在java中与弹性城堡的标志文件

Question

我想用java中的证书签名文件内容.

有了terminal和openssl,我可以这样做:

openssl smime -sign -in nosign.mobileconfig -out signed.mobileconfig -signer server.crt -inkey server.key -certfile cacert.crt -outform der -nodetach

server.crt和.key是要签名的文件,我想我理解cacert.crt是嵌入在out内容中的.

最后,我有一个签名和信任的文件.

在Java中,我不能使用openssl(不想启动openssl命令)所以,我必须用lib签名.

要做到这一点,我使用Bouncy Castle(版本1.53)

这是我的代码:

    byte[] profile = ...; // I can have it also in String

    // the certificate in -certfile
    FileInputStream inputStream = new FileInputStream("src/main/resources/cacert.crt"); 

    byte[] caCertificate = ByteStreams.toByteArray(inputStream);

    // the certificate to sign : server.crt, embedded in p12
    X509Certificate serverCertificate = (X509Certificate) this.keyStore.getCertificate("1");

    // Private key is the server.key
    ContentSigner sha1Signer = new JcaContentSignerBuilder("SHA1withRSA").setProvider("BC").build(this.privateKey);

    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    generator.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(
            new JcaDigestCalculatorProviderBuilder().setProvider("BC").build()).build(sha1Signer, serverCertificate));

    // the embedded certificate : cacert.crt, but  I don't know if it is good to do that this way
    X509CertificateHolder holder = new X509CertificateHolder(caCertificate);

    generator.addCertificate(holder);

    CMSProcessableByteArray bytes = new CMSProcessableByteArray(profile);
    CMSSignedData signedData = generator.generate(bytes, true);

    System.out.println("signedData : \n" + signedData.getEncoded());

你能帮我拿好签名数据吗？谢谢 !

编辑:我有一个错误

    X509CertificateHolder holder = new X509CertificateHolder(caCertificate);

java.io.IOException:遇到未知标记13

Answer 1

CA证书文件显然是PEM（ASCII）格式。X509CertificateHolder的构造函数需要证书的BER / DER（二进制）编码。

您可以通过添加以下内容进行转换：

PEMParser pemParser = new PEMParser(new FileReader("src/main/resources/cacert.crt"));
X509CertificateHolder caCertificate = (X509CertificateHolder) pemParser.readObject();

您还应该将签名证书添加到CMS结构中：

generator.addCertificate(new X509CertificateHolder(serverCertificate.getEncoded()));