目前，我正在学习使用证书的，现在我很好奇，如果有可能从一个 X509Certificate2一个加载证书的ASN.1表示 - 实例。

I'm currently learning working with certificates and now I'm curious, if it is possible to get the ASN.1 notation of a loaded certificate from a X509Certificate2-instance.

我已经找到了导出 - 方法，它工作正常，但我还没有看到一个possibilty改变输出格式的编码 - 这是只有在DER-格式。

I have found the Export-Method and it works fine, however I have not seen a possibilty to change the encoding of the output format - it's only in the DER-format.

是否有可能出口/转换加载的证书作为ASCII ASN.1的证书，像下面的例子：

Is there a possibility to export/convert a loaded certificate as an ASCII ASN.1 certificate, something like in the example below:

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 1 (0x1)
        Signature Algorithm: md5WithRSAEncryption
        Issuer: C=XY....
 ...

或者是有一个转换器，DER转换为纯文本？

Or is there a converter to convert DER to plain text?

推荐答案

我写了一个GTK＃工具（在C＃），以在几年前这样做。完整的源$ C ​​$ C可从 https://github.com/mono /单工具/树/主/ asn1view

I wrote a Gtk# tool (in C#) to do this a few years ago. The full source code is available from https://github.com/mono/mono-tools/tree/master/asn1view

您可能只需要通用/ prettyPrinter.cs 和的普通/ ASN1De coder.cs ，除非你想为OID的pretty的名字。

You likely need only common/PrettyPrinter.cs and common/ASN1Decoder.cs unless you want pretty names for OIDs.

修改：以上是有点低级别比X.509证书 - 但它会为X.509 CRL，你知道（或没有），可以被嵌入到其他结构证书/ CRL。

EDIT: The above is a bit lower-level than X.509 certificates - but it will work for X.509 CRL and other structures you know (or not) that can be embedded into the certificates/crl.