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106 changes: 106 additions & 0 deletions
106
...va/org/eclipse/tractusx/managedidentitywallets/service/JwtPresentationFactoryService.java
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| /* | ||
| * ******************************************************************************* | ||
| * Copyright (c) 2021,2024 Contributors to the Eclipse Foundation | ||
| * | ||
| * See the NOTICE file(s) distributed with this work for additional | ||
| * information regarding copyright ownership. | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Apache License, Version 2.0 which is available at | ||
| * https://www.apache.org/licenses/LICENSE-2.0. | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | ||
| * License for the specific language governing permissions and limitations | ||
| * under the License. | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * ****************************************************************************** | ||
| */ | ||
|
|
||
| package org.eclipse.tractusx.managedidentitywallets.service; | ||
|
|
||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.nimbusds.jose.Algorithm; | ||
| import com.nimbusds.jose.JOSEObjectType; | ||
| import com.nimbusds.jose.JWSAlgorithm; | ||
| import com.nimbusds.jose.JWSHeader; | ||
| import com.nimbusds.jose.JWSSigner; | ||
| import com.nimbusds.jose.crypto.ECDSASigner; | ||
| import com.nimbusds.jose.jwk.ECKey; | ||
| import com.nimbusds.jose.util.Base64URL; | ||
| import com.nimbusds.jwt.JWTClaimsSet; | ||
| import com.nimbusds.jwt.SignedJWT; | ||
| import lombok.RequiredArgsConstructor; | ||
| import org.eclipse.tractusx.ssi.lib.model.did.Did; | ||
| import org.eclipse.tractusx.ssi.lib.model.verifiable.credential.VerifiableCredential; | ||
| import org.eclipse.tractusx.ssi.lib.model.verifiable.presentation.VerifiablePresentation; | ||
| import org.eclipse.tractusx.ssi.lib.model.verifiable.presentation.VerifiablePresentationBuilder; | ||
| import org.eclipse.tractusx.ssi.lib.serialization.jsonLd.JsonLdSerializer; | ||
| import org.eclipse.tractusx.ssi.lib.serialization.jwt.SerializedVerifiablePresentation; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import java.io.IOException; | ||
| import java.net.URI; | ||
| import java.security.interfaces.ECPrivateKey; | ||
| import java.util.Date; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.UUID; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| @RequiredArgsConstructor | ||
| public class JwtPresentationFactoryService { | ||
| private static final Logger log = LoggerFactory.getLogger(JwtPresentationFactoryService.class); | ||
| private final JsonLdSerializer jsonLdSerializer; | ||
| private final Did agentDid; | ||
|
|
||
| public JwtPresentationFactoryService(Did agentDid, JsonLdSerializer jsonLdSerializer) { | ||
| this.agentDid = agentDid; | ||
| this.jsonLdSerializer = jsonLdSerializer; | ||
| } | ||
|
|
||
| public SignedJWT createPresentation(Did issuer, List<VerifiableCredential> credentials, String audience, ECPrivateKey ecPrivateKey) throws IOException { | ||
| VerifiablePresentationBuilder verifiablePresentationBuilder = new VerifiablePresentationBuilder(); | ||
| URI uri = agentDid.toUri(); | ||
| VerifiablePresentation verifiablePresentation = verifiablePresentationBuilder.id(URI.create("" + uri + "#" + UUID.randomUUID())).type(List.of("VerifiablePresentation")).verifiableCredentials(credentials).build(); | ||
| SerializedVerifiablePresentation serializedVerifiablePresentation = jsonLdSerializer.serializePresentation(verifiablePresentation); | ||
| return create(issuer, audience, serializedVerifiablePresentation, ecPrivateKey); | ||
| } | ||
|
|
||
| public SignedJWT create(Did didIssuer, String audience, SerializedVerifiablePresentation serializedPresentation, ECPrivateKey ecPrivateKey) throws IOException { | ||
| try { | ||
| String issuer = didIssuer.toString(); | ||
| String subject = didIssuer.toString(); | ||
| Map<String, Object> vp = (Map)(new ObjectMapper()).readValue(serializedPresentation.getJson(), HashMap.class); | ||
| JWTClaimsSet claimsSet = (new JWTClaimsSet.Builder()).issuer(issuer).subject(subject).audience(audience) | ||
| .claim("vp", vp).expirationTime(new Date((new Date()).getTime() + 60000L)).jwtID(UUID.randomUUID().toString()).build(); | ||
| return createSignedES256KJwt(ecPrivateKey, claimsSet, issuer); | ||
| } catch (Exception ex) { | ||
| log.error(ex.toString()); | ||
| throw ex; | ||
| } | ||
| } | ||
|
|
||
| private static SignedJWT createSignedES256KJwt(ECPrivateKey ecPrivateKey, JWTClaimsSet claimsSet, String issuer) { | ||
| try { | ||
| JWSSigner signer = new ECDSASigner(ecPrivateKey); | ||
| if (!signer.supportedJWSAlgorithms().contains(JWSAlgorithm.ES256K)) { | ||
| throw new RuntimeException(String.format("Invalid signing method. Supported signing methods: %s", signer.supportedJWSAlgorithms().stream().map(Algorithm::getName).collect(Collectors.joining(", ")))); | ||
| } else { | ||
| JWSAlgorithm algorithm = JWSAlgorithm.ES256K; | ||
| JOSEObjectType type = JOSEObjectType.JWT; | ||
| JWSHeader header = new JWSHeader(algorithm, type, null, null, null, null, null, null, null, null, issuer, true, (Map)null, (Base64URL)null); | ||
| SignedJWT vc = new SignedJWT(header, claimsSet); | ||
| vc.sign(signer); | ||
| return vc; | ||
| } | ||
| } catch (Exception e) { | ||
| log.error(e.toString()); | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
| } |
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