私钥算法与最终实体证书中的公钥算法不匹配（在索引0处）

Question

我试图将私钥和it证书链存储在密钥库中，我得到以下错误：私钥算法与最终实体证书中的公钥算法不匹配（在索引0处）

这就是我生成密钥对的方式：

public GenerateKeyPair() throws NoSuchAlgorithmException, NoSuchProviderException, InvalidAlgorithmParameterException {

    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    //Generating and ECDSA KeyPair
    ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("prime239v3");
    KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "BC");

    g.initialize(ecSpec, new SecureRandom());

    KeyPair keygen = g.generateKeyPair();

    //Setting the ECDSA KeyGen
    this.keygen = keygen;
}

这是我用来生成X509证书的方法：

public static X509Certificate GetCertificate_v3(KeyPair keygen, Date startDate, Date expiryDate, 
        String serial,  String Certification_Aut_Id) throws InvalidKeyException, SecurityException, SignatureException{

    X509V3CertificateGenerator v3CertGen =  new X509V3CertificateGenerator();
    v3CertGen.setSerialNumber(BigInteger.valueOf(System.currentTimeMillis()));
    v3CertGen.setIssuerDN(new X509Principal("CN=" + Certification_Aut_Id + ", O=o, L=L, ST=il, C= c"));
    v3CertGen.setNotBefore(startDate);
    v3CertGen.setNotAfter(expiryDate);
    v3CertGen.setSubjectDN(new X509Principal("CN=" + Certification_Aut_Id + ", O=o, L=L, ST=il, C= c"));
    v3CertGen.setPublicKey(keygen.getPublic());
    v3CertGen.setSignatureAlgorithm("SHA256withECDSA");
    X509Certificate cert = v3CertGen.generateX509Certificate(keygen.getPrivate());

    return cert;

}

用于存储密钥对的代码是：

public static void storeKeypair(String KSpwd, String PKpwd, String KSname, X509Certificate certificate, 
        KeyPair keygen, String alias, String temp_local) throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException{

    //Before a keystore can be accessed, it must be loaded.
        KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
        // get user password and file input stream
        char[] KSpassword = KSpwd.toCharArray();
        FileInputStream fis = new java.io.FileInputStream(KSname);
        ks.load(fis, KSpassword);
        fis.close();

        //writing the X509Certificate in a .cer file
        FileOutputStream fos1 = new FileOutputStream(temp_local + alias + ".cer");
        fos1.write( certificate.getEncoded() );
        fos1.flush();
        fos1.close();

    // Load the certificate chain (in X.509 DER encoding).
        FileInputStream certificateStream = new FileInputStream(temp_local + alias + ".cer");
        CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
        Certificate[] chain = {};
        chain = certificateFactory.generateCertificates(certificateStream).toArray(chain);

    // save my private key & certificate chain
        char[] PKpassword = PKpwd.toCharArray();
        ks.setEntry(alias, new KeyStore.PrivateKeyEntry(keygen.getPrivate(), chain),
                    new KeyStore.PasswordProtection(PKpassword)
                );

    //Store the KeyStore
     // Write out the keystore
        FileOutputStream fos = new FileOutputStream(KSname);
        ks.store(fos, KSpassword);
        fos.close();
}

生成的错误为：

Exception in thread "main" java.lang.IllegalArgumentException: private key algorithm does not match algorithm of public key in end entity certificate (at index 0)
at java.security.KeyStore$PrivateKeyEntry.<init>(KeyStore.java:408)
at SDSGeneration.keyStore.storeKeypair(keyStore.java:65)
at FinalTest.main(FinalTest.java:70)

Answer 1

我在生成乏味的键以启用Web推送时遇到了这个问题。我想将生成的密钥存储到java密钥库中，该密钥库要求您拥有私钥证书。

将算法从ECDSA更改为EC使事情得以进行。Afaik EC是生成密钥的算法，而ECDSA是EC密钥的签名算法。

public static KeyPair generateVapidKeyPair() throws CryptoException {
    try {
        ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("prime256v1");
        KeyPairGenerator g = KeyPairGenerator.getInstance("EC", "BC");
        g.initialize(ecSpec, new SecureRandom());
        return g.generateKeyPair();
    } catch (NoSuchAlgorithmException | NoSuchProviderException | InvalidAlgorithmParameterException ex) {
        throw new CryptoException("Could not generate VAPID keypair", ex);
    }
}

之后，我用SHA256with ECDSA算法签署密钥，并用BC生成证书。这与RSA基本相同，所以我将省略这部分代码。之后，我能够毫无问题地从密钥库中存储和检索密钥（以编程方式使用BC作为提供者）。

Answer 2

我在使用Web Crypto API时遇到了同样的问题。我的问题是，我使用密钥对而不是派生的密钥来加密消息。

你可以在这里找到一个完整的例子