public static byte[] Signature(string data, DSAKey key, Encoding encoding = null)
{
if (encoding == null)
{
encoding = Encoding.UTF8;
}
return(Signature(encoding.GetBytes(data), key));
}
public static bool Verify(byte[] buffer, DSAKey key, byte[] rgbSignature)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
return(Verify(buffer, key.PublicKey, rgbSignature));
}
public static byte[] Signature(byte[] buffer, DSAKey key)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
return(Signature(buffer, key.PrivateKey));
}
public static DSAKey CreateKey(int keySize = 1024)
{
using (var provider = new DSACryptoServiceProvider(keySize)) {
var key = new DSAKey();
var pa = provider.ExportParameters(true);
key.PrivateKey = provider.ToXmlString(true);
key.PublicKey = provider.ToXmlString(false);
return(key);
}
}
/// <summary>
/// Create a new <see cref="DSAKey"/>
/// </summary>
/// <param name="keySize"></param>
/// <returns></returns>
public static DSAKey CreateKey(int keySize = 1024)
{
using var provider = new DSACryptoServiceProvider(keySize);
var key = new DSAKey
{
PrivateKey = provider.ToXmlString(true),
PublicKey = provider.ToXmlString(false)
};
return(key);
}
/// <summary>
/// Signature
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <param name="encoding"></param>
/// <returns></returns>
public static byte[] Signature(string data, DSAKey key, Encoding encoding = null)
{
return(Signature(encoding.SafeValue().GetBytes(data), key));
}
/// <summary>
/// Signature
/// </summary>
/// <param name="buffer"></param>
/// <param name="key"></param>
/// <returns></returns>
public static byte[] Signature(byte[] buffer, DSAKey key)
{
Checker.Key(key);
return(Signature(buffer, key.PrivateKey));
}
/// <summary>
/// Verify
/// </summary>
/// <param name="buffer"></param>
/// <param name="key"></param>
/// <param name="rgbSignature"></param>
/// <returns></returns>
public static bool Verify(byte[] buffer, DSAKey key, byte[] rgbSignature)
{
Checker.Key(key);
return(Verify(buffer, key.PublicKey, rgbSignature));
}