void getAttributes(Asn1Reader asn)
{
asn.MoveNext();
if (asn.PayloadLength == 0)
{
return;
}
do
{
X509Attribute attribute = X509Attribute.Decode(asn.GetTagRawData());
if (attribute.Oid.Value == X509ExtensionOid.CertificateExtensions)
{
//Extensions
var extensions = new X509ExtensionCollection();
extensions.Decode(attribute.RawData);
foreach (X509Extension extension in extensions)
{
_extensions.Add(extension);
}
}
else
{
_attributes.Add(attribute);
}
} while (asn.MoveNextCurrentLevel());
}
void decodePkcs7()
{
ExternalData = new PKCS7SignedMessage(RawData);
Version = ((X509CertificateRequest[])ExternalData.Content)[0].Version;
SubjectDn = ((X509CertificateRequest[])ExternalData.Content)[0].SubjectDn;
PublicKey = ((X509CertificateRequest[])ExternalData.Content)[0].PublicKey;
SignatureIsValid = ((X509CertificateRequest[])ExternalData.Content)[0].SignatureIsValid;
SignatureAlgorithm = ((X509CertificateRequest[])ExternalData.Content)[0].SignatureAlgorithm;
foreach (X509Attribute attrib in ((X509CertificateRequest[])ExternalData.Content)[0].Attributes)
{
_attribs.Add(attrib);
}
foreach (X509Extension ext in ((X509CertificateRequest[])ExternalData.Content)[0].Extensions)
{
exts.Add(ext);
}
}
void decodeUnauthAttr(Wincrypt.CRYPT_ATTRIBUTES unauthAttrs)
{
if (unauthAttrs.cAttr == 0)
{
return;
}
IntPtr rgValue = unauthAttrs.rgAttr;
Int32 size = Marshal.SizeOf(typeof(Wincrypt.CRYPT_ATTRIBUTE));
UnauthenticatedAttributes = new X509AttributeCollection();
for (Int32 index = 0; index < unauthAttrs.cAttr; index++)
{
Wincrypt.CRYPT_ATTRIBUTE attr = (Wincrypt.CRYPT_ATTRIBUTE)Marshal.PtrToStructure(rgValue, typeof(Wincrypt.CRYPT_ATTRIBUTE));
UnauthenticatedAttributes.Add(new X509Attribute(attr));
rgValue += size;
}
}
void get_ctlentries()
{
if (CTLInfo.cCTLEntry > 0)
{
Entries = new X509CTLEntryCollection();
IntPtr rgCTLEntry = CTLInfo.rgCTLEntry;
for (Int32 index = 0; index < CTLInfo.cCTLEntry; index++)
{
StringBuilder SB = new StringBuilder();
X509AttributeCollection attributes = new X509AttributeCollection();
Wincrypt.CTL_ENTRY CTLEntry = (Wincrypt.CTL_ENTRY)Marshal.PtrToStructure(rgCTLEntry, typeof(Wincrypt.CTL_ENTRY));
byte[] bytes = new Byte[CTLEntry.SubjectIdentifier.cbData];
Marshal.Copy(CTLEntry.SubjectIdentifier.pbData, bytes, 0, bytes.Length);
foreach (Byte item in bytes)
{
SB.Append($"{item:X2}");
}
String thumbprint = SB.ToString();
if (CTLEntry.cAttribute > 0)
{
IntPtr rgAttribute = CTLEntry.rgAttribute;
for (Int32 indexx = 0; indexx < CTLEntry.cAttribute; indexx++)
{
Wincrypt.CRYPT_ATTRIBUTE attrib = (Wincrypt.CRYPT_ATTRIBUTE)Marshal.PtrToStructure(rgAttribute, typeof(Wincrypt.CRYPT_ATTRIBUTE));
Oid pszOid = new Oid(attrib.pszObjId);
Wincrypt.CRYPTOAPI_BLOB blob = (Wincrypt.CRYPTOAPI_BLOB)Marshal.PtrToStructure(attrib.rgValue, typeof(Wincrypt.CRYPTOAPI_BLOB));
bytes = new Byte[blob.cbData];
Marshal.Copy(blob.pbData, bytes, 0, bytes.Length);
attributes.Add(new X509Attribute(pszOid, bytes));
rgAttribute = (IntPtr)((UInt64)rgAttribute + (UInt32)Marshal.SizeOf(typeof(Wincrypt.CRYPT_ATTRIBUTE)));
}
}
Entries.Add(new X509CTLEntry(thumbprint, attributes));
rgCTLEntry = (IntPtr)((UInt64)rgCTLEntry + (UInt32)Marshal.SizeOf(typeof(Wincrypt.CTL_ENTRY)));
}
}
}
