密码学 - Java 1.4 中的 RSA 算法

发布于 2024-09-06 20:55:33 字数 398 浏览 7 评论 0原文

我正在使用 Java 1.4.2_10，并且尝试使用 RSA 加密：

我收到以下代码的 NoSuchAlgorithmException：

cipher = Cipher.getInstance("RSA");

这是错误：

java.security.NoSuchAlgorithmException: Cannot find any provider supporting RSA
        at javax.crypto.Cipher.getInstance(DashoA6275)

这在 1.5 及更高版本中工作正常，但我需要使用 1.4。是否有任何解决方法或第三方产品可以用来解决此问题？

提前致谢。

原文

I am using Java 1.4.2_10 and I am trying to use RSA encryption:

I am getting the NoSuchAlgorithmException for the following code:

cipher = Cipher.getInstance("RSA");

This is the error:

java.security.NoSuchAlgorithmException: Cannot find any provider supporting RSA
        at javax.crypto.Cipher.getInstance(DashoA6275)

This works fine in 1.5 and above, however I need to use 1.4. Is there any workaround or thirdparty product that I can use to fix this?

Thanks in advance.

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长梦不多时 2024-09-13 20:55:33

您可以安装 Bouncy Castle 加密提供程序。只需抓住他们的罐子，然后调用 Cipher.getInstance("RSA", "BC")

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素年丶 2024-09-13 20:55:33

Java 1.4 绝对支持 RSA，所以这不起作用的事实表明更深层次的问题是错误的。这是否适用于任何其他密码（例如“AES”或“DES”）？您应该检查以确保您的提供商配置正确。以下代码在您的系统上的输出是什么：

System.out.println("Providers: ");
java.security.Provider[] providers =  java.security.Security.getProviders();
for(int x = 0; x < providers.length; x++) {
    System.out.println("\t" + providers[x]);
}

System.out.println();
System.out.println("Algorithms: ");
java.util.Set algs = java.security.Security.getAlgorithms("Cipher");

java.util.Iterator i_algs = algs.iterator(); 
while(i_algs.hasNext()) {
    System.out.println("\t" + i_algs.next());
}

Java 1.4 definitely supports RSA, so the fact that this isn't working suggests that something deeper is wrong. Does this work with any other ciphers (such as "AES" or "DES")? You should check to make sure your providers are properly configured. What is the output of the following code on your system:

System.out.println("Providers: ");
java.security.Provider[] providers =  java.security.Security.getProviders();
for(int x = 0; x < providers.length; x++) {
    System.out.println("\t" + providers[x]);
}

System.out.println();
System.out.println("Algorithms: ");
java.util.Set algs = java.security.Security.getAlgorithms("Cipher");

java.util.Iterator i_algs = algs.iterator(); 
while(i_algs.hasNext()) {
    System.out.println("\t" + i_algs.next());
}

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