PKCS＃12：DerInputStream.getLength（）异常 [英] PKCS#12 : DerInputStream.getLength() exception

问题描述

我使用keytool命令生成证书：

I generate a certificate using the keytool command:

keytool -genkeypair -alias myRSAKey -keyalg RSA -keysize 1024 -keystore test.p12 -storepass test -storetype pkcs12

然后，如果我尝试使用java安全API加载它，在获取文件作为byte []之后：

Then if I try to load it using java security API, after getting the file as a byte[] :

KeyStore ks = KeyStore.getInstance("PKCS12");
try{
   ks.load(new ByteArrayInputStream(data), "test".toCharArray())
} catch (Exception e){
   ...
}

我得到一个DerInputStream.getLength（）：lengthTag = 127，太大的异常。

I get a DerInputStream.getLength(): lengthTag=127, too big exception.

有什么问题？

推荐答案

google的深度仍然找不到答案。经过几天与一个可怕的质量遗留代码，我发现是什么导致这个错误。

I had this problem and I've searched the depths of google and still couldn't find the answer. After some days battling with a terrible quality legacy code, I found what was causing this error.

KeyStore.load(InputStream is, String pass);

这个方法接受一个I​​nputStream，如果这个InputStream有任何问题，抛出这个异常，我遇到了：

this method takes an InputStream and if there's any problem with such InputStream, this exception is thrown, some problems that I've encountered:

• InputStream指向错误的/空白/刚刚创建的文件


• InputStream已经打开或其他东西保留资源


• InputStream 已经使用并读取，因此InputStream的下一个字节的位置是end

• The InputStream points to the wrong / blank / just created file
• The InputStream is already open or something else is holding the resource
• The InputStream was already used and read, thus the position of the next byte of InputStream is it's end

最后一个是我的问题的责任。代码是从证书创建一个InputStream，并继续使用它在两个KeyStore.load（）调用，第一个成功，第二个总是给我这个错误。

The last one was the responsible for my problem. The code was creating an InputStream from a certificate, and proceeding to use it in two KeyStore.load() calls, the first one was successful, the second one always got me this error.

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