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azuziazuzi
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feat: Jwt vc converters
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3 files changed

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‎src/main/java/com/danubetech/verifiablecredentials/jwt/FromJwtConverter.java‎

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@@ -2,6 +2,7 @@
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import com.danubetech.verifiablecredentials.CredentialSubject;
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import com.danubetech.verifiablecredentials.VerifiableCredential;
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import com.danubetech.verifiablecredentials.VerifiableCredentialV2;
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import com.danubetech.verifiablecredentials.VerifiablePresentation;
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import com.danubetech.verifiablecredentials.jsonld.VerifiableCredentialKeywords;
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import com.nimbusds.jwt.JWTClaimsSet;
@@ -107,4 +108,56 @@ public static VerifiablePresentation fromJwtVerifiableCredentialToVerifiablePres
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return verifiablePresentation;
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}
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public static VerifiableCredentialV2 fromJwtVerifiableCredential(JwtVerifiableCredentialV2 jwtVerifiableCredential) {
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VerifiableCredentialV2 payloadVerifiableCredential = VerifiableCredentialV2.fromJson(jwtVerifiableCredential.getPayloadObject().toString());
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CredentialSubject payloadCredentialSubject = payloadVerifiableCredential.getCredentialSubject();
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CredentialSubject.removeFromJsonLdObject(payloadVerifiableCredential);
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VerifiableCredentialV2.Builder<? extends VerifiableCredentialV2.Builder<?>> verifiableCredentialBuilder = VerifiableCredentialV2.builder()
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.base(payloadVerifiableCredential)
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.defaultContexts(false)
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.defaultTypes(false);
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JWTClaimsSet payload = jwtVerifiableCredential.getPayload();
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String jwtId = payload.getJWTID();
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if (jwtId != null && payloadVerifiableCredential.getId() == null) {
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verifiableCredentialBuilder.id(URI.create(jwtId));
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}
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if (payloadCredentialSubject != null) {
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CredentialSubject.Builder<? extends CredentialSubject.Builder<?>> credentialSubjectBuilder = CredentialSubject.builder()
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.base(payloadCredentialSubject);
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String subject = payload.getSubject();
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if (subject != null && payloadCredentialSubject.getId() == null) {
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credentialSubjectBuilder.id(URI.create(subject));
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}
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CredentialSubject credentialSubject = credentialSubjectBuilder.build();
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verifiableCredentialBuilder.credentialSubject(credentialSubject);
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}
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String issuer = payload.getIssuer();
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if (issuer != null && payloadVerifiableCredential.getIssuer() == null) {
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verifiableCredentialBuilder.issuer(URI.create(issuer));
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}
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Date notBeforeTime = payload.getNotBeforeTime();
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if (notBeforeTime != null && payloadVerifiableCredential.getValidFrom() == null) {
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verifiableCredentialBuilder.validFrom(notBeforeTime);
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}
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Date expirationTime = payload.getExpirationTime();
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if (expirationTime != null && payloadVerifiableCredential.getValidUntil() == null) {
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verifiableCredentialBuilder.validUntil(expirationTime);
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}
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return verifiableCredentialBuilder.build();
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}
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}

‎src/main/java/com/danubetech/verifiablecredentials/jwt/JwtVerifiableCredentialV2.java‎

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package com.danubetech.verifiablecredentials.jwt;
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import com.danubetech.verifiablecredentials.VerifiableCredentialV2;
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import com.nimbusds.jose.JWSObject;
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import com.nimbusds.jwt.JWTClaimsSet;
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import com.nimbusds.jwt.SignedJWT;
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import java.text.ParseException;
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import java.util.LinkedHashMap;
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import java.util.Map;
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public class JwtVerifiableCredentialV2 extends JwtWrappingObject<VerifiableCredentialV2> {
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public JwtVerifiableCredentialV2(JWTClaimsSet payload, VerifiableCredentialV2 payloadObject, JWSObject jwsObject, String compactSerialization) {
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super(payload, payloadObject, jwsObject, compactSerialization);
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}
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/*
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* Factory methods
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*/
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public static JwtVerifiableCredentialV2 fromCompactSerialization(String compactSerialization) throws ParseException {
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SignedJWT signedJWT = SignedJWT.parse(compactSerialization);
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JWTClaimsSet jwtPayload = signedJWT.getJWTClaimsSet();
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Map<String, Object> jsonObject = (Map<String, Object>) jwtPayload.getClaims().get(JwtKeywords.JWT_CLAIM_VC);
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if (jsonObject == null) return null;
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VerifiableCredentialV2 payloadVerifiableCredential = VerifiableCredentialV2.fromJsonObject(new LinkedHashMap<>(jsonObject));
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return new JwtVerifiableCredentialV2(jwtPayload, payloadVerifiableCredential, signedJWT, compactSerialization);
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}
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}

