/// <summary>
/// Decrypts the provided message using the public key associated with my DID.
/// </summary>
/// <remarks>
/// <para>
/// The DID specified in the <paramref name="myDid"/> parameter must have been previously created
/// with a secret key and stored in the wallet specified in the <paramref name="wallet"/> parameter.
/// </para>
/// <para>
/// For further information on storing a DID and its secret key see the
/// <see cref="CreateAndStoreMyDidAsync(Wallet, string)"/> method.
/// </para>
/// </remarks>
/// <param name="wallet">The wallet containing the DID and associated secret key to use for decryption.</param>
/// <param name="myDid">The DID to use for decryption.</param>
/// <param name="did">The DID of the encrypting party to use for verification.</param>
/// <param name="encryptedMsg">The message to decrypt.</param>
/// <param name="nonce">The nonce used to encrypt the message.</param>
/// <returns>An asynchronous <see cref="Task{T}"/> that resolves to a byte array containing the decrypted message.</returns>
public static Task <byte[]> DecryptAsync(Wallet wallet, string myDid, string did, byte[] encryptedMsg, byte[] nonce)
{
ParamGuard.NotNull(wallet, "wallet");
ParamGuard.NotNullOrWhiteSpace(myDid, "myDid");
ParamGuard.NotNullOrWhiteSpace(did, "did");
ParamGuard.NotNull(encryptedMsg, "encryptedMsg");
ParamGuard.NotNull(nonce, "nonce");
var taskCompletionSource = new TaskCompletionSource <byte[]>();
var commandHandle = PendingCommands.Add(taskCompletionSource);
var commandResult = IndyNativeMethods.indy_decrypt(
commandHandle,
wallet.Handle,
myDid,
did,
encryptedMsg,
encryptedMsg.Length,
nonce,
nonce.Length,
_decryptCallback
);
CallbackHelper.CheckResult(commandResult);
return(taskCompletionSource.Task);
}
/// <summary>
/// Decrypts the specified messaage.
/// </summary>
/// <param name="wallet">The wallet containing the DID to use for decrpytion.</param>
/// <param name="my_did">My DID.</param>
/// <param name="did">The DID</param>
/// <param name="encryptedMsg">The message to decrypt.</param>
/// <param name="nonce">The nonce.</param>
/// <returns>An asynchronous task that returns the decrypted message.</returns>
public static Task <byte[]> DecryptAsync(Wallet wallet, string my_did, string did, byte[] encryptedMsg, byte[] nonce)
{
var taskCompletionSource = new TaskCompletionSource <byte[]>();
var commandHandle = AddTaskCompletionSource(taskCompletionSource);
var commandResult = IndyNativeMethods.indy_decrypt(
commandHandle,
wallet.Handle,
my_did,
did,
encryptedMsg,
encryptedMsg.Length,
nonce,
nonce.Length,
_decryptCallback
);
CheckResult(commandResult);
return(taskCompletionSource.Task);
}
