com.nimbusds.jose

Class JWSHeader

java.lang.Object

com.nimbusds.jose.Header

com.nimbusds.jose.JWSHeader

All Implemented Interfaces:

Serializable

@Immutable
public final class JWSHeader
extends Header

JSON Web Signature (JWS) header. This class is immutable.

Supports all registered header parameters of the JWS specification:

• alg
• jku
• jwk
• x5u
• x5t
• x5t#S256
• x5c
• kid
• typ
• cty
• crit

The header may also include custom parameters; these will be serialised and parsed along the registered ones.

Example header of a JSON Web Signature (JWS) object using the HMAC SHA-256 algorithm:

 {
   "alg" : "HS256"
 }
 

Version:

2015-04-15

Author:

Vladimir Dzhuvinov

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JWSHeader.Builder Builder for constructing JSON Web Signature (JWS) headers.

Constructor Summary

Constructors

Constructor and Description
JWSHeader(JWSAlgorithm alg) Creates a new minimal JSON Web Signature (JWS) header.
JWSHeader(JWSAlgorithm alg, JOSEObjectType typ, String cty, Set<String> crit, URI jku, JWK jwk, URI x5u, Base64URL x5t, Base64URL x5t256, List<Base64> x5c, String kid, Map<String,Object> customParams, Base64URL parsedBase64URL) Creates a new JSON Web Signature (JWS) header.
JWSHeader(JWSHeader jwsHeader) Deep copy constructor.

Method Summary

Modifier and Type	Method and Description
JWSAlgorithm	getAlgorithm() Gets the algorithm (alg) parameter.
Set<String>	getIncludedParams() Gets the names of all included parameters (registered and custom) in the header instance.
JWK	getJWK() Gets the JSON Web Key (JWK) (jwk) parameter.
URI	getJWKURL() Gets the JSON Web Key (JWK) Set URL (jku) parameter.
String	getKeyID() Gets the key ID (kid) parameter.
static Set<String>	getRegisteredParameterNames() Gets the registered parameter names for JWS headers.
List<Base64>	getX509CertChain() Gets the X.509 certificate chain (x5c) parameter corresponding to the key used to sign or encrypt the JWS / JWE object.
Base64URL	getX509CertSHA256Thumbprint() Gets the X.509 certificate SHA-256 thumbprint (x5t#S256) parameter.
Base64URL	getX509CertThumbprint() Gets the X.509 certificate SHA-1 thumbprint (x5t) parameter.
URI	getX509CertURL() Gets the X.509 certificate URL (x5u) parameter.
static JWSHeader	parse(Base64URL base64URL) Parses a JWS header from the specified Base64URL.
static JWSHeader	parse(net.minidev.json.JSONObject jsonObject) Parses a JWS header from the specified JSON object.
static JWSHeader	parse(net.minidev.json.JSONObject jsonObject, Base64URL parsedBase64URL) Parses a JWS header from the specified JSON object.
static JWSHeader	parse(String jsonString) Parses a JWS header from the specified JSON object string.
static JWSHeader	parse(String jsonString, Base64URL parsedBase64URL) Parses a JWS header from the specified JSON object string.
net.minidev.json.JSONObject	toJSONObject() Returns a JSON object representation of the header.

Methods inherited from class com.nimbusds.jose.Header

getContentType, getCriticalParams, getCustomParam, getCustomParams, getParsedBase64URL, getType, parseAlgorithm, toBase64URL, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

JWSHeader

public JWSHeader(JWSAlgorithm alg)

Creates a new minimal JSON Web Signature (JWS) header.

Note: Use PlainHeader to create a header with algorithm none.

Parameters:

alg - The JWS algorithm (alg) parameter. Must not be "none" or null.

JWSHeader

public JWSHeader(JWSAlgorithm alg,
                 JOSEObjectType typ,
                 String cty,
                 Set<String> crit,
                 URI jku,
                 JWK jwk,
                 URI x5u,
                 Base64URL x5t,
                 Base64URL x5t256,
                 List<Base64> x5c,
                 String kid,
                 Map<String,Object> customParams,
                 Base64URL parsedBase64URL)

Creates a new JSON Web Signature (JWS) header.

Note: Use PlainHeader to create a header with algorithm none.

Parameters:

alg - The JWS algorithm (alg) parameter. Must not be "none" or null.

typ - The type (typ) parameter, null if not specified.

cty - The content type (cty) parameter, null if not specified.

crit - The names of the critical header (crit) parameters, empty set or null if none.

jku - The JSON Web Key (JWK) Set URL (jku) parameter, null if not specified.

jwk - The X.509 certificate URL (jwk) parameter, null if not specified.

x5u - The X.509 certificate URL parameter (x5u), null if not specified.

x5t - The X.509 certificate SHA-1 thumbprint (x5t) parameter, null if not specified.

x5t256 - The X.509 certificate SHA-256 thumbprint (x5t#S256) parameter, null if not specified.

x5c - The X.509 certificate chain (x5c) parameter, null if not specified.

kid - The key ID (kid) parameter, null if not specified.

customParams - The custom parameters, empty map or null if none.

parsedBase64URL - The parsed Base64URL, null if the header is created from scratch.

