如何在C＃中使用PFX证书签署请求？

我正在尝试利用非官方的API文档。我需要使用自己的证书对所有请求进行签名，但是文档仅提供了要使用的Java代码，如下所示：

public class EncryptionUtils {
private static final String ALGORITHM_NAME = "SHA1withRSA";
private static final String CERT_TYPE = "pkcs12";
private static final String CONTAINER_NAME = "LoginCert";
private static final String PASSWORD = "CE75EA598C7743AD9B0B7328DED85B06";

public static String signContent(byte[] contents, final InputStream cert) throws IOException, GeneralSecurityException, NullPointerException {
    final KeyStore instance = KeyStore.getInstance(CERT_TYPE);
    instance.load(cert, PASSWORD.toCharArray());
    final PrivateKey privateKey = (PrivateKey) instance.getKey(CONTAINER_NAME, PASSWORD.toCharArray());
    final Signature instance2 = Signature.getInstance(ALGORITHM_NAME);
    instance2.initSign(privateKey);
    instance2.update(contents);
    return Base64.getEncoder().encodeToString(instance2.sign());
}}

我想出了这段代码

private static string password = "CE75EA598C7743AD9B0B7328DED85B06";
    public static string Sign(string text, string cert)
    {
        X509Certificate2 certificate = new X509Certificate2(DecodeCrt(cert), password, X509KeyStorageFlags.Exportable);
        RSA provider = (RSA)certificate.PrivateKey;
        // Hash the data
        var hash = HashText(text);
        // Sign the hash

        var signature = provider.SignHash(hash, HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1);
        return Convert.ToBase64String(signature);

    }
    public static byte[] HashText(string text) 
    {
        SHA1Managed sha1Hasher = new SHA1Managed();
        UnicodeEncoding encoding = new UnicodeEncoding();
        byte[] data = encoding.GetBytes(text);
        byte[] hash = sha1Hasher.ComputeHash(data);
        return hash;
    }
    public static byte[] DecodeCrt(string crt)
    {
        return Convert.FromBase64String(crt);
    }

但是输出与Java版本不同。我试图从c＃临时运行Java任务，所以我想知道它是否还能工作。有什么办法用C＃编写此代码吗？

问题来源：Stack Overflow