证书注册流程是什么?
我正在寻找注册证书的过程。
我已经搜索了很多,但没有找到一个好的答案。到现在为止,我首先要生成一个密钥库(用于创建公共密钥和私有密钥),然后应该保留私有密钥,并将公共密钥与其他信息(如名称和组织)一起发送给CA。然后,CA将生成一些东西,并且还给我一些包含公钥和信息的东西。
CA生成什么?什么是P12文件,.cer文件包含什么?
回答:
在公钥基础结构中颁发证书的一般过程大致如下:
客户生成私钥和公钥
客户端生成一个CSR(证书签名请求),其中包括诸如Common Name和Public Key之类的属性。使用私钥对其进行签名并将其发送到服务器
服务器使用CSR数据构建X509证书,使用CA私钥对其进行签名,然后将X509返回给客户端
客户端将私钥和证书存储在KeyStore中
CA生成什么?
x509证书
什么是P12文件
包含密钥库的PKCS#12格式(.pfx或.p12)的文件
什么是.cer文件包含
DER或PEM格式的证书的公共部分(非私钥)
回答:
compile 'com.madgag.spongycastle:core:1.51.0.0'compile 'com.madgag.spongycastle:pkix:1.51.0.0'
//Generate KeyPairKeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
keyGen.initialize(KEY_SIZE, new SecureRandom());
KeyPair keyPair = keyGen.generateKeyPair();
//Generate CSR in PKCS#10 format encoded in DER
PKCS10CertificationRequest csr = CsrHelper.generateCSR(keyPair, commonname);
byte CSRder[] = csr.getEncoded();
public class CsrHelper { private final static String DEFAULT_SIGNATURE_ALGORITHM = "SHA256withRSA";
private final static String CN_PATTERN = "CN=%s, O=Aralink, OU=OrgUnit";
private static class JCESigner implements ContentSigner {
private static Map<String, AlgorithmIdentifier> ALGOS = new HashMap<String, AlgorithmIdentifier>();
static {
ALGOS.put("SHA256withRSA".toLowerCase(), new AlgorithmIdentifier(
new ASN1ObjectIdentifier("1.2.840.113549.1.1.11")));
ALGOS.put("SHA1withRSA".toLowerCase(), new AlgorithmIdentifier(
new ASN1ObjectIdentifier("1.2.840.113549.1.1.5")));
}
private String mAlgo;
private Signature signature;
private ByteArrayOutputStream outputStream;
public JCESigner(PrivateKey privateKey, String sigAlgo) {
//Utils.throwIfNull(privateKey, sigAlgo);
mAlgo = sigAlgo.toLowerCase();
try {
this.outputStream = new ByteArrayOutputStream();
this.signature = Signature.getInstance(sigAlgo);
this.signature.initSign(privateKey);
} catch (GeneralSecurityException gse) {
throw new IllegalArgumentException(gse.getMessage());
}
}
@Override
public AlgorithmIdentifier getAlgorithmIdentifier() {
AlgorithmIdentifier id = ALGOS.get(mAlgo);
if (id == null) {
throw new IllegalArgumentException("Does not support algo: " +
mAlgo);
}
return id;
}
@Override
public OutputStream getOutputStream() {
return outputStream;
}
@Override
public byte[] getSignature() {
try {
signature.update(outputStream.toByteArray());
return signature.sign();
} catch (GeneralSecurityException gse) {
gse.printStackTrace();
return null;
}
}
}
//Create the certificate signing request (CSR) from private and public keys
public static PKCS10CertificationRequest generateCSR(KeyPair keyPair, String cn) throws IOException,
OperatorCreationException {
String principal = String.format(CN_PATTERN, cn);
ContentSigner signer = new JCESigner (keyPair.getPrivate(),DEFAULT_SIGNATURE_ALGORITHM);
PKCS10CertificationRequestBuilder csrBuilder = new JcaPKCS10CertificationRequestBuilder(
new X500Name(principal), keyPair.getPublic());
ExtensionsGenerator extensionsGenerator = new ExtensionsGenerator();
extensionsGenerator.addExtension(Extension.basicConstraints, true, new BasicConstraints(
true));
csrBuilder.addAttribute(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest,
extensionsGenerator.generate());
PKCS10CertificationRequest csr = csrBuilder.build(signer);
return csr;
}
}
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