/// <summary>
/// Create and initialize structure from RSAParameters
/// </summary>
/// <returns>Initialized structure</returns>
public static RSAPubKey FromRSAParameters(RSAParameters @params, bool includePrivateParameters)
{
var rsaPubKey = new RSAPubKey
{
Magic = (uint)(includePrivateParameters ? 0x32415352 : 0x31415352),
BitLength = (uint)(@params.N.Length << 3),
};
var bytes = new byte[sizeof(uint)];
bytes[sizeof(uint) - 1] = 0;
for (int i = 0; i < @params.E.Length; i++)
{
bytes[i] = @params.E[@params.E.Length - i - 1];
}
rsaPubKey.PublicExponent = BitConverter.ToUInt32(bytes, 0);
return(rsaPubKey);
}
/// <summary>
/// Create and initialize structure from binary data
/// </summary>
/// <exception cref="CryptographicException">On validate errors</exception>
/// <returns>Initialized structure</returns>
public static RSAPubKey FromBinary(BinaryReader reader)
{
var rsaPubKey = new RSAPubKey
{
Magic = reader.ReadUInt32(),
BitLength = reader.ReadUInt32(),
PublicExponent = reader.ReadUInt32()
};
// Validate
if (rsaPubKey.Magic != 0x31415352 && rsaPubKey.Magic != 0x32415352)
{
throw new CryptographicException(string.Format("Invalid magic number [0x{0:X4}] in RSAPubKey",
rsaPubKey.Magic));
}
if (rsaPubKey.BitLength % 8 != 0)
{
throw new CryptographicException(string.Format("Invalid # of bits in modulus [{0}] in RSAPubKey",
rsaPubKey.BitLength));
}
return(rsaPubKey);
}
/// <summary>
/// Create and initialize structure from RSAParameters
/// </summary>
/// <returns>Initialized structure</returns>
public static RSAPubKey FromRSAParameters(RSAParameters @params, bool includePrivateParameters)
{
var rsaPubKey = new RSAPubKey
{
Magic = (uint)(includePrivateParameters ? 0x32415352 : 0x31415352),
BitLength = (uint)(@params.N.Length << 3),
};
var bytes = new byte[sizeof(uint)];
bytes[sizeof(uint) - 1] = 0;
for (int i = 0; i < @params.E.Length; i++)
{
bytes[i] = @params.E[@params.E.Length - i - 1];
}
rsaPubKey.PublicExponent = BitConverter.ToUInt32(bytes, 0);
return rsaPubKey;
}
/// <summary>
/// Create and initialize structure from binary data
/// </summary>
/// <exception cref="CryptographicException">On validate errors</exception>
/// <returns>Initialized structure</returns>
public static RSAPubKey FromBinary(BinaryReader reader)
{
var rsaPubKey = new RSAPubKey
{
Magic = reader.ReadUInt32(),
BitLength = reader.ReadUInt32(),
PublicExponent = reader.ReadUInt32()
};
// Validate
if (rsaPubKey.Magic != 0x31415352 && rsaPubKey.Magic != 0x32415352)
throw new CryptographicException(string.Format("Invalid magic number [0x{0:X4}] in RSAPubKey",
rsaPubKey.Magic));
if (rsaPubKey.BitLength % 8 != 0)
throw new CryptographicException(string.Format("Invalid # of bits in modulus [{0}] in RSAPubKey",
rsaPubKey.BitLength));
return rsaPubKey;
}