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189
jsign-core/src/main/java/net/jsign/jca/AzureTrustedSigningService.java
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| /** | ||
| * Copyright 2024 Emmanuel Bourg | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://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. | ||
| */ | ||
|
|
||
| package net.jsign.jca; | ||
|
|
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| import java.io.ByteArrayInputStream; | ||
| import java.io.IOException; | ||
| import java.security.GeneralSecurityException; | ||
| import java.security.InvalidAlgorithmParameterException; | ||
| import java.security.KeyStoreException; | ||
| import java.security.UnrecoverableKeyException; | ||
| import java.security.cert.Certificate; | ||
| import java.security.cert.CertificateException; | ||
| import java.security.cert.CertificateFactory; | ||
| import java.util.ArrayList; | ||
| import java.util.Base64; | ||
| import java.util.Collection; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
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| import com.cedarsoftware.util.io.JsonWriter; | ||
|
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| import net.jsign.DigestAlgorithm; | ||
|
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| /** | ||
| * Signing service using the Azure Trusted Signing API. | ||
| * | ||
| * @since 6.1 | ||
| */ | ||
| public class AzureTrustedSigningService implements SigningService { | ||
|
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| /** Cache of certificate chains indexed by alias */ | ||
| private final Map<String, Certificate[]> certificates = new HashMap<>(); | ||
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| private final RESTClient client; | ||
|
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| /** Timeout in seconds for the signing operation */ | ||
| private long timeout = 60; | ||
|
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| /** | ||
| * Mapping between Java and Azure signing algorithms. | ||
| * @see <a href="https://docs.microsoft.com/en-us/rest/api/keyvault/sign/sign#jsonwebkeysignaturealgorithm">Key Vault API - JonWebKeySignatureAlgorithm</a> | ||
| */ | ||
| private final Map<String, String> algorithmMapping = new HashMap<>(); | ||
| { | ||
| algorithmMapping.put("SHA256withRSA", "RS256"); | ||
| algorithmMapping.put("SHA384withRSA", "RS384"); | ||
| algorithmMapping.put("SHA512withRSA", "RS512"); | ||
| algorithmMapping.put("SHA256withECDSA", "ES256"); | ||
| algorithmMapping.put("SHA384withECDSA", "ES384"); | ||
| algorithmMapping.put("SHA512withECDSA", "ES512"); | ||
| algorithmMapping.put("SHA256withRSA/PSS", "PS256"); | ||
| algorithmMapping.put("SHA384withRSA/PSS", "PS384"); | ||
| algorithmMapping.put("SHA512withRSA/PSS", "PS512"); | ||
| } | ||
|
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| public AzureTrustedSigningService(String endpoint, String token) { | ||
| if (!endpoint.startsWith("http")) { | ||
| endpoint = "https://" + endpoint; | ||
| } | ||
| client = new RESTClient(endpoint, conn -> conn.setRequestProperty("Authorization", "Bearer " + token)); | ||
| } | ||
|
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| void setTimeout(int timeout) { | ||
| this.timeout = timeout; | ||
| } | ||
|
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| @Override | ||
| public String getName() { | ||
| return "TrustedSigning"; | ||
| } | ||
|
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| @Override | ||
| public List<String> aliases() throws KeyStoreException { | ||
| return new ArrayList<>(); | ||
| } | ||
|
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| @Override | ||
| public Certificate[] getCertificateChain(String alias) throws KeyStoreException { | ||
| if (!certificates.containsKey(alias)) { | ||
| try { | ||
| String account = alias.substring(0, alias.indexOf('/')); | ||
| String profile = alias.substring(alias.indexOf('/') + 1); | ||
| SignStatus status = sign(account, profile, "RS256", new byte[32]); | ||
| certificates.put(alias, status.getCertificateChain().toArray(new Certificate[0])); | ||
| } catch (Exception e) { | ||
| throw new KeyStoreException("Unable to retrieve the certificate chain '" + alias + "'", e); | ||
| } | ||
| } | ||
|
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| return certificates.get(alias); | ||
