java - 如何在 keystore 中存储 key

Question

我需要将 2 个 key 存储到 KeyStore这是相关代码:

KeyStore ks = KeyStore.getInstance("JKS");
String password = "password";
char[] ksPass = password.toCharArray();
ks.load(null, ksPass);
ks.setKeyEntry("keyForSeckeyDecrypt", privateKey, null, null);
ks.setKeyEntry("keyForDigitalSignature", priv, null, null);
FileOutputStream writeStream = new FileOutputStream("key.store");
ks.store(writeStream, ksPass);
writeStream.close();

虽然我得到一个执行“私钥必须伴随证书链”

那到底是什么？我将如何生成它？

Answer 1

您还需要为私钥条目提供证书(公钥)。对于由 CA 签名的证书，链是 CA 的证书和最终证书。对于自签名证书，您只有自签名证书
示例:

KeyPair keyPair = ...;//You already have this  
X509Certificate certificate = generateCertificate(keyPair);  
KeyStore keyStore = KeyStore.getInstance("JKS");  
keyStore.load(null,null);  
Certificate[] certChain = new Certificate[1];  
certChain[0] = certificate;  
keyStore.setKeyEntry("key1", (Key)keyPair.getPrivate(), pwd, certChain);  

要生成证书，请遵循此 link :
示例:

public X509Certificate generateCertificate(KeyPair keyPair){  
   X509V3CertificateGenerator cert = new X509V3CertificateGenerator();   
   cert.setSerialNumber(BigInteger.valueOf(1));   //or generate a random number  
   cert.setSubjectDN(new X509Principal("CN=localhost"));  //see examples to add O,OU etc  
   cert.setIssuerDN(new X509Principal("CN=localhost")); //same since it is self-signed  
   cert.setPublicKey(keyPair.getPublic());  
   cert.setNotBefore(<date>);  
   cert.setNotAfter(<date>);  
   cert.setSignatureAlgorithm("SHA1WithRSAEncryption");   
    PrivateKey signingKey = keyPair.getPrivate();    
   return cert.generate(signingKey, "BC");  
}