/// <summary>
/// Encrypts the content key to certificate.
/// </summary>
/// <param name="cert">The cert.</param>
/// <param name="contentKey">The content key.</param>
/// <returns>The encrypted content key.</returns>
public static byte[] EncryptContentKeyToCertificate(X509Certificate2 cert, byte[] contentKey)
{
byte[] returnValue = null;
if (cert == null)
{
throw new ArgumentNullException("cert");
}
if (contentKey == null)
{
throw new ArgumentNullException("contentKey");
}
if (contentKey.Length != EncryptionUtils.KeySizeInBytesForAes128)
{
throw new ArgumentOutOfRangeException("contentKey", "Common Encryption content keys are 128-bits (16 bytes) in length.");
}
using (AesCryptoServiceProvider key = new AesCryptoServiceProvider())
{
key.Key = contentKey;
returnValue = EncryptionUtils.EncryptSymmetricKey(cert, key);
}
return(returnValue);
}
/// <summary>
/// Encrypts the content key to certificate.
/// </summary>
/// <param name="certToUse">The cert to use.</param>
/// <returns>The encrypted content key.</returns>
public byte[] EncryptContentKeyToCertificate(X509Certificate2 certToUse)
{
return(EncryptionUtils.EncryptSymmetricKey(certToUse, this._key));
}