相关疑难解决方法(0)

我使用RSACryptoServiceProvider加密了一个文本.我导出了公钥和私钥.显然我只是想在解码器应用程序中公开公钥,所以我编写了如下代码:

private const string PublicKey = "<RSAKeyValue><Modulus>sIzQmj4vqK0QPd7RXKigD7Oi4GKPwvIPoiUyiKJMGP0qcbUkRPioe2psE/d3c1a2NY9oj4Da2y1qetjvKKFad2QAhXuql/gPIb1WmI+f6q555GClvHWEjrJrD/ho7SLoHbWd6oY6fY609N28lWJUYO97RLVaeg2jfNAUSu5bGC8=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";

private string Decrypt()
        {
            byte[] encryptedKeyAsBytes = Convert.FromBase64String(_encryptedKey);
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(PublicKey);
            // read ciphertext, decrypt it to plaintext
            byte[] plainBytes = rsa.Decrypt(encryptedKeyAsBytes, false);
            string plainText = System.Text.Encoding.ASCII.GetString(plainBytes);

            return plainText;
        }

但是在"byte [] plainBytes = rsa.Decrypt(encryptedKeyAsBytes,false);"行引发异常; 并说"钥匙不存在".但是,如果我暴露整个私钥和公钥,那么它会很愉快地运行.那么如何仅使用公钥信息解密数据呢？