com.nimbusds.jose
Class JWEHeader

java.lang.Object
  com.nimbusds.jose.Header
      com.nimbusds.jose.CommonSEHeader
          com.nimbusds.jose.JWEHeader

All Implemented Interfaces:

ReadOnlyCommonSEHeader, ReadOnlyHeader, ReadOnlyJWEHeader

public class JWEHeader
extends CommonSEHeader
implements ReadOnlyJWEHeader

JSON Web Encryption (JWE) header.

Supports all reserved header parameters of the JWE specification:

• alg
• enc
• epk
• zip
• jku
• jwk
• x5u
• x5t
• x5c
• kid
• typ
• cty
• apu
• apv
• epu
• epv

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

Example header:

 { 
   "alg" : "RSA1_5",
   "enc" : "A128CBC+HS256"
 }
 

Version:

$version$ (2013-01-08)

Author:

Vladimir Dzhuvinov

Field Summary

Fields inherited from class com.nimbusds.jose.Header

alg

Constructor Summary

JWEHeader(JWEAlgorithm alg, EncryptionMethod enc)
Creates a new JSON Web Encryption (JWE) header.

Method Summary

Base64URL	getAgreementPartyUInfo() Gets the agreement PartyUInfo (apu) parameter.
Base64URL	getAgreementPartyVInfo() Gets the agreement PartyVInfo (apv) parameter.
JWEAlgorithm	getAlgorithm() Gets the algorithm (alg) parameter.
CompressionAlgorithm	getCompressionAlgorithm() Gets the compression algorithm (zip) parameter.
EncryptionMethod	getEncryptionMethod() Gets the encryption method (enc) parameter.
Base64URL	getEncryptionPartyUInfo() Gets the encryption PartyUInfo (epu) parameter.
Base64URL	getEncryptionPartyVInfo() Gets the encryption PartyVInfo (epv) parameter.
ECKey	getEphemeralPublicKey() Gets the Ephemeral Public Key (epk) parameter.
Set<String>	getIncludedParameters() Gets the names of all included parameters (reserved and custom) in the header instance.
static Set<String>	getReservedParameterNames() Gets the reserved parameter names for JWE headers.
static JWEHeader	parse(Base64URL base64URL) Parses a JWE header from the specified Base64URL.
static JWEHeader	parse(net.minidev.json.JSONObject json) Parses a JWE header from the specified JSON object.
static JWEHeader	parse(String s) Parses a JWE header from the specified JSON string.
void	setAgreementPartyUInfo(Base64URL apu) Sets the agreement PartyUInfo (apu) parameter.
void	setAgreementPartyVInfo(Base64URL apv) Sets the agreement PartyVInfo (apv) parameter.
void	setCompressionAlgorithm(CompressionAlgorithm zip) Sets the compression algorithm (zip) parameter.
void	setCustomParameter(String name, Object value) Sets a custom (non-reserved) parameter.
void	setEncryptionPartyUInfo(Base64URL epu) Sets the encryption PartyUInfo (epu) parameter.
void	setEncryptionPartyVInfo(Base64URL epv) Sets the encryption PartyVInfo (epv) parameter.
void	setEphemeralPublicKey(ECKey epk) Sets the Ephemeral Public Key (epk) parameter.
net.minidev.json.JSONObject	toJSONObject() Returns a JSON object representation of the header.

Methods inherited from class com.nimbusds.jose.CommonSEHeader

getJWK, getJWKURL, getKeyID, getX509CertChain, getX509CertThumbprint, getX509CertURL, parseX509CertChain, setJWK, setJWKURL, setKeyID, setX509CertChain, setX509CertThumbprint, setX509CertURL

Methods inherited from class com.nimbusds.jose.Header

getContentType, getCustomParameter, getCustomParameters, getType, parseAlgorithm, setContentType, setCustomParameters, setType, toBase64URL, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.nimbusds.jose.ReadOnlyCommonSEHeader

getJWK, getJWKURL, getKeyID, getX509CertChain, getX509CertThumbprint, getX509CertURL

Methods inherited from interface com.nimbusds.jose.ReadOnlyHeader

getContentType, getCustomParameter, getCustomParameters, getType, toBase64URL

Constructor Detail

JWEHeader

public JWEHeader(JWEAlgorithm alg,
                 EncryptionMethod enc)

Creates a new JSON Web Encryption (JWE) header.

Parameters:

alg - The JWE algorithm parameter. Must not be null.

enc - The encryption method parameter. Must not be null.

Method Detail

getReservedParameterNames

public static Set<String> getReservedParameterNames()

Gets the reserved parameter names for JWE headers.

Returns:

The reserved parameter names, as an unmodifiable set.

getAlgorithm

public JWEAlgorithm getAlgorithm()

Description copied from interface: ReadOnlyJWEHeader

Gets the algorithm (alg) parameter.

Specified by:

getAlgorithm in interface ReadOnlyHeader

Specified by:

getAlgorithm in interface ReadOnlyJWEHeader

Returns:

The algorithm parameter.

getEncryptionMethod

public EncryptionMethod getEncryptionMethod()

Description copied from interface: ReadOnlyJWEHeader

Gets the encryption method (enc) parameter.

