签字/验证属性添加到使用BouncyCastle的CMS签名(Add signed/authenti

我想用BouncyCastle的生成一个简单的CMS签名。此代码的工作！

  Security.addProvider(new BouncyCastleProvider());
  String password = "123456";
  KeyStore ks = KeyStore.getInstance("PKCS12");
  ks.load(new FileInputStream("c:/cert_123456.p12"), password.toCharArray());
  String alias = (String)ks.aliases().nextElement();
  PrivateKey key = (PrivateKey)ks.getKey(alias, password.toCharArray());
  Certificate[] chain = ks.getCertificateChain(alias);

  CMSSignedDataGenerator generator = new CMSSignedDataGenerator();

  generator.addSigner(key, (X509Certificate)chain[0], CMSSignedDataGenerator.DIGEST_SHA1);
  ArrayList list = new ArrayList();
  for (int i = 0; i < chain.length; i++) {
       list.add(chain[i]);
  }
  CertStore chainStore = CertStore.getInstance("Collection", new CollectionCertStoreParameters(list), "BC");
  generator.addCertificatesAndCRLs(chainStore);
  CMSProcessable content = new CMSProcessableByteArray("test".getBytes());
  CMSSignedData signedData = generator.generate(content, false, "BC");

  byte[] pk = signedData.getEncoded();

但是，如何添加签名的属性？
我想删除默认签名的属性并添加签名的策略标识符。

文章是非常受欢迎的。

首先，你似乎是使用在充气城堡的最新版本弃用结构。要添加认证/签名的属性，你必须将它们打包到AttributeTable签名属性添加到签名人就像这样：

ASN1EncodableVector signedAttributes = new ASN1EncodableVector();
signedAttributes.add(new Attribute(CMSAttributes.contentType, new DERSet(new ASN1ObjectIdentifier("1.2.840.113549.1.7.1"))));
signedAttributes.add(new Attribute(CMSAttributes.messageDigest, new DERSet(new DEROctetString(digestBytes))));
signedAttributes.add(new Attribute(CMSAttributes.signingTime, new DERSet(new DERUTCTime(signingDate))));

AttributeTable signedAttributesTable = new AttributeTable(signedAttributes);

然后在的addSigner方法之一使用它。正如我在开头已经提到这种方法已被弃用，你是鼓励使用发电机和发电机建设者。这里有一个简单的例子：

    /* Construct signed attributes */
    ASN1EncodableVector signedAttributes = new ASN1EncodableVector();
    signedAttributes.add(new Attribute(CMSAttributes.contentType, new DERSet(new ASN1ObjectIdentifier("1.2.840.113549.1.7.1"))));
    signedAttributes.add(new Attribute(CMSAttributes.messageDigest, new DERSet(new DEROctetString(digestBytes))));
    signedAttributes.add(new Attribute(CMSAttributes.signingTime, new DERSet(new DERUTCTime(signingDate))));

    AttributeTable signedAttributesTable = new AttributeTable(signedAttributes);
    signedAttributesTable.toASN1EncodableVector();
    DefaultSignedAttributeTableGenerator signedAttributeGenerator = new DefaultSignedAttributeTableGenerator(signedAttributesTable);

    /* Build the SignerInfo generator builder, that will build the generator... that will generate the SignerInformation... */
    SignerInfoGeneratorBuilder signerInfoBuilder = new SignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder().setProvider("BC").build());
    signerInfoBuilder.setSignedAttributeGenerator(signedAttributeGenerator);
    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    JcaContentSignerBuilder contentSigner = new JcaContentSignerBuilder("SHA1withRSA");
    contentSigner.setProvider("BC");

    generator.addSignerInfoGenerator(signerInfoBuilder.build(contentSigner.build(this.signingKey), new X509CertificateHolder(this.signingCert.getEncoded())));

    ArrayList<X509CertificateHolder> signingChainHolder = new ArrayList<X509CertificateHolder>();
    Iterator i = this.signingChain.iterator();
    while (i.hasNext()) {
        X509CertificateObject cert = (X509CertificateObject)i.next();
        signingChainHolder.add(new X509CertificateHolder(cert.getEncoded()));
    }

    generator.addCertificates(new JcaCertStore(signingChainHolder));
    generator.generate(new CMSAbsentContent(), "BC").getEncoded();

这是相当庞大的，可能还没有工作（我在写它的过程，并根据您的问题跌跌撞撞，同时研究一些东西），尤其是signingDate一部分，它可能有是new DERSet(new Time(new Date)) （更新：它的工作原理DERUTCTime ）。

的offtopic了一下：我现在还不能签署和验证的属性，充气城堡得到了与签名者很好的工作都DefaultAuthenticatedAttributeTableGenerator，DefaultSignedAttributeTableGenerator班让我的头周围的差异。似乎有在问候signingTime两者之间的一些细微的差别，SignedAttributes如果不存在添加signingTime默认。 RFC中提到这两种属性类型，但我找不到任何明确的。