.
}

req := &kmspb.UpdateCryptoKeyVersionRequest{
	// TODO: Fill request struct fields.
}
resp, err := c.UpdateCryptoKeyVersion(ctx, req)
if err != nil {
	// TODO: Handle error.
}
// TODO: Use resp.
_ = resp

Output:

type KeyRingIterator 

type KeyRingIterator struct {

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*kmspb.KeyRing, nextPageToken string, err error)
	// contains filtered or unexported fields
}

KeyRingIterator manages a stream of *kmspb.KeyRing.

func (*KeyRingIterator) Next 

func (it *KeyRingIterator) Next() (*kmspb.KeyRing, error)

Next returns the next result. Its second return value is iterator.Done if there are no more results. Once Next returns Done, all subsequent calls will return Done.

func (*KeyRingIterator) PageInfo 

func (it *KeyRingIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

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