Module iu.util.crypt.impl

Package iu.crypt

Class JweRecipientBuilder

java.lang.Object

edu.iu.client.IuJsonBuilder<JweRecipientBuilder>

iu.crypt.CertificateReferenceBuilder<JweRecipientBuilder>

iu.crypt.KeyReferenceBuilder<JweRecipientBuilder>

iu.crypt.JoseBuilder<JweRecipientBuilder>

iu.crypt.JweRecipientBuilder

All Implemented Interfaces:

WebCertificateReference.Builder<JweRecipientBuilder>, WebCryptoHeader.Builder<JweRecipientBuilder>, WebEncryptionRecipient.Builder<JweRecipientBuilder>, WebKeyReference.Builder<JweRecipientBuilder>

public class JweRecipientBuilder
extends JoseBuilder<JweRecipientBuilder>
implements WebEncryptionRecipient.Builder<JweRecipientBuilder>

Builds JWE recipients for JweBuilder

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	JweRecipientBuilder.EncryptedKeyBuilder	Handles ephemeral key-protection parameters.

Constructor Summary

Constructors

Constructor	Description
JweRecipientBuilder(JweBuilder jweBuilder, WebKey.Algorithm algorithm)	Constructor

Method Summary

Modifier and Type	Method	Description
(package private) static byte[]	agreedUponKey(PrivateKey privateKey, PublicKey publicKey, String algorithm, byte[] algId, byte[] uinfo, byte[] vinfo, int keyDataLen)	Computes the agreed-upon key for ECDH key agreement with NIST.SP.800.56C Concat KDF using SHA-256 as the key derivation formula.
(package private) JweRecipientBuilder.EncryptedKeyBuilder	encryptedKeyBuilder()	Gets a builder for completing key protection.
JweBuilder	then()	Returns the WebEncryption.Builder that spawned this builder instance.

Methods inherited from class iu.crypt.JoseBuilder

contentType, copy, crit, key, key, param, param, param, type, wellKnown, wellKnown

Methods inherited from class iu.crypt.KeyReferenceBuilder

algorithm, keyId

Methods inherited from class iu.crypt.CertificateReferenceBuilder

cert, cert, pem, pem, x5t, x5t256

Methods inherited from class edu.iu.client.IuJsonBuilder

build, param, paramNames, toJson

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.iu.crypt.WebCertificateReference.Builder

cert, cert, pem, pem, x5t, x5t256

Methods inherited from interface edu.iu.crypt.WebCryptoHeader.Builder

contentType, crit, key, keyId, param, param, type, wellKnown, wellKnown

Methods inherited from interface edu.iu.crypt.WebEncryptionRecipient.Builder

encrypt, encrypt, encrypt

Constructor Details

JweRecipientBuilder

JweRecipientBuilder(JweBuilder jweBuilder,
 WebKey.Algorithm algorithm)

Constructor

Parameters:

jweBuilder - JWE builder

algorithm - key encryption algorithm

Method Details

agreedUponKey

static byte[] agreedUponKey(PrivateKey privateKey,
 PublicKey publicKey,
 String algorithm,
 byte[] algId,
 byte[] uinfo,
 byte[] vinfo,
 int keyDataLen)

Computes the agreed-upon key for ECDH key agreement with NIST.SP.800.56C Concat KDF using SHA-256 as the key derivation formula.

Parameters:

privateKey - JCE private key

publicKey - JCE public key

algorithm - JCE key agreement algorithm name

algId - JWA algorithm ID

uinfo - PartyUInfo value for Concat KDF

vinfo - PartyVInfo value for Concat KDF

keyDataLen - bit length of desired output key, SuppPubInfo for Concat KDF

Returns:

derived key data

See Also:

• NIST.SP.800-56Ar3
• NIST.SP.800-56Cr2
• RFC-7518 JSON Web Algorithms (JWA) 4.6.2

then

public JweBuilder then()

Description copied from interface: WebEncryptionRecipient.Builder

Returns the WebEncryption.Builder that spawned this builder instance.

Specified by:

then in interface WebEncryptionRecipient.Builder<JweRecipientBuilder>

Returns:

WebEncryption.Builder

encryptedKeyBuilder

JweRecipientBuilder.EncryptedKeyBuilder encryptedKeyBuilder()

Gets a builder for completing key protection.

Returns:

encrypted key builder