/// <summary>
/// Decodes ASN.1-encoded byte array that represents a collection of <see cref="X509Extension"/> objects.
/// </summary>
/// <param name="extensions">Destination collection where decoded extensions will be added.</param>
/// <param name="rawData">ASN.1-encoded byte array that represents extension collection.</param>
/// <exception cref="Asn1InvalidTagException">Decoder encountered an unexpected ASN.1 type identifier.</exception>
/// <exception cref="ArgumentNullException">
/// <strong>extensions</strong> and/or <strong>rawData</strong> parameter is null.
/// </exception>
/// <remarks>If current collection contains items, decoded items will be appended to existing items.</remarks>
public static void Decode(this X509ExtensionCollection extensions, Byte[] rawData)
{
if (extensions == null)
{
throw new ArgumentNullException(nameof(extensions));
}
if (rawData == null)
{
throw new ArgumentNullException(nameof(rawData));
}
Asn1Reader asn = new Asn1Reader(rawData);
if (asn.Tag != 48)
{
throw new Asn1InvalidTagException();
}
if (!asn.MoveNext() || asn.NextOffset == 0)
{
return;
}
do
{
extensions.Add(X509ExtensionExtensions.Decode(asn.GetTagRawData()));
} while (asn.MoveNextCurrentLevel());
}
/// <summary>
/// Decodes ASN.1-encoded byte array that represents a collection of <see cref="X509Extension"/> objects.
/// </summary>
/// <param name="extensions">Destination collection where decoded extensions will be added.</param>
/// <param name="asn">ASN.1 reader which points to the beginning of the extenstion collection structure.</param>
/// <exception cref="Asn1InvalidTagException">Decoder encountered an unexpected ASN.1 type identifier.</exception>
/// <exception cref="ArgumentNullException">
/// <strong>extensions</strong> and/or <strong>asn</strong> parameter is null.
/// </exception>
/// <remarks> If current collection contains items, decoded items will be appended to existing items.</remarks>
public static void Decode(this X509ExtensionCollection extensions, Asn1Reader asn)
{
if (extensions == null)
{
throw new ArgumentNullException(nameof(extensions));
}
if (asn == null)
{
throw new ArgumentNullException(nameof(asn));
}
Int32 offset = asn.Offset;
if (!asn.MoveNext() || asn.PayloadLength == 0)
{
return;
}
do
{
extensions.Add(X509ExtensionExtensions.Decode(asn));
} while (asn.MoveNextSibling());
asn.Seek(offset);
}
