/// <summary>
/// Encrypts and signs the specified buffer with data for current enumeration of <see cref="VirgilCard"/> recipients.
/// </summary>
/// <param name="task">The list of <see cref="VirgilCard"/> recipients.</param>
/// <param name="buffer">The buffer data to be encrypted.</param>
/// <param name="key">The signer's <see cref="VirgilKey"/></param>
/// <returns>A new <see cref="VirgilBuffer"/> with encrypted data.</returns>
/// <exception cref="ArgumentNullException"></exception>
public static Task <VirgilBuffer> SignThenEncrypt(this Task <IEnumerable <VirgilCard> > task, VirgilBuffer buffer, VirgilKey key)
{
return(task.ContinueWith(t =>
{
if (t.Exception == null && !t.Result.Any())
{
throw new RecipientsNotFoundException();
}
return key.SignThenEncrypt(buffer, t.Result);
}));
}
/// <summary>
/// Encrypts the specified data for current <see cref="VirgilCard" /> recipient.
/// </summary>
/// <param name="task">The <see cref="VirgilCard" /> recipient</param>
/// <param name="buffer">The buffer with data to be encrypted.</param>
/// <param name="key">The signer's key.</param>
/// <returns>
/// A new <see cref="VirgilBuffer" /> with encrypted data.
/// </returns>
/// <exception cref="ArgumentNullException"></exception>
public static Task <VirgilBuffer> SignThenEncrypt(this Task <VirgilCard> task, VirgilBuffer buffer, VirgilKey key)
{
return(task.ContinueWith(t => key.SignThenEncrypt(buffer, new[] { t.Result })));
}
/// <summary>
/// Signs the plaintext using current <see cref="VirgilKey"/> and then encrypt it
/// using recipient's <see cref="VirgilCard"/>.
/// </summary>
/// <param name="virgilKey">The <see cref="VirgilKey"/> used to sign the <paramref name="plaintext"/>.</param>
/// <param name="plaintext">The plaintext to be encrypted.</param>
/// <param name="recipient">The recipient's <see cref="VirgilCard"/> used to
/// encrypt the <paramref name="plaintext"/>.</param>
/// <returns>A new <see cref="VirgilBuffer"/> instance with encrypted data.</returns>
public static VirgilBuffer SignThenEncrypt(this VirgilKey virgilKey, string plaintext, VirgilCard recipient)
{
return(virgilKey.SignThenEncrypt(VirgilBuffer.From(plaintext), new [] { recipient }));
}
/// <summary>
/// Signs a byte array data using current <see cref="VirgilKey"/> and then encrypt it
/// using recipient's <see cref="VirgilCard"/>.
/// </summary>
/// <param name="virgilKey">The <see cref="VirgilKey"/> used to sign the <paramref name="data"/>.</param>
/// <param name="data">The plaintext to be encrypted.</param>
/// <param name="recipient">The recipient's <see cref="VirgilCard"/> used to
/// encrypt the <paramref name="data"/>.</param>
/// <returns>A new <see cref="VirgilBuffer"/> instance with encrypted data.</returns>
public static VirgilBuffer SignThenEncrypt(this VirgilKey virgilKey, byte[] data, VirgilCard recipient)
{
return(virgilKey.SignThenEncrypt(VirgilBuffer.From(data), new[] { recipient }));
}
/// <summary>
/// Signs a plaintext using current <see cref="VirgilKey"/> and then encrypt it
/// using multiple recipient's <see cref="VirgilCard"/>s.
/// </summary>
/// <param name="virgilKey">The <see cref="VirgilKey"/> used to sign the <paramref name="plaintext"/>.</param>
/// <param name="plaintext">The plaintext to be encrypted.</param>
/// <param name="recipients">A list of recipient's <see cref="VirgilCard"/>s used to
/// encrypt the <paramref name="plaintext"/>.</param>
/// <returns>A new <see cref="VirgilBuffer"/> instance with encrypted data.</returns>
public static VirgilBuffer SignThenEncrypt(this VirgilKey virgilKey, string plaintext, IEnumerable <VirgilCard> recipients)
{
return(virgilKey.SignThenEncrypt(VirgilBuffer.From(plaintext), recipients));
}
/// <summary>
/// Signs a byte array data using current <see cref="VirgilKey"/> and then encrypt it
/// using multiple recipient's <see cref="VirgilCard"/>s.
/// </summary>
/// <param name="virgilKey">The <see cref="VirgilKey"/> used to sign the <paramref name="data"/>.</param>
/// <param name="data">The data to be encrypted.</param>
/// <param name="recipients">A list of recipient's <see cref="VirgilCard"/>s used to
/// encrypt the <paramref name="data"/>.</param>
/// <returns>A new <see cref="VirgilBuffer"/> instance with encrypted data.</returns>
public static VirgilBuffer SignThenEncrypt(this VirgilKey virgilKey, byte[] data, IEnumerable <VirgilCard> recipients)
{
return(virgilKey.SignThenEncrypt(VirgilBuffer.From(data), recipients));
}