# Class Signature (2.94.0)

2.94.0 (latest) 2.92.0 2.89.0 2.88.0 2.86.0 2.84.0 2.83.0 2.82.0 2.81.0 2.79.0 2.77.0 2.76.0 2.75.0 2.74.0 2.73.0 2.71.0 2.69.0 2.68.0 2.65.0 2.64.0 2.63.0 2.61.0 2.60.0 2.59.0 2.58.0 2.57.0 2.56.0 2.55.0 2.54.0 2.53.0 2.52.0 2.50.0 2.49.0 2.48.0 2.47.0 2.46.0 2.45.0 2.44.0 2.43.0 2.42.0 2.41.0 2.40.0 2.38.0 2.37.0 2.36.0 2.35.0 2.34.0 2.33.0 2.32.0 2.31.0 2.30.0 2.29.0 2.28.0 2.25.0 2.24.0 2.23.0 2.22.0 2.21.0 2.20.0 2.19.0 2.18.0 2.17.0 2.16.0 2.15.0 2.14.0 2.13.0 2.12.0 2.10.0 2.9.0 2.8.0 2.7.0 2.6.0 2.5.0 2.4.5 2.3.1 2.2.3 2.1.3

    public final class Signature extends GeneratedMessage implements SignatureOrBuilder

Verifiers (e.g. Kritis implementations) MUST verify signatures
with respect to the trust anchors defined in policy (e.g. a Kritis policy).
Typically this means that the verifier has been configured with a map from
`public_key_id` to public key material (and any required parameters, e.g.
signing algorithm).

In particular, verification implementations MUST NOT treat the signature
`public_key_id` as anything more than a key lookup hint. The `public_key_id`
DOES NOT validate or authenticate a public key; it only provides a mechanism
for quickly selecting a public key ALREADY CONFIGURED on the verifier through
a trusted channel. Verification implementations MUST reject signatures in any
of the following circumstances:

- The `public_key_id` is not recognized by the verifier.
- The public key that `public_key_id` refers to does not verify the
  signature with respect to the payload.

  The `signature` contents SHOULD NOT be "attached" (where the payload is
  included with the serialized `signature` bytes). Verifiers MUST ignore any
  "attached" payload and only verify signatures with respect to explicitly
  provided payload (e.g. a `payload` field on the proto message that holds
  this Signature, or the canonical serialization of the proto message that
  holds this signature).

Protobuf type `grafeas.v1.Signature`

## Inheritance

[Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \> [AbstractMessageLite\<MessageType,BuilderType\>](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.html) \> [AbstractMessage](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html) \> [GeneratedMessage](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.html) \> Signature

## Implements

[SignatureOrBuilder](https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.SignatureOrBuilder)

## Inherited Members

[AbstractMessage.equals(Object)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_equals_java_lang_Object_) [AbstractMessage.findInitializationErrors()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_findInitializationErrors__) [AbstractMessage.getInitializationErrorString()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_getInitializationErrorString__) [AbstractMessage.hashCode()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_hashCode__) 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[AbstractMessageLite.writeDelimitedTo(OutputStream)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.html#com_google_protobuf_AbstractMessageLite_writeDelimitedTo_java_io_OutputStream_) [AbstractMessageLite.writeTo(OutputStream)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.html#com_google_protobuf_AbstractMessageLite_writeTo_java_io_OutputStream_) com.google.protobuf.GeneratedMessage.\<ContainingT,T\>newFileScopedGeneratedExtension(java.lang.Class\<?\>,com.google.protobuf.Message) com.google.protobuf.GeneratedMessage.\<ContainingT,T\>newMessageScopedGeneratedExtension(com.google.protobuf.Message,int,java.lang.Class\<?\>,com.google.protobuf.Message) com.google.protobuf.GeneratedMessage.\<ListT\>makeMutableCopy(ListT) com.google.protobuf.GeneratedMessage.\<ListT\>makeMutableCopy(ListT,int) 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## Static Fields

### PUBLIC_KEY_ID_FIELD_NUMBER

    public static final int PUBLIC_KEY_ID_FIELD_NUMBER

| **Field Value** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

### SIGNATURE_FIELD_NUMBER

    public static final int SIGNATURE_FIELD_NUMBER

| **Field Value** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

## Static Methods

### getDefaultInstance()

    public static Signature getDefaultInstance()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

### getDescriptor()

    public static final Descriptors.Descriptor getDescriptor()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.Descriptors.Descriptor.html` |   |

### newBuilder()

    public static Signature.Builder newBuilder()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature.Builder` |   |

### newBuilder(Signature prototype)

    public static Signature.Builder newBuilder(Signature prototype)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `prototype` | `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature.Builder` |   |

### parseDelimitedFrom(InputStream input)

    public static Signature parseDelimitedFrom(InputStream input)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

    public static Signature parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### parseFrom(byte\[\] data)

    public static Signature parseFrom(byte[] data)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `data` | `byte[]` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException.html` |   |

### parseFrom(byte\[\] data, ExtensionRegistryLite extensionRegistry)

    public static Signature parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `data` | `byte[]` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException.html` |   |

### parseFrom(ByteString data)

    public static Signature parseFrom(ByteString data)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `data` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException.html` |   |

### parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

    public static Signature parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `data` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException.html` |   |

### parseFrom(CodedInputStream input)

    public static Signature parseFrom(CodedInputStream input)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.CodedInputStream.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

    public static Signature parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.CodedInputStream.html` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### parseFrom(InputStream input)

    public static Signature parseFrom(InputStream input)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

    public static Signature parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### parseFrom(ByteBuffer data)

    public static Signature parseFrom(ByteBuffer data)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `data` | `https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException.html` |   |

### parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

    public static Signature parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `data` | `https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException.html` |   |

### parser()

    public static Parser<Signature> parser()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.Parser.html<https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature>` |   |

## Methods

### equals(Object obj)

    public boolean equals(Object obj)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `obj` | `https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [AbstractMessage.equals(Object other)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_equals_java_lang_Object_)

### getDefaultInstanceForType()

    public Signature getDefaultInstanceForType()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature` |   |

### getParserForType()

    public Parser<Signature> getParserForType()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.Parser.html<https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature>` |   |

**Overrides** [GeneratedMessage.getParserForType()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.html#com_google_protobuf_GeneratedMessage_getParserForType__)

### getPublicKeyId()

    public String getPublicKeyId()

The identifier for the public key that verifies this signature.

- The `public_key_id` is required.
- The `public_key_id` SHOULD be an RFC3986 conformant URI.
- When possible, the `public_key_id` SHOULD be an immutable reference,
  such as a cryptographic digest.

  Examples of valid `public_key_id`s:

  OpenPGP V4 public key fingerprint:
- "openpgp4fpr:74FAF3B861BDA0870C7B6DEF607E48D2A663AEEA"
  See <https://www.iana.org/assignments/uri-schemes/prov/openpgp4fpr> for more
  details on this scheme.

  RFC6920 digest-named SubjectPublicKeyInfo (digest of the DER
  serialization):
- "ni:///sha-256;cD9o9Cq6LG3jD0iKXqEi_vdjJGecm_iXkbqVoScViaU"
- "nih:///sha-256;703f68f42aba2c6de30f488a5ea122fef76324679c9bf89791ba95a1271589a5"

`string public_key_id = 2;`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` | The publicKeyId. |

### getPublicKeyIdBytes()

    public ByteString getPublicKeyIdBytes()

The identifier for the public key that verifies this signature.

- The `public_key_id` is required.
- The `public_key_id` SHOULD be an RFC3986 conformant URI.
- When possible, the `public_key_id` SHOULD be an immutable reference,
  such as a cryptographic digest.

  Examples of valid `public_key_id`s:

  OpenPGP V4 public key fingerprint:
- "openpgp4fpr:74FAF3B861BDA0870C7B6DEF607E48D2A663AEEA"
  See <https://www.iana.org/assignments/uri-schemes/prov/openpgp4fpr> for more
  details on this scheme.

  RFC6920 digest-named SubjectPublicKeyInfo (digest of the DER
  serialization):
- "ni:///sha-256;cD9o9Cq6LG3jD0iKXqEi_vdjJGecm_iXkbqVoScViaU"
- "nih:///sha-256;703f68f42aba2c6de30f488a5ea122fef76324679c9bf89791ba95a1271589a5"

`string public_key_id = 2;`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` | The bytes for publicKeyId. |

### getSerializedSize()

    public int getSerializedSize()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [GeneratedMessage.getSerializedSize()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.html#com_google_protobuf_GeneratedMessage_getSerializedSize__)

### getSignature()

    public ByteString getSignature()

The content of the signature, an opaque bytestring.
The payload that this signature verifies MUST be unambiguously provided
with the Signature during verification. A wrapper message might provide
the payload explicitly. Alternatively, a message might have a canonical
serialization that can always be unambiguously computed to derive the
payload.

`bytes signature = 1;`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` | The signature. |

### hashCode()

    public int hashCode()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [AbstractMessage.hashCode()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_hashCode__)

### internalGetFieldAccessorTable()

    protected GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.FieldAccessorTable.html` |   |

**Overrides** [GeneratedMessage.internalGetFieldAccessorTable()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.html#com_google_protobuf_GeneratedMessage_internalGetFieldAccessorTable__)

### isInitialized()

    public final boolean isInitialized()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [GeneratedMessage.isInitialized()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.html#com_google_protobuf_GeneratedMessage_isInitialized__)

### newBuilderForType()

    public Signature.Builder newBuilderForType()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature.Builder` |   |

### newBuilderForType(AbstractMessage.BuilderParent parent)

    protected Signature.Builder newBuilderForType(AbstractMessage.BuilderParent parent)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `parent` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.BuilderParent.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature.Builder` |   |

**Overrides** [AbstractMessage.newBuilderForType(AbstractMessage.BuilderParent parent)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.html#com_google_protobuf_AbstractMessage_newBuilderForType_com_google_protobuf_AbstractMessage_BuilderParent_)

### toBuilder()

    public Signature.Builder toBuilder()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/grafeas/latest/io.grafeas.v1.Signature.Builder` |   |

### writeTo(CodedOutputStream output)

    public void writeTo(CodedOutputStream output)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `output` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.CodedOutputStream.html` |

**Overrides** [GeneratedMessage.writeTo(CodedOutputStream output)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.html#com_google_protobuf_GeneratedMessage_writeTo_com_google_protobuf_CodedOutputStream_)

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |