/// <summary>
/// RSA encryption
/// SHA256 hash algorithm to use the key length of at least 2048
/// </summary>
/// <param name="encoding">Data coding</param>
/// <param name="keySize">Key length in bits:</param>
/// <param name="privateKey">private Key</param>
/// <param name="publicKey">public Key</param>
public RsaXmlUtil(Encoding encoding, string publicKey, string privateKey = null, int keySize = 2048)
{
if (string.IsNullOrEmpty(privateKey) && string.IsNullOrEmpty(publicKey))
{
throw new ArgumentException("Public and private keys must not be empty at the same time");
}
if (!string.IsNullOrEmpty(privateKey))
{
#if NET451 || NET452
PrivateRsa = new MsRSA {
KeySize = keySize
};
#else
PrivateRsa = MsRSA.Create();
PrivateRsa.KeySize = keySize;
#endif
PrivateRsa.ImportKeyInLvccXml(privateKey);
}
if (!string.IsNullOrEmpty(publicKey))
{
#if NET451 || NET452
PublicRsa = new MsRSA {
KeySize = keySize
};
#else
PublicRsa = MsRSA.Create();
PublicRsa.KeySize = keySize;
#endif
PublicRsa.ImportKeyInLvccXml(publicKey);
}
DataEncoding = encoding.SafeEncodingValue();
}
public static MsRSA CreateProvider()
{
#if NET451 || NET452
return(new MsRSA());
#else
return(MsRSA.Create());
#endif
}
/// <summary>
/// RSAPkcs8Util
/// </summary>
/// <param name="dataEncoding"></param>
/// <param name="publicKey"></param>
/// <param name="privateKey"></param>
/// <param name="keySize"></param>
public RsaPkcs8Util(Encoding dataEncoding, string publicKey, string privateKey = null, int keySize = 2048)
{
if (string.IsNullOrEmpty(privateKey) && string.IsNullOrEmpty(publicKey))
{
throw new Exception("Public and private keys must not be empty at the same time");
}
if (!string.IsNullOrEmpty(privateKey))
{
#if NET451 || NET452
PrivateRsa = new MsRSA {
KeySize = keySize
};
#else
PrivateRsa = MsRSA.Create();
PrivateRsa.KeySize = keySize;
#endif
PrivateRsa.TouchFromPrivateKeyInPkcs8(privateKey, out var priRsap);
#if NET451 || NET452
PrivateRsaKeyParameter = GetPrivateKeyParameter(privateKey);
#endif
if (string.IsNullOrEmpty(publicKey))
{
#if NET451 || NET452
PublicRsa = new MsRSA {
KeySize = keySize
};
#else
PublicRsa = MsRSA.Create();
PublicRsa.KeySize = keySize;
#endif
var pubRsap = new RSAParameters
{
Modulus = priRsap.Modulus,
Exponent = priRsap.Exponent
};
PublicRsa.ImportParameters(pubRsap);
#if NET451 || NET452
PublicRsaKeyParameter = GetPublicKeyParameter(publicKey);
#endif
}
}
if (!string.IsNullOrEmpty(publicKey))
{
#if NET451 || NET452
PublicRsa = new MsRSA {
KeySize = keySize
};
#else
PublicRsa = MsRSA.Create();
PublicRsa.KeySize = keySize;
#endif
PublicRsa.TouchFromPublicKeyInPkcs8(publicKey, out _);
#if NET451 || NET452
PublicRsaKeyParameter = GetPublicKeyParameter(publicKey);
#endif
}
DataEncoding = dataEncoding.SafeEncodingValue();
}