| } | ||
|
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| @Override | ||
| public SigningServicePrivateKey getPrivateKey(String alias, char[] password) throws UnrecoverableKeyException { | ||
| return new SigningServicePrivateKey(alias, "RSA", this); | ||
| } | ||
|
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| @Override | ||
| public byte[] sign(SigningServicePrivateKey privateKey, String algorithm, byte[] data) throws GeneralSecurityException { | ||
| String alg = algorithmMapping.get(algorithm); | ||
| if (alg == null) { | ||
| throw new InvalidAlgorithmParameterException("Unsupported signing algorithm: " + algorithm); | ||
| } | ||
|
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| DigestAlgorithm digestAlgorithm = DigestAlgorithm.of(algorithm.substring(0, algorithm.toLowerCase().indexOf("with"))); | ||
| data = digestAlgorithm.getMessageDigest().digest(data); | ||
|
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| String alias = privateKey.getId(); | ||
| String account = alias.substring(0, alias.indexOf('/')); | ||
| String profile = alias.substring(alias.indexOf('/') + 1); | ||
| try { | ||
| SignStatus status = sign(account, profile, alg, data); | ||
| return status.signature; | ||
| } catch (IOException e) { | ||
| throw new GeneralSecurityException(e); | ||
| } | ||
| } | ||
|
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| private SignStatus sign(String account, String profile, String algorithm, byte[] data) throws IOException { | ||
| Map<String, Object> request = new HashMap<>(); | ||
| request.put("signatureAlgorithm", algorithm); | ||
| request.put("digest", Base64.getEncoder().encodeToString(data)); | ||
|
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| Map<String, Object> args = new HashMap<>(); | ||
| args.put(JsonWriter.TYPE, "false"); | ||
|
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| Map<String, ?> response = client.post("/codesigningaccounts/" + account + "/certificateprofiles/" + profile + "/sign?api-version=2022-06-15-preview", JsonWriter.objectToJson(request, args)); | ||
|
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| String operationId = (String) response.get("operationId"); | ||
|
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| // poll until the operation is completed | ||
| long startTime = System.currentTimeMillis(); | ||
| int i = 0; | ||
| while (System.currentTimeMillis() - startTime < timeout * 1000) { | ||
| try { | ||
| Thread.sleep(Math.min(1000, 50 + 10 * i++)); | ||
| } catch (InterruptedException e) { | ||
| break; | ||
| } | ||
| response = client.get("/codesigningaccounts/" + account + "/certificateprofiles/" + profile + "/sign/" + operationId + "?api-version=2022-06-15-preview"); | ||
| String status = (String) response.get("status"); | ||
| if ("InProgress".equals(status)) { | ||
| continue; | ||
| } | ||
| if ("Succeeded".equals(status)) { | ||
| break; | ||
| } | ||
|
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| throw new IOException("Signing operation " + operationId + " failed: " + status); | ||
| } | ||
|
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| if (!"Succeeded".equals(response.get("status"))) { | ||
| throw new IOException("Signing operation " + operationId + " timed out"); | ||
| } | ||
|
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| SignStatus status = new SignStatus(); | ||
| status.signature = Base64.getDecoder().decode((String) response.get("signature")); | ||
| status.signingCertificate = new String(Base64.getDecoder().decode((String) response.get("signingCertificate"))); | ||
|
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| return status; | ||
| } | ||
|
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| private static class SignStatus { | ||
| public byte[] signature; | ||
| public String signingCertificate; | ||
|
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| public Collection<? extends Certificate> getCertificateChain() throws CertificateException { | ||
| byte[] cerbin = Base64.getMimeDecoder().decode(signingCertificate); | ||
|
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| CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509"); | ||
| return certificateFactory.generateCertificates(new ByteArrayInputStream(cerbin)); | ||
| } | ||
| } | ||
| } |
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