java.lang.Object
- se.digg.dgc.signatures.cwt.Cwt

```
public class Cwt
extends Object
```
A representation of a CWT according to RFC 8392.

Author:

Martin Lindström (martin@idsec.se), Henrik Bengtsson (extern.henrik.bengtsson@digg.se), Henric Norlander (extern.henric.norlander@digg.se)

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class Cwt.CwtBuilder
A builder for creating Cwt objects.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`EU_DGC_V1_MESSAGE_TAG`	The message tag for eu_dgc_v1 that is added under the HCERT claim.
`static int`	`HCERT_CLAIM_KEY`	HCERT message tag.
`static int`	`MESSAGE_TAG`	The CBOR CWT message tag.

Constructor Summary

Constructors
Constructor Description

Cwt()
Constructor creating an empty CWT.

Cwt(byte[] data)
Constructor creating a CWT from a supplied encoding.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Cwt.CwtBuilder`	`builder()`	Creates a `Cwt.CwtBuilder`.
`static Cwt`	`decode(byte[] data)`	Decodes the supplied data into a Cwt object.
`byte[]`	`encode()`	Gets the binary representation of the CWT.
`List<String>`	`getAudience()`	Gets the values for the "aud" claim
`com.upokecenter.cbor.CBORObject`	`getClaim(int claimKey)`	Gets the claim identified by `claimKey`.
`com.upokecenter.cbor.CBORObject`	`getClaim(String claimKey)`	Gets the claim identified by `claimKey`.
`byte[]`	`getCwtId()`	Gets the value of the "cti" (CWT ID) claim.
`byte[]`	`getDgcV1()`	Gets the CBOR encoding of a DGC v1 payload.
`Instant`	`getExpiration()`	Gets the value of the "exp" (expiration time) claim.
`Instant`	`getIssuedAt()`	Gets the value of the "iat" (issued at) claim.
`String`	`getIssuer()`	Gets the "iss" (issuer) claim.
`Instant`	`getNotBefore()`	Gets the value of the "nbf" (not before) claim.
`String`	`getSubject()`	Gets the "sub" (subject) claim.
`void`	`setAudience(String audience)`	Sets a single value to the "aud" (audience) claim.
`void`	`setAudience(List<String> audiences)`	Sets multiple values to the "aud" (audience) claim.
`void`	`setClaim(int claimKey, byte[] value)`	Sets a claim identified by `claimKey`.
`void`	`setClaim(int claimKey, com.upokecenter.cbor.CBORObject value)`	Sets a claim identified by `claimKey`.
`void`	`setClaim(String claimKey, byte[] value)`	Sets a claim identified by `claimKey`.
`void`	`setClaim(String claimKey, com.upokecenter.cbor.CBORObject value)`	Sets a claim identified by `claimKey`.
`void`	`setCwtId(byte[] cti)`	Sets the "cti" (CWT ID) claim.
`void`	`setDgcV1(byte[] dgcPayload)`	Adds DGC v1 payload.
`void`	`setExpiration(Instant exp)`	Sets the "exp" (expiration time) claim.
`void`	`setIssuedAt(Instant iat)`	Sets the "iat" (issued at) claim.
`void`	`setIssuer(String issuer)`	Sets the "iss" (issuer) claim.
`void`	`setNotBefore(Instant nbf)`	Sets the "nbf" (not before) claim.
`void`	`setSubject(String subject)`	Sets the "sub" (subject) claim.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - HCERT_CLAIM_KEY
```
public static final int HCERT_CLAIM_KEY
```
    HCERT message tag. See https://www.iana.org/assignments/cwt/cwt.xhtml.
    
    See Also:
    
    Constant Field Values
  - EU_DGC_V1_MESSAGE_TAG
```
public static final int EU_DGC_V1_MESSAGE_TAG
```
    The message tag for eu_dgc_v1 that is added under the HCERT claim.
    
    See Also:
    
    Constant Field Values
  - MESSAGE_TAG
```
public static final int MESSAGE_TAG
```
    The CBOR CWT message tag.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Cwt
```
public Cwt()
```
    Constructor creating an empty CWT.
  - Cwt
```
public Cwt(byte[] data)
    throws com.upokecenter.cbor.CBORException
```
    Constructor creating a CWT from a supplied encoding.
    
    Parameters:
    
    data - the encoding
    
    Throws:
    
    com.upokecenter.cbor.CBORException - if the supplied encoding is not a valid CWT
- Method Detail
  - builder
```
public static Cwt.CwtBuilder builder()
```
    Creates a Cwt.CwtBuilder.
    
    Returns:
    
    a CwtBuilder
  - decode
```
public static Cwt decode(byte[] data)
                  throws com.upokecenter.cbor.CBORException
```
    Decodes the supplied data into a Cwt object.
    
    Parameters:
    
    data - the encoded data
    
    Returns:
    
    a Cwt object
    
    Throws:
    
    com.upokecenter.cbor.CBORException - if the supplied encoding is not a valid CWT
  - encode
```
public byte[] encode()
```
    Gets the binary representation of the CWT.
    
