private byte[] EncodeKeyExchangeInternal(Gost_28147_89_SymmetricAlgorithm keyExchangeAlgorithm, int keyExchangeExportAlgId)
{
Gost_28147_89_KeyExchangeInfo keyExchangeInfo;
SafeKeyHandleImpl keyExchangeHandle = null;
try
{
var importedKeyBytes = CryptoApiHelper.EncodePublicBlob(_keyExchangeParameters, _keySize, _signatureAlgId);
CryptoApiHelper.ImportCspBlob(importedKeyBytes, _provHandle, _keyHandle, out keyExchangeHandle);
CryptoApiHelper.SetKeyExchangeExportAlgId(ProviderType, keyExchangeHandle, keyExchangeExportAlgId);
var symKeyHandle = keyExchangeAlgorithm.GetSafeHandle();
keyExchangeInfo = CryptoApiHelper.ExportKeyExchange(symKeyHandle, keyExchangeHandle);
}
finally
{
keyExchangeHandle.TryDispose();
}
return(keyExchangeInfo.Encode());
}
private void InitDefaults(Gost_28147_89_SymmetricAlgorithm keyAlgorithm)
{
HashName = typeof(THash).Name;
_keyAlgorithm = keyAlgorithm;
_hmacHandle = CreateHashHMAC(keyAlgorithm.ProviderType, CryptoApiHelper.GetProviderHandle(keyAlgorithm.ProviderType), keyAlgorithm.GetSafeHandle());
}
public override void Initialize()
{
var hmacHandle = CreateHashHMAC(ProviderType, CryptoApiHelper.GetProviderHandle(ProviderType), _keyAlgorithm.GetSafeHandle());
_hmacHandle.TryDispose();
_hmacHandle = hmacHandle;
}