JWSHeader

public JWSHeader(JWSHeader jwsHeader)

Deep copy constructor.

Parameters:

jwsHeader - The JWS header to copy. Must not be null.

Method Detail

getRegisteredParameterNames

public static Set<String> getRegisteredParameterNames()

Gets the registered parameter names for JWS headers.

Returns:

The registered parameter names, as an unmodifiable set.

getAlgorithm

public JWSAlgorithm getAlgorithm()

Gets the algorithm (alg) parameter.

Overrides:

getAlgorithm in class Header

Returns:

The algorithm parameter.

parse

public static JWSHeader parse(net.minidev.json.JSONObject jsonObject)
                       throws ParseException

Parses a JWS header from the specified JSON object.

Parameters:

jsonObject - The JSON object to parse. Must not be null.

Returns:

The JWS header.

Throws:

ParseException - If the specified JSON object doesn't represent a valid JWS header.

parse

public static JWSHeader parse(net.minidev.json.JSONObject jsonObject,
                              Base64URL parsedBase64URL)
                       throws ParseException

Parses a JWS header from the specified JSON object.

Parameters:

jsonObject - The JSON object to parse. Must not be null.

parsedBase64URL - The original parsed Base64URL, null if not applicable.

Returns:

The JWS header.

Throws:

ParseException - If the specified JSON object doesn't represent a valid JWS header.

parse

public static JWSHeader parse(String jsonString)
                       throws ParseException

Parses a JWS header from the specified JSON object string.

Parameters:

jsonString - The JSON string to parse. Must not be null.

Returns:

The JWS header.

Throws:

ParseException - If the specified JSON object string doesn't represent a valid JWS header.

parse

public static JWSHeader parse(String jsonString,
                              Base64URL parsedBase64URL)
                       throws ParseException

Parses a JWS header from the specified JSON object string.

Parameters:

jsonString - The JSON string to parse. Must not be null.

parsedBase64URL - The original parsed Base64URL, null if not applicable.

Returns:

The JWS header.

Throws:

ParseException - If the specified JSON object string doesn't represent a valid JWS header.

parse

public static JWSHeader parse(Base64URL base64URL)
                       throws ParseException

Parses a JWS header from the specified Base64URL.

Parameters:

base64URL - The Base64URL to parse. Must not be null.

Returns:

The JWS header.

Throws:

ParseException - If the specified Base64URL doesn't represent a valid JWS header.

getJWKURL

public URI getJWKURL()

Gets the JSON Web Key (JWK) Set URL (jku) parameter.

Returns:

The JSON Web Key (JWK) Set URL parameter, null if not specified.

getJWK

public JWK getJWK()

Gets the JSON Web Key (JWK) (jwk) parameter.

Returns:

The JSON Web Key (JWK) parameter, null if not specified.

getX509CertURL

public URI getX509CertURL()

Gets the X.509 certificate URL (x5u) parameter.

Returns:

The X.509 certificate URL parameter, null if not specified.

getX509CertThumbprint

public Base64URL getX509CertThumbprint()

Gets the X.509 certificate SHA-1 thumbprint (x5t) parameter.

Returns:

The X.509 certificate SHA-1 thumbprint parameter, null if not specified.

getX509CertSHA256Thumbprint

public Base64URL getX509CertSHA256Thumbprint()

Gets the X.509 certificate SHA-256 thumbprint (x5t#S256) parameter.

Returns:

The X.509 certificate SHA-256 thumbprint parameter, null if not specified.

getX509CertChain

public List<Base64> getX509CertChain()

Gets the X.509 certificate chain (x5c) parameter corresponding to the key used to sign or encrypt the JWS / JWE object.

Returns:

The X.509 certificate chain parameter as a unmodifiable list, null if not specified.

getKeyID

public String getKeyID()

Gets the key ID (kid) parameter.

Returns:

The key ID parameter, null if not specified.

getIncludedParams

public Set<String> getIncludedParams()

Description copied from class: Header

Gets the names of all included parameters (registered and custom) in the header instance.

Overrides:

getIncludedParams in class Header

Returns:

The included parameters.

toJSONObject

public net.minidev.json.JSONObject toJSONObject()

Description copied from class: Header

Returns a JSON object representation of the header. All custom parameters are included if they serialise to a JSON entity and their names don't conflict with the registered ones.

Overrides:

toJSONObject in class Header

Returns:

The JSON object representation of the header.