diff options
Diffstat (limited to 'eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/JoseUtils.java')
| -rw-r--r-- | eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/JoseUtils.java | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/JoseUtils.java b/eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/JoseUtils.java new file mode 100644 index 00000000..a67f3523 --- /dev/null +++ b/eaaf_core_utils/src/main/java/at/gv/egiz/eaaf/core/impl/utils/JoseUtils.java @@ -0,0 +1,373 @@ +package at.gv.egiz.eaaf.core.impl.utils; + +import java.io.IOException; +import java.security.Key; +import java.security.KeyFactory; +import java.security.KeyStore; +import java.security.NoSuchAlgorithmException; +import java.security.Provider; +import java.security.PublicKey; +import java.security.cert.CertificateEncodingException; +import java.security.cert.X509Certificate; +import java.security.interfaces.ECPrivateKey; +import java.security.interfaces.ECPublicKey; +import java.security.interfaces.RSAPrivateKey; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.PKCS8EncodedKeySpec; +import java.security.spec.X509EncodedKeySpec; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; + +import javax.annotation.Nonnull; + +import org.apache.commons.lang3.StringUtils; +import org.bouncycastle.jce.provider.BouncyCastleProvider; +import org.jose4j.jca.ProviderContext; +import org.jose4j.jwa.AlgorithmConstraints; +import org.jose4j.jws.AlgorithmIdentifiers; +import org.jose4j.jws.JsonWebSignature; +import org.jose4j.jwx.Headers; +import org.jose4j.jwx.JsonWebStructure; +import org.jose4j.keys.resolvers.X509VerificationKeyResolver; +import org.jose4j.lang.JoseException; +import org.springframework.util.Base64Utils; + +import at.gv.egiz.eaaf.core.exception.EaafKeyUsageException; +import at.gv.egiz.eaaf.core.exceptions.EaafException; +import at.gv.egiz.eaaf.core.impl.credential.EaafKeyStoreUtils; +import at.gv.egiz.eaaf.core.impl.data.Pair; +import lombok.AllArgsConstructor; +import lombok.Getter; +import lombok.extern.slf4j.Slf4j; + +/** + * {@link JoseUtils} provides static methods JWS and JWE processing. + * + * @author tlenz + * + */ +@Slf4j +public class JoseUtils { + + private static final Provider provider = new BouncyCastleProvider(); + + /** + * Create a JWS signature. + * + * <p> + * Use {@link org.jose4j.jws.AlgorithmIdentifiers.RSA_PSS_USING_SHA256} in case + * of a RSA based key and + * {@link org.jose4j.jws.AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256} + * in case of an ECC based key. + * </p> + * + * @param keyStore KeyStore that should be used + * @param keyAlias Alias of the private key + * @param keyPassword Password to access the key + * @param payLoad PayLoad to sign + * @param addFullCertChain If true the full certificate chain will be + * added, otherwise only the + * X509CertSha256Fingerprint is added into JOSE + * header + * @param friendlyNameForLogging FriendlyName for the used KeyStore for logging + * purposes only + * @return Signed PayLoad in serialized form + * @throws EaafException In case of a key-access or key-usage error + * @throws JoseException In case of a JOSE error + */ + public static String createSignature(@Nonnull Pair<KeyStore, Provider> keyStore, + @Nonnull final String keyAlias, @Nonnull final char[] keyPassword, + @Nonnull final String payLoad, boolean addFullCertChain, + @Nonnull String friendlyNameForLogging) throws EaafException, JoseException { + return createSignature(keyStore, keyAlias, keyPassword, payLoad, addFullCertChain, Collections.emptyMap(), + AlgorithmIdentifiers.RSA_PSS_USING_SHA256, AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256, + friendlyNameForLogging); + + } + + /** + * Create a JWS signature. + * + * <p> + * Use {@link org.jose4j.jws.AlgorithmIdentifiers.RSA_PSS_USING_SHA256} in case + * of a RSA based key and + * {@link org.jose4j.jws.AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256} + * in case of an ECC based key. + * </p> + * + * @param keyStore KeyStore that should be used + * @param keyAlias Alias of the private key + * @param keyPassword Password to access the key + * @param payLoad PayLoad to sign + * @param addFullCertChain If true the full certificate chain will be + * added, otherwise only the + * X509CertSha256Fingerprint is added into JOSE + * header + * @param joseHeaders HeaderName and HeaderValue that should be set + * into JOSE header + * @param friendlyNameForLogging FriendlyName for the used KeyStore for logging + * purposes only + * @return Signed PayLoad in serialized form + * @throws EaafException In case of a key-access or key-usage error + * @throws JoseException In case of a JOSE error + */ + public static String createSignature(@Nonnull Pair<KeyStore, Provider> keyStore, + @Nonnull final String keyAlias, @Nonnull final char[] keyPassword, + @Nonnull final String payLoad, boolean addFullCertChain, + @Nonnull final Map<String, String> joseHeaders, + @Nonnull String friendlyNameForLogging) throws EaafException, JoseException { + return createSignature(keyStore, keyAlias, keyPassword, payLoad, addFullCertChain, joseHeaders, + AlgorithmIdentifiers.RSA_PSS_USING_SHA256, AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256, + friendlyNameForLogging); + + } + + /** + * Create a JWS signature. + * + * @param keyStore KeyStore that should be used + * @param keyAlias Alias of the private key + * @param keyPassword Password to access the key + * @param payLoad PayLoad to sign + * @param addFullCertChain If true the full certificate chain will be + * added, otherwise only the + * X509CertSha256Fingerprint is added into JOSE + * header + * @param joseHeaders HeaderName and HeaderValue that should be set + * into JOSE header + * @param rsaAlgToUse Signing algorithm that should be used in case + * of a signing key based on RSA + * @param eccAlgToUse Signing algorithm that should be used in case + * of a signing key based on ECC + * @param friendlyNameForLogging FriendlyName for the used KeyStore for logging + * purposes only + * @return Signed PayLoad in serialized form + * @throws EaafException In case of a key-access or key-usage error + * @throws JoseException In case of a JOSE error + */ + public static String createSignature(@Nonnull Pair<KeyStore, Provider> keyStore, + @Nonnull final String keyAlias, @Nonnull final char[] keyPassword, + @Nonnull final String payLoad, boolean addFullCertChain, + @Nonnull final Map<String, String> joseHeaders, + @Nonnull final String rsaAlgToUse, @Nonnull final String eccAlgToUse, + @Nonnull String friendlyNameForLogging) throws EaafException, JoseException { + + final JsonWebSignature jws = new JsonWebSignature(); + + // set payload + jws.setPayload(payLoad); + + // set JOSE headers + for (final Entry<String, String> el : joseHeaders.entrySet()) { + log.trace("Set JOSE header: {} with value: {} into JWS", el.getKey(), el.getValue()); + jws.setHeader(el.getKey(), el.getValue()); + + } + + // set signing information + final Pair<Key, X509Certificate[]> signingCred = EaafKeyStoreUtils.getPrivateKeyAndCertificates( + keyStore.getFirst(), keyAlias, keyPassword, true, friendlyNameForLogging); + + // set verification key + jws.setKey(convertToBcKeyIfRequired(signingCred.getFirst())); + + jws.setAlgorithmHeaderValue(getKeyOperationAlgorithmFromCredential( + jws.getKey(), rsaAlgToUse, eccAlgToUse, friendlyNameForLogging)); + + // set special provider if required + if (keyStore.getSecond() != null) { + log.trace("Injecting special Java Security Provider: {}", keyStore.getSecond().getName()); + final ProviderContext providerCtx = new ProviderContext(); + providerCtx.getSuppliedKeyProviderContext().setSignatureProvider(keyStore.getSecond().getName()); + providerCtx.getGeneralProviderContext().setGeneralProvider(BouncyCastleProvider.PROVIDER_NAME); + jws.setProviderContext(providerCtx); + + } else { + final ProviderContext providerCtx = new ProviderContext(); + providerCtx.getGeneralProviderContext().setGeneralProvider(BouncyCastleProvider.PROVIDER_NAME); + jws.setProviderContext(providerCtx); + + } + + if (addFullCertChain) { + jws.setCertificateChainHeaderValue(signingCred.getSecond()); + + } + + jws.setX509CertSha256ThumbprintHeaderValue(signingCred.getSecond()[0]); + + return jws.getCompactSerialization(); + + } + + /** + * Verify a JOSE signature. + * + * @param serializedContent Serialized content that should be verified + * @param trustedCerts Trusted certificates that should be used for + * verification + * @param constraints {@link AlgorithmConstraints} for verification + * @return {@link JwsResult} object + * @throws JoseException In case of a signature verification error + * @throws IOException In case of a general error + */ + public static JwsResult validateSignature(@Nonnull final String serializedContent, + @Nonnull final List<X509Certificate> trustedCerts, @Nonnull final AlgorithmConstraints constraints) + throws JoseException, IOException { + final JsonWebSignature jws = new JsonWebSignature(); + // set payload + jws.setCompactSerialization(serializedContent); + + // set security constrains + jws.setAlgorithmConstraints(constraints); + + // load signinc certs + Key selectedKey = null; + final List<X509Certificate> x5cCerts = jws.getCertificateChainHeaderValue(); + final String x5t256 = jws.getX509CertSha256ThumbprintHeaderValue(); + if (x5cCerts != null) { + log.debug("Found x509 certificate in JOSE header ... "); + log.trace("Sorting received X509 certificates ... "); + final List<X509Certificate> sortedX5cCerts = X509Utils.sortCertificates(x5cCerts); + + + + if (trustedCerts.contains(sortedX5cCerts.get(0))) { + selectedKey = sortedX5cCerts.get(0).getPublicKey(); + + } else { + log.info("Can NOT find JOSE certificate in truststore."); + if (log.isDebugEnabled()) { + try { + log.debug("Cert: {}", Base64Utils.encodeToString(sortedX5cCerts.get(0).getEncoded())); + + } catch (final CertificateEncodingException e) { + log.warn("Can not create DEBUG output", e); + + } + } + } + + } else if (StringUtils.isNotEmpty(x5t256)) { + log.debug("Found x5t256 fingerprint in JOSE header .... "); + final X509VerificationKeyResolver x509VerificationKeyResolver = new X509VerificationKeyResolver( + trustedCerts); + selectedKey = x509VerificationKeyResolver.resolveKey(jws, Collections.<JsonWebStructure>emptyList()); + + } else { + throw new JoseException("JWS contains NO signature certificate or NO certificate fingerprint"); + + } + + if (selectedKey == null) { + throw new JoseException("Can NOT select verification key for JWS. Signature verification FAILED"); + + } + + //set BouncyCastleProvider as default provider + final ProviderContext providerCtx = new ProviderContext(); + providerCtx.getGeneralProviderContext().setGeneralProvider(BouncyCastleProvider.PROVIDER_NAME); + jws.setProviderContext(providerCtx); + + // set verification key + jws.setKey(convertToBcKeyIfRequired(selectedKey)); + + // load payLoad + return new JwsResult( + jws.verifySignature(), + jws.getUnverifiedPayload(), + jws.getHeaders(), + x5cCerts); + + } + + + /** + * Convert an ECC public-key into BouncyCastle implementation. + * + * <p> IAIK JCE / Eccelerate ECC Keys are not compatible to JWS impl.</p> + * @param input Key + * @return input Key, or BC ECC-Key in case of a ECC Key + */ + public static Key convertToBcKeyIfRequired(Key input) { + try { + if (input instanceof ECPublicKey + && "iaik.security.ec.common.ECPublicKey".equals(input.getClass().getName())) { + + //convert Key to BouncyCastle KeyImplemenation because there is an + //incompatibility with IAIK EC Keys and JWS signature-verfification implementation + PublicKey publicKey = KeyFactory.getInstance( + input.getAlgorithm(), provider).generatePublic( + new X509EncodedKeySpec(input.getEncoded())); + return publicKey; + + } else if (input instanceof ECPrivateKey + && "iaik.security.ec.common.ECPrivateKey".equals(input.getClass().getName())) { + //convert Key to BouncyCastle KeyImplemenation because there is an + //incompatibility with IAIK EC Keys and JWS signature-creation implementation + Key privateKey = KeyFactory.getInstance( + input.getAlgorithm(), provider).generatePrivate( + new PKCS8EncodedKeySpec(input.getEncoded())); + + return privateKey; + + } + + } catch (InvalidKeySpecException | NoSuchAlgorithmException e) { + log.warn("Can NOT convert {} to {}. The verification may FAIL.", + input.getClass().getName(), PublicKey.class.getName(), e); + + } + + return input; + + } + + /** + * Select signature algorithm for a given credential. + * + * @param key {@link X509Credential} that will be used for + * key operations + * @param rsaSigAlgorithm RSA based algorithm that should be used in case + * of RSA credential + * @param ecSigAlgorithm EC based algorithm that should be used in case + * of RSA credential + * @param friendlyNameForLogging KeyStore friendlyName for logging purposes + * @return either the RSA based algorithm or the EC based algorithm + * @throws EaafKeyUsageException In case of an unsupported private-key type + */ + private static String getKeyOperationAlgorithmFromCredential(Key key, + String rsaSigAlgorithm, String ecSigAlgorithm, String friendlyNameForLogging) + throws EaafKeyUsageException { + if (key instanceof RSAPrivateKey) { + return rsaSigAlgorithm; + + } else if (key instanceof ECPrivateKey) { + return ecSigAlgorithm; + + } else { + log.warn("Could NOT select the cryptographic algorithm from Private-Key type"); + throw new EaafKeyUsageException(EaafKeyUsageException.ERROR_CODE_01, + friendlyNameForLogging, + "Can not select cryptographic algorithm"); + + } + + } + + private JoseUtils() { + + } + + @Getter + @AllArgsConstructor + public static class JwsResult { + final boolean valid; + final String payLoad; + final Headers fullJoseHeader; + final List<X509Certificate> x5cCerts; + + } +} |