internal static byte[] EncryptMessage(
SecHandle context,
SecurityQualityOfProtectionFlags flags,
IEnumerable <SecurityBuffer> messages,
int sequence_no)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
if (messages is null)
{
throw new ArgumentNullException(nameof(messages));
}
List <SecurityBuffer> sig_buffers = new List <SecurityBuffer>(messages);
var sizes = QueryContextAttribute <SecPkgContext_Sizes>(context, SECPKG_ATTR.SIZES);
var out_sig_buffer = new SecurityBufferOut(SecurityBufferType.Token, sizes.cbSecurityTrailer);
sig_buffers.Add(out_sig_buffer);
using (var list = new DisposableList())
{
var buffers = sig_buffers.ToBufferList(list);
var desc = buffers.ToDesc(list);
SecurityNativeMethods.EncryptMessage(context, flags, desc, sequence_no).CheckResult();
sig_buffers.UpdateBuffers(desc);
return(out_sig_buffer.ToArray());
}
}
internal static EncryptedMessage EncryptMessage(
SecHandle context,
SecurityQualityOfProtectionFlags flags,
byte[] message,
int sequence_no)
{
if (message is null)
{
throw new ArgumentNullException(nameof(message));
}
SecurityBuffer buffer = new SecurityBufferInOut(SecurityBufferType.Data, message);
var signature = EncryptMessage(context, flags, new[] { buffer }, sequence_no);
return(new EncryptedMessage(buffer.ToArray(), signature));
}
internal static byte[] EncryptMessage(
SecHandle context,
SecurityQualityOfProtectionFlags flags,
IEnumerable <SecurityBuffer> messages,
int sequence_no)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
if (messages is null)
{
throw new ArgumentNullException(nameof(messages));
}
List <SecurityBuffer> sig_buffers = new List <SecurityBuffer>(messages);
var out_sig_buffer = new SecurityBufferOut(SecurityBufferType.Token, GetSecurityTrailerSize(context));
sig_buffers.Add(out_sig_buffer);
EncryptMessageNoSignature(context, flags, sig_buffers, sequence_no);
return(out_sig_buffer.ToArray());
}
internal static void EncryptMessageNoSignature(
SecHandle context,
SecurityQualityOfProtectionFlags flags,
IEnumerable <SecurityBuffer> messages,
int sequence_no)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
if (messages is null)
{
throw new ArgumentNullException(nameof(messages));
}
using (var list = new DisposableList())
{
var buffers = messages.ToBufferList(list);
var desc = buffers.ToDesc(list);
SecurityNativeMethods.EncryptMessage(context, flags, desc, sequence_no).CheckResult();
messages.UpdateBuffers(desc);
}
}
internal static extern SecStatusCode DecryptMessage(
[In] SecHandle phContext,
SecBufferDesc pMessage,
int MessageSeqNo,
out SecurityQualityOfProtectionFlags pfQOP
);
/// <summary>
/// Encrypt a message for this context with no specific signature.
/// </summary>
/// <param name="messages">The messages to encrypt.</param>
/// <param name="quality_of_protection">Quality of protection flags.</param>
/// <param name="sequence_no">The sequence number.</param>
/// <remarks>The messages are encrypted in place. You can add buffers with the ReadOnly flag to prevent them being encrypted.
/// If you need to return a signature then it must be specified in a buffer.</remarks>
public void EncryptMessageNoSignature(IEnumerable <SecurityBuffer> messages, SecurityQualityOfProtectionFlags quality_of_protection, int sequence_no)
{
SecurityContextUtils.EncryptMessage(Context, quality_of_protection, messages, sequence_no);
}
/// <summary>
/// Encrypt a message for this context.
/// </summary>
/// <param name="messages">The messages to encrypt.</param>
/// <param name="quality_of_protection">Quality of protection flags.</param>
/// <returns>The signature for the messages.</returns>
/// <remarks>The messages are encrypted in place. You can add buffers with the ReadOnly flag to prevent them being encrypted.</remarks>
/// <param name="sequence_no">The sequence number.</param>
public byte[] EncryptMessage(IEnumerable <SecurityBuffer> messages, SecurityQualityOfProtectionFlags quality_of_protection, int sequence_no)
{
return(SecurityContextUtils.EncryptMessage(Context, quality_of_protection, messages, sequence_no));
}
/// <summary>
/// Encrypt a message for this context.
/// </summary>
/// <param name="message">The message to encrypt.</param>
/// <param name="quality_of_protection">Quality of protection flags.</param>
/// <returns>The encrypted message.</returns>
/// <param name="sequence_no">The sequence number.</param>
public EncryptedMessage EncryptMessage(byte[] message, SecurityQualityOfProtectionFlags quality_of_protection, int sequence_no)
{
return(SecurityContextUtils.EncryptMessage(Context, quality_of_protection, message, sequence_no));
}
