How do I get certificate's key size

Question

我有一个X.509证书，需要获得其密钥的大小（以位为单位） - 例如，1024 2048等。我已经查看了X509Certificate2以及bouncycastle X509Certificate类，但看不到如何获得密钥大小。

Answer 1

You surely have access to the public key. The key length is public key's size: this.PublicKey.Key.KeySize;
To see an implemented solution, check out this article on MSDN