| public abstract ToXmlString ( bool includePrivateParameters ) : string | ||
| includePrivateParameters | bool | |
| return | string | |
public static byte[] GetSecretKey(EncryptedKey encryptedKey, AsymmetricAlgorithm privateKey)
{
var keyAlgorithm = encryptedKey.EncryptionMethod.KeyAlgorithm;
var asymmetricAlgorithm = GetAsymmetricKeyTransportAlgorithm(keyAlgorithm);
asymmetricAlgorithm.FromXmlString(privateKey.ToXmlString(true));
var useOaep = keyAlgorithm == EncryptedXml.XmlEncRSAOAEPUrl;
return asymmetricAlgorithm.Decrypt(encryptedKey.CipherData.CipherValue, useOaep);
}
/// <summary>
/// 为非对称加密生成密钥对，并存储到文件
/// </summary>
/// <param name="asymmetricAlgorithm"></param>
/// <param name="fileName"></param>
/// <param name="isPrivate"></param>
public static void CreateKeyFileForAsymmetricAlgorithm(AsymmetricAlgorithm asymmetricAlgorithm, string fileName, bool isPrivate)
{
if (string.IsNullOrEmpty(fileName)) throw new ArgumentNullException("fileName");
string content = asymmetricAlgorithm.ToXmlString(isPrivate);
File.WriteAllText(fileName, Convert.ToBase64String(Encoding.UTF8.GetBytes(content)));
}
private bool CompareAsymmetricAlgorithm (AsymmetricAlgorithm a1, AsymmetricAlgorithm a2)
{
// fast path
if (a1.KeySize != a2.KeySize)
return false;
// compare public keys - if they match we can assume the private match too
return (a1.ToXmlString (false) == a2.ToXmlString (false));
}