Specified by:

getEncryptionMethod in interface ReadOnlyJWEHeader

Returns:

The encryption method parameter.

getEphemeralPublicKey

public ECKey getEphemeralPublicKey()

Description copied from interface: ReadOnlyJWEHeader

Gets the Ephemeral Public Key (epk) parameter.

Specified by:

getEphemeralPublicKey in interface ReadOnlyJWEHeader

Returns:

The Ephemeral Public Key parameter, null if not specified.

setEphemeralPublicKey

public void setEphemeralPublicKey(ECKey epk)

Sets the Ephemeral Public Key (epk) parameter.

Parameters:

epk - The Ephemeral Public Key parameter, null if not specified.

getCompressionAlgorithm

public CompressionAlgorithm getCompressionAlgorithm()

Description copied from interface: ReadOnlyJWEHeader

Gets the compression algorithm (zip) parameter.

Specified by:

getCompressionAlgorithm in interface ReadOnlyJWEHeader

Returns:

The compression algorithm parameter, null if not specified.

setCompressionAlgorithm

public void setCompressionAlgorithm(CompressionAlgorithm zip)

Sets the compression algorithm (zip) parameter.

Parameters:

zip - The compression algorithm parameter, null if not specified.

getAgreementPartyUInfo

public Base64URL getAgreementPartyUInfo()

Description copied from interface: ReadOnlyJWEHeader

Gets the agreement PartyUInfo (apu) parameter.

Specified by:

getAgreementPartyUInfo in interface ReadOnlyJWEHeader

Returns:

The agreement PartyUInfo parameter, null if not specified.

setAgreementPartyUInfo

public void setAgreementPartyUInfo(Base64URL apu)

Sets the agreement PartyUInfo (apu) parameter.

Parameters:

apu - The agreement PartyUInfo parameter, null if not specified.

getAgreementPartyVInfo

public Base64URL getAgreementPartyVInfo()

Description copied from interface: ReadOnlyJWEHeader

Gets the agreement PartyVInfo (apv) parameter.

Specified by:

getAgreementPartyVInfo in interface ReadOnlyJWEHeader

Returns:

The agreement PartyVInfo parameter, null if not specified.

setAgreementPartyVInfo

public void setAgreementPartyVInfo(Base64URL apv)

Sets the agreement PartyVInfo (apv) parameter.

Parameters:

apv - The agreement PartyVInfo parameter, null if not specified.

getEncryptionPartyUInfo

public Base64URL getEncryptionPartyUInfo()

Description copied from interface: ReadOnlyJWEHeader

Gets the encryption PartyUInfo (epu) parameter.

Specified by:

getEncryptionPartyUInfo in interface ReadOnlyJWEHeader

Returns:

The encryption PartyUInfo parameter, null if not specified.

setEncryptionPartyUInfo

public void setEncryptionPartyUInfo(Base64URL epu)

Sets the encryption PartyUInfo (epu) parameter.

Parameters:

epu - The encryption PartyUInfo parameter, null if not specified.

getEncryptionPartyVInfo

public Base64URL getEncryptionPartyVInfo()

Description copied from interface: ReadOnlyJWEHeader

Gets the encryption PartyVInfo (epv) parameter.

Specified by:

getEncryptionPartyVInfo in interface ReadOnlyJWEHeader

Returns:

The encryption PartyVInfo parameter, null if not specified.

setEncryptionPartyVInfo

public void setEncryptionPartyVInfo(Base64URL epv)

Sets the encryption PartyVInfo (epv) parameter.

Parameters:

epv - The encryption PartyVInfo parameter, null if not specified.

setCustomParameter

public void setCustomParameter(String name,
                               Object value)

Description copied from class: Header

Sets a custom (non-reserved) parameter. Callers and extending classes should ensure the parameter name doesn't match a reserved parameter name.

Overrides:

setCustomParameter in class Header

Parameters:

name - The name of the custom parameter. Must not match a reserved parameter name and must not be null.

value - The value of the custom parameter, should map to a valid JSON entity, null if not specified.

Throws:

IllegalArgumentException - If the specified parameter name matches a reserved parameter name.

getIncludedParameters

public Set<String> getIncludedParameters()

Description copied from interface: ReadOnlyHeader

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

Specified by:

getIncludedParameters in interface ReadOnlyHeader

Returns:

The included parameters.

toJSONObject

public net.minidev.json.JSONObject toJSONObject()

Description copied from interface: ReadOnlyHeader

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 reserved ones.

Specified by:

toJSONObject in interface ReadOnlyHeader

Overrides:

toJSONObject in class CommonSEHeader

Returns:

The JSON object representation of the header.

parse

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

Parses a JWE header from the specified JSON object.

Parameters:

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

Returns:

The JWE header.

Throws:

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

parse

public static JWEHeader parse(String s)
                       throws ParseException

Parses a JWE header from the specified JSON string.

Parameters:

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

Returns:

The JWE header.

Throws:

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

parse

public static JWEHeader parse(Base64URL base64URL)
                       throws ParseException

Parses a JWE header from the specified Base64URL.

Parameters:

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

Returns:

The JWE header.

Throws:

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