‎src/main/java/com/danubetech/verifiablecredentials/jwt/ToJwtConverter.java‎

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import com.danubetech.verifiablecredentials.CredentialSubject;
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import com.danubetech.verifiablecredentials.VerifiableCredential;
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import com.danubetech.verifiablecredentials.VerifiableCredentialV2;
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import com.danubetech.verifiablecredentials.VerifiablePresentation;
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import com.danubetech.verifiablecredentials.jsonld.VerifiableCredentialKeywords;
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import com.nimbusds.jwt.JWTClaimsSet;
@@ -147,4 +148,93 @@ public static JwtVerifiablePresentation toJwtVerifiablePresentation(VerifiablePr
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return toJwtVerifiablePresentation(verifiablePresentation, null);
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}
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/*
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* from JSON-LD to JWT VCDM V2
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*/
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public static JwtVerifiableCredentialV2 toJwtVerifiableCredentialV2(VerifiableCredentialV2 verifiableCredential, String aud, boolean preserveVerifiableCredentialProperties, boolean includeIat) {
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JWTClaimsSet.Builder jwtPayloadBuilder = new JWTClaimsSet.Builder();
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VerifiableCredentialV2 payloadVerifiableCredential = VerifiableCredentialV2.builder()
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.defaultContexts(false)
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.defaultTypes(false)
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.build();
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JsonLDUtils.jsonLdAddAll(payloadVerifiableCredential, verifiableCredential.getJsonObject());
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URI id = verifiableCredential.getId();
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if (id != null) {
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jwtPayloadBuilder.jwtID(id.toString());
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if (!preserveVerifiableCredentialProperties) {
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JsonLDUtils.jsonLdRemove(payloadVerifiableCredential, JsonLDKeywords.JSONLD_TERM_ID);
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}
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}
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CredentialSubject credentialSubject = verifiableCredential.getCredentialSubject();
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if (credentialSubject != null && credentialSubject.getId() != null) {
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jwtPayloadBuilder.subject(credentialSubject.getId().toString());
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if (!preserveVerifiableCredentialProperties) {
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CredentialSubject payloadCredentialSubject = CredentialSubject.builder()
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.base(credentialSubject)
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.build();
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JsonLDUtils.jsonLdRemove(payloadCredentialSubject, JsonLDKeywords.JSONLD_TERM_ID);
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CredentialSubject.removeFromJsonLdObject(payloadVerifiableCredential);
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payloadCredentialSubject.addToJsonLDObject(payloadVerifiableCredential);
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}
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}
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URI issuer = verifiableCredential.getIssuerUri();
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if (issuer != null) {
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jwtPayloadBuilder.issuer(issuer.toString());
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if (!preserveVerifiableCredentialProperties) {
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JsonLDUtils.jsonLdRemove(payloadVerifiableCredential, VerifiableCredentialKeywords.JSONLD_TERM_ISSUER);
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}
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}
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Date issuanceDate = verifiableCredential.getValidFrom();
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if (issuanceDate != null) {
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jwtPayloadBuilder.notBeforeTime(issuanceDate);
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if (includeIat) jwtPayloadBuilder.issueTime(issuanceDate);
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if (!preserveVerifiableCredentialProperties) {
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JsonLDUtils.jsonLdRemove(payloadVerifiableCredential, VerifiableCredentialKeywords.JSONLD_TERM_ISSUANCEDATE);
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}
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}
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Date expirationDate = verifiableCredential.getValidUntil();
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if (expirationDate != null) {
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jwtPayloadBuilder.expirationTime(expirationDate);
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if (!preserveVerifiableCredentialProperties) {
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JsonLDUtils.jsonLdRemove(payloadVerifiableCredential, VerifiableCredentialKeywords.JSONLD_TERM_EXPIRATIONDATE);
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}
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}
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if (aud != null) {
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jwtPayloadBuilder.audience(aud);
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}
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Map<String, Object> vcContent = new LinkedHashMap<>(payloadVerifiableCredential.getJsonObject());
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jwtPayloadBuilder.claim(JwtKeywords.JWT_CLAIM_VC, vcContent);
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JWTClaimsSet jwtPayload = jwtPayloadBuilder.build();
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return new JwtVerifiableCredentialV2(jwtPayload, payloadVerifiableCredential, null, null);
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}
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public static JwtVerifiableCredentialV2 toJwtVerifiableCredentialV2(VerifiableCredentialV2 verifiableCredential, String aud) {
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return toJwtVerifiableCredentialV2(verifiableCredential, null, false, false);
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}
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public static JwtVerifiableCredentialV2 toJwtVerifiableCredentialV2(VerifiableCredentialV2 verifiableCredential, boolean preserveVerifiableCredentialProperties, boolean includeIat) {
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return toJwtVerifiableCredentialV2(verifiableCredential, null, preserveVerifiableCredentialProperties, includeIat);
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}
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public static JwtVerifiableCredentialV2 toJwtVerifiableCredentialV2(VerifiableCredentialV2 verifiableCredential) {
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return toJwtVerifiableCredentialV2(verifiableCredential, null, false, false);
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}
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}

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