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java - 异常选择签名：无法验证签名

问题描述

我有以下代码，取自PDFBox 2 中的ShowSignature示例。我正在运行五个测试，其中 4 个通过没有问题（无签名、单签名、双签名、过期签名），但是第五个是机智的椭圆曲线，但它失败了。

有趣的是，当我仅在测试类上启动 JunitTest 时它会通过，但一旦我在包或项目级别启动它就会失败。

我会假设测试类之前的某些东西正在干扰，但找不到暗示它可能是什么。我检查了 bouncycastle（始终使用 1.54），java jdk 在任何时候都正确使用（jdk1.8.0_181）。

我正在检查要抛出的异常（ERROR_VERIFYING_PDF_SIGNATURE），它是在类测试中抛出的，但是在更高级别开始时会抛出一个不同的异常。

if 中发生错误(signerInformation.verify(new JcaSimpleSignerInfoVerifierBuilder().build(certFromSignedData))并且具有此堆栈跟踪：

java.lang.AssertionError: 
Expected: (an instance of de.bdr.rt.core.common.api.BusinessLogicException and exception with message a string containing "Die Signatur des PDF-Dokuments konnte nicht verifiziert werden.")
 but: an instance of de.bdr.rt.core.common.api.BusinessLogicException <org.bouncycastle.operator.RuntimeOperatorException: exception obtaining signature: Could not verify signature> is a org.bouncycastle.operator.RuntimeOperatorException
Stacktrace was: org.bouncycastle.operator.RuntimeOperatorException: exception obtaining signature: Could not verify signature
at org.bouncycastle.operator.jcajce.JcaContentVerifierProviderBuilder$SigVerifier.verify(Unknown Source)
at org.bouncycastle.operator.jcajce.JcaContentVerifierProviderBuilder$RawSigVerifier.verify(Unknown Source)
at org.bouncycastle.cms.SignerInformation.doVerify(Unknown Source)
at org.bouncycastle.cms.SignerInformation.verify(Unknown Source)
at de.bdr.gematik.tsp.sc.antragsverwaltung.impl.itsp.ds.PDFDigitalSignatureCheckTest.verifyPKCS7(PDFDigitalSignatureCheckTest.java:280)
at de.bdr.gematik.tsp.sc.antragsverwaltung.impl.itsp.ds.PDFDigitalSignatureCheckTest.testPdfSignature(PDFDigitalSignatureCheckTest.java:170)
at de.bdr.gematik.tsp.sc.antragsverwaltung.impl.itsp.ds.PDFDigitalSignatureCheckTest.testPDFECKeySignaturFails(PDFDigitalSignatureCheckTest.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:239)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)
Caused by: java.security.SignatureException: Could not verify signature
at sun.security.ec.ECDSASignature.engineVerify(ECDSASignature.java:325)
at java.security.Signature$Delegate.engineVerify(Signature.java:1222)
at java.security.Signature.verify(Signature.java:655)
at org.bouncycastle.operator.jcajce.JcaContentVerifierProviderBuilder$SignatureOutputStream.verify(Unknown Source)
... 32 more
Caused by: java.security.InvalidAlgorithmParameterException
at sun.security.ec.ECDSASignature.verifySignedDigest(Native Method)
at sun.security.ec.ECDSASignature.engineVerify(ECDSASignature.java:321)
... 35 more

at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
at org.junit.Assert.assertThat(Assert.java:956)
at org.junit.Assert.assertThat(Assert.java:923)
at org.junit.rules.ExpectedException.handleException(ExpectedException.java:252)
at org.junit.rules.ExpectedException.access$000(ExpectedException.java:106)
at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:241)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)

代码：

   private void verifyPKCS7(byte[] byteArray, COSString contents, PDSignature sig)
        throws CMSException, CertificateException, StoreException, OperatorCreationException,
        NoSuchAlgorithmException, NoSuchProviderException {
    CMSProcessable signedContent = new CMSProcessableByteArray(byteArray);
    CMSSignedData signedData = new CMSSignedData(signedContent, contents.getBytes());
    @SuppressWarnings("unchecked")
    Store<X509CertificateHolder> certificatesStore = signedData.getCertificates();
    Collection<SignerInformation> signers = signedData.getSignerInfos().getSigners();
    SignerInformation signerInformation = signers.iterator().next();
    @SuppressWarnings("unchecked")
    Collection<X509CertificateHolder> matches = certificatesStore
            .getMatches((Selector<X509CertificateHolder>) signerInformation.getSID());
    X509CertificateHolder certificateHolder = matches.iterator().next();
    X509Certificate certFromSignedData = new JcaX509CertificateConverter().getCertificate(certificateHolder);
    System.out.println("certFromSignedData: " + certFromSignedData);
    try {
        certFromSignedData.checkValidity(sig.getSignDate().getTime());
        System.out.println("Certificate valid at signing time");
    } catch (CertificateExpiredException ex) {
        System.err.println("Certificate expired at signing time");
    } catch (CertificateNotYetValidException ex) {
        System.err.println("Certificate not yet valid at signing time");
    }

    if (isSelfSigned(certFromSignedData)) {
        System.err.println("Certificate is self-signed, LOL!");
    } else {
        System.out.println("Certificate is not self-signed");
        // todo rest of chain
    }

    if (signerInformation.verify(new JcaSimpleSignerInfoVerifierBuilder().build(certFromSignedData))) {
        System.out.println("Signature verified");
    } else {
        System.out.println("Signature verification failed");
        throw new BusinessLogicException(Messages.ERROR_VERIFYING_PDF_SIGNATURE);
    }
}

标签： javabouncycastlepdfbox

解决方案

这是 PDFBox 示例的一个缺点。请更换

signerInformation.verify(new JcaSimpleSignerInfoVerifierBuilder().build(certFromSignedData));

至

signerInformation.verify(new JcaSimpleSignerInfoVerifierBuilder().setProvider(BouncyCastleProvider.PROVIDER_NAME).build(certFromSignedData));

您可能需要将 BC 注册为提供者：

Security.addProvider(new BouncyCastleProvider());

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