public override ICryptoTransform CreateEncryptor(byte[] key, byte[] iv)
{
Contract.Ensures(Contract.Result <ICryptoTransform>() != null);
if (key == null)
{
throw new ArgumentNullException("key");
}
if (!ValidKeySize(key.Length * 8))
{
throw new ArgumentException(SR.GetString(SR.Cryptography_InvalidKeySize), "key");
}
if (iv != null && iv.Length * 8 != BlockSizeValue)
{
throw new ArgumentException(SR.GetString(SR.Cryptography_InvalidIVSize), "iv");
}
byte[] keyCopy = (byte[])key.Clone();
byte[] ivCopy = null;
if (iv != null)
{
ivCopy = (byte[])iv.Clone();
}
using (SafeCapiKeyHandle importedKey = CapiNative.ImportSymmetricKey(m_cspHandle, GetAlgorithmId(keyCopy.Length * 8), keyCopy)) {
return(CreateEncryptor(importedKey, ivCopy));
}
}
public override ICryptoTransform CreateEncryptor(byte[] key, byte[] iv)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (!base.ValidKeySize(key.Length * 8))
{
throw new ArgumentException(System.SR.GetString("Cryptography_InvalidKeySize"), "key");
}
if ((iv != null) && ((iv.Length * 8) != base.BlockSizeValue))
{
throw new ArgumentException(System.SR.GetString("Cryptography_InvalidIVSize"), "iv");
}
byte[] buffer = (byte[])key.Clone();
byte[] buffer2 = null;
if (iv != null)
{
buffer2 = (byte[])iv.Clone();
}
using (SafeCapiKeyHandle handle = CapiNative.ImportSymmetricKey(this.m_cspHandle, GetAlgorithmId(buffer.Length * 8), buffer))
{
return(this.CreateEncryptor(handle, buffer2));
}
}
