Package com.nimbusds.jose

Class JWEHeader

java.lang.Object
com.nimbusds.jose.Header
com.nimbusds.jose.JWEHeader
All Implemented Interfaces:
Serializable
@Immutable public final class JWEHeader extends Header
JSON Web Encryption (JWE) header. This class is immutable.

Supports the following registered header parameters:

  • alg
  • enc
  • epk
  • zip
  • jku
  • jwk
  • x5u
  • x5t
  • x5t#S256
  • x5c
  • kid
  • typ
  • cty
  • crit
  • apu
  • apv
  • p2s
  • p2c
  • iv
  • skid
  • authTag

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

Example header: 

 { 
   "alg" : "RSA1_5",
   "enc" : "A128CBC-HS256"
 }
Version:
2022-03-07
Author:
Vladimir Dzhuvinov
See Also:

  • Constructor Details

    • JWEHeader

      public JWEHeader(EncryptionMethod enc)
      Creates a new minimal JSON Web Encryption (JWE) header.
      Parameters:
      enc - The encryption method parameter. Must not be null.

    • JWEHeader

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

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

      Parameters:
      alg - The JWE algorithm parameter. Must not be "none" or null.
      enc - The encryption method parameter. Must not be null.

    • JWEHeader

      public JWEHeader(Algorithm alg, EncryptionMethod enc, JOSEObjectType typ, String cty, Set<String> crit, URI jku, JWK jwk, URI x5u, Base64URL x5t, Base64URL x5t256, List<Base64> x5c, String kid, JWK epk, CompressionAlgorithm zip, Base64URL apu, Base64URL apv, Base64URL p2s, int p2c, Base64URL iv, Base64URL tag, String skid, Map<String,Object> customParams, Base64URL parsedBase64URL)
      Creates a new JSON Web Encryption (JWE) header.

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

      Parameters:
      alg - The JWE algorithm (alg) parameter. null if not specified.
      enc - The encryption method parameter. Must not be 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.
      epk - The Ephemeral Public Key (epk) parameter, null if not specified.
      zip - The compression algorithm (zip) parameter, null if not specified.
      apu - The agreement PartyUInfo (apu) parameter, null if not specified.
      apv - The agreement PartyVInfo (apv) parameter, null if not specified.
      p2s - The PBES2 salt (p2s) parameter, null if not specified.
      p2c - The PBES2 count (p2c) parameter, zero if not specified. Must not be negative.
      iv - The initialisation vector (iv) parameter, null if not specified.
      tag - The authentication tag (tag) parameter, null if not specified.
      skid - The sender key ID (skid) 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.

    • JWEHeader

      public JWEHeader(JWEHeader jweHeader)
      Deep copy constructor.
      Parameters:
      jweHeader - The JWE header to copy. Must not be null.

  • Method Details

    • getRegisteredParameterNames

      public static Set<String> getRegisteredParameterNames()
      Gets the registered parameter names for JWE headers.
      Returns:
      The registered parameter names, as an unmodifiable set.

    • getAlgorithm

      public JWEAlgorithm getAlgorithm()
      Gets the algorithm (alg) parameter.
      Overrides:
      getAlgorithm in class Header
      Returns:
      The algorithm parameter.

    • getEncryptionMethod

      public EncryptionMethod getEncryptionMethod()
      Gets the encryption method (enc) parameter.
      Returns:
      The encryption method parameter.

    • getEphemeralPublicKey

      public JWK getEphemeralPublicKey()
      Gets the Ephemeral Public Key (epk) parameter.
      Returns:
      The Ephemeral Public Key parameter, null if not specified.

    • getCompressionAlgorithm

      public CompressionAlgorithm getCompressionAlgorithm()
      Gets the compression algorithm (zip) parameter.
      Returns:
      The compression algorithm parameter, null if not specified.

    • getAgreementPartyUInfo

      public Base64URL getAgreementPartyUInfo()
      Gets the agreement PartyUInfo (apu) parameter.
      Returns:
      The agreement PartyUInfo parameter, null if not specified.

    • getAgreementPartyVInfo

      public Base64URL getAgreementPartyVInfo()
      Gets the agreement PartyVInfo (apv) parameter.
      Returns:
      The agreement PartyVInfo parameter, null if not specified.

    • getPBES2Salt

      public Base64URL getPBES2Salt()
      Gets the PBES2 salt (p2s) parameter.
      Returns:
      The PBES2 salt parameter, null if not specified.

    • getPBES2Count

      public int getPBES2Count()
      Gets the PBES2 count (p2c) parameter.
      Returns:
      The PBES2 count parameter, zero if not specified.

    • getIV

      public Base64URL getIV()
      Gets the initialisation vector (iv) parameter.
      Returns:
      The initialisation vector, null if not specified.

    • getAuthTag

      public Base64URL getAuthTag()
      Gets the authentication tag (tag) parameter.
      Returns:
      The authentication tag, null if not specified.

    • getSenderKeyID

      public String getSenderKeyID()
      Gets the sender key ID (skid) parameter.
      Returns:
      The sender key ID, 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.
      Returns:
      The included parameters.

    • toJSONObject

      public Map<String,Object> 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.
      Returns:
      The JSON object representation of the header.

    • parse

      public static JWEHeader parse(Map<String,Object> jsonObject) throws ParseException
      Parses a JWE header from the specified JSON object.
      Parameters:
      jsonObject - 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(Map<String,Object> jsonObject, Base64URL parsedBase64URL) throws ParseException
      Parses a JWE 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 JWE header.
      Throws:
      ParseException - If the specified JSON object doesn't represent a valid JWE header.

    • parse

      public static JWEHeader parse(String jsonString) throws ParseException
      Parses a JWE header from the specified JSON object string.
      Parameters:
      jsonString - The JSON object 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(String jsonString, Base64URL parsedBase64URL) throws ParseException
      Parses a JWE 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 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.

    • getJWKURL

      public URI getJWKURL()
      Gets the public JSON Web Key (JWK) Set URL (jku) parameter.
      Returns:
      The public JSON Web Key (JWK) Set URL parameter, null if not specified.

    • getJWK

      public JWK getJWK()
      Gets the public JSON Web Key (JWK) (jwk) parameter.
      Returns:
      The public 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

      @Deprecated public Base64URL getX509CertThumbprint()
      Deprecated.
      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.