我想在java中使用证书签署文件内容。
使用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,我有一个签名并信任的文件。
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。
为此,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:
我有错误 X509CertificateHolder holder = new X509CertificateHolder(caCertificate);
java.io.IOException:遇到未知标记13
答案 0 :(得分:5)
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()));