    Returns:
    
    a byte array
  - setIssuer
```
public void setIssuer(String issuer)
```
    Sets the "iss" (issuer) claim.
    
    Parameters:
    
    issuer - the issuer value
  - getIssuer
```
public String getIssuer()
```
    Gets the "iss" (issuer) claim.
    
    Returns:
    
    the issuer value, or null
  - setSubject
```
public void setSubject(String subject)
```
    Sets the "sub" (subject) claim.
    
    Parameters:
    
    subject - the subject value
  - getSubject
```
public String getSubject()
```
    Gets the "sub" (subject) claim.
    
    Returns:
    
    the subject value, or null
  - setAudience
```
public void setAudience(String audience)
```
    Sets a single value to the "aud" (audience) claim.
    
    Parameters:
    
    audience - the audience value
  - setAudience
```
public void setAudience(List<String> audiences)
```
    Sets multiple values to the "aud" (audience) claim.
    
    Parameters:
    
    audiences - the values
  - getAudience
```
public List<String> getAudience()
```
    Gets the values for the "aud" claim
    
    Returns:
    
    the value, or null
  - setExpiration
```
public void setExpiration(Instant exp)
```
    Sets the "exp" (expiration time) claim.
    
    Parameters:
    
    exp - the expiration
  - getExpiration
```
public Instant getExpiration()
```
    Gets the value of the "exp" (expiration time) claim.
    
    Returns:
    
    the instant, or null
  - setNotBefore
```
public void setNotBefore(Instant nbf)
```
    Sets the "nbf" (not before) claim.
    
    Parameters:
    
    exp - the not before time
  - getNotBefore
```
public Instant getNotBefore()
```
    Gets the value of the "nbf" (not before) claim.
    
    Returns:
    
    the instant, or null
  - setIssuedAt
```
public void setIssuedAt(Instant iat)
```
    Sets the "iat" (issued at) claim.
    
    Parameters:
    
    iat - the issued at time
  - getIssuedAt
```
public Instant getIssuedAt()
```
    Gets the value of the "iat" (issued at) claim.
    
    Returns:
    
    the instant, or null
  - setCwtId
```
public void setCwtId(byte[] cti)
```
    Sets the "cti" (CWT ID) claim.
    
    Parameters:
    
    cti - the CWT ID
  - getCwtId
```
public byte[] getCwtId()
```
    Gets the value of the "cti" (CWT ID) claim.
    
    Returns:
    
    the ID, or null
  - setDgcV1
```
public void setDgcV1(byte[] dgcPayload)
```
    Adds DGC v1 payload.
    
    Parameters:
    
    dgcPayload - the CBOR encoding of DGC payload
  - getDgcV1
```
public byte[] getDgcV1()
```
    Gets the CBOR encoding of a DGC v1 payload.
    
    Returns:
    
    the CBOR encoding of a DGC v1 payload or null if no payload is stored
  - setClaim
```
public void setClaim(int claimKey,
                     byte[] value)
```
    Sets a claim identified by claimKey.
    
    Parameters:
    
    claimKey - the claim key
    
    value - the claim value (in its CBOR encoding)
  - setClaim
```
public void setClaim(int claimKey,
                     com.upokecenter.cbor.CBORObject value)
```
    Sets a claim identified by claimKey.
    
    Parameters:
    
    claimKey - the claim key
    
    value - the claim value
  - setClaim
```
public void setClaim(String claimKey,
                     byte[] value)
```
    Sets a claim identified by claimKey.
    
    Parameters:
    
    claimKey - the claim key
    
    value - the claim value (in its CBOR encoding)
  - setClaim
```
public void setClaim(String claimKey,
                     com.upokecenter.cbor.CBORObject value)
```
    Sets a claim identified by claimKey.
    
    Parameters:
    
    claimKey - the claim key
    
    value - the claim value
  - getClaim
```
public com.upokecenter.cbor.CBORObject getClaim(int claimKey)
```
    Gets the claim identified by claimKey.
    
    Parameters:
    
    claimKey - the claim key
    
    Returns:
    
    the claim value as a CBORObject, or null
  - getClaim
```
public com.upokecenter.cbor.CBORObject getClaim(String claimKey)
```
    Gets the claim identified by claimKey.
    
    Parameters:
    
    claimKey - the claim key
    
    Returns:
    
    the claim value as a CBORObject, or null
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Constructor	Description
`Cwt()`	Constructor creating an empty CWT.
`Cwt(byte[] data)`	Constructor creating a CWT from a supplied encoding.

Class Cwt

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

HCERT_CLAIM_KEY

EU_DGC_V1_MESSAGE_TAG

MESSAGE_TAG

Constructor Detail

Cwt

Cwt

Method Detail

builder

decode

encode

setIssuer

getIssuer

setSubject

getSubject

setAudience

setAudience

getAudience

setExpiration

getExpiration

setNotBefore

getNotBefore

setIssuedAt

getIssuedAt

setCwtId

getCwtId

setDgcV1

getDgcV1

setClaim

setClaim

setClaim

setClaim

getClaim

getClaim

